DEFINITIONS
The following Definitions Apply to all of the following RULES, REGULATIONS and SPECIFICATIONS.
Original Equipment Manufacturer or O.E.M.:
Original Equipment Manufacturer (OEM) is defined as engines and other components originally produced by an American Manufacturer for passenger car or light truck use, as produced on an assembly line and unaltered or modified. Special racing equipment. marine or off-road vehicle components are not considered OEM. All components are subject to approval by inspecting track officials.
Furthermore, OEM is interpreted to mean OEM for stock production engines and manufacturer’s forging and casting marks cannot be removed or altered.
STOCK
Stock is defined as any component originally produced and available for particular manufacturer’s year, make, and model of car or light truck.
Preliminary Inspection of Vehicles:
Prior to racing all vehicles will be inspected by an OSP Inspector. The purpose of this preliminary inspection is to insure general compliance with these rules and specifications. It is not a guarantee or a decision by OSP that the inspected vehicle is in compliance with all rules and regulations and specifications herein. The OSP does not have time to conduct a thorough inspection of every component on each car. It is the car owner’s and car driver’s duty to be in compliance with all applicable rules, regulations, and specifications. If you have any questions concerning a specific rule, regulation, or specification, ask the appropriate track official, inspector or track director.
Approval of a vehicle by an OSP inspector is not a guarantee that the inspected vehicle is mechanically sound. The OSP inspector shall not be liable, nor shall OSP, for any mechanical failure nor for the losses or injuries resulting from the same.
It is the driver’s and or car owner’s responsibility to know these rules, regulations, and specifications and to know that their car is in compliance therewith, these rules, regulations, and specifications were prepared in a positive manner.
If it doesn’t say you can do it, YOU CAN NOT DO IT!!!!
ROUGH DRIVING (back to top)
A strict definition of ROUGH DRIVING is not a simple thing. However, there are a couple of specific things that will rate you a black flag at Oklahoma Sports Park. We won’t put up with a driver using a front bumper for brakes. That is when you go in the corner, and maybe you can get in a little deeper than the guy in front of you. He backs off, you don’t, and you give him a little nudge: If you turn him around you will be Black Flagged!!!!! You also don’t turn right on a guy when you are inside of him, and you don’t pinch him off when you are on the outside of him. YOU HAVE TO GIVE A GUY A LANE TO RACE IN!!!!!
SECTION 1 (A)
1.The racing events at the Oklahoma Sports Park, ADA, Oklahoma, are open to all persons complying with these rules, regulations, and specifications and their admission into the racing area signifies their acceptance of and compliance with all provisions YOU MUST RACE A MINIMUM OF 60% OF THE RACES DURING THE SEASON TO BE ELEGIBLE FOR END OF SEASON PRIZES.
2. All driver, car owners and pit persons must be at least sixteen (16) years of age and physically fit, must be 14 years of age for pit crew. THIS RULE IS SUBJECT TO CHANGE ACCORDING TO INSURANCE POLICIES. CHECK WITH TRACK DIRECTOR.
3.All persons entering the pit area must pay a fee, read and acknowledge by signature, a form releasing OSP from any claim for personal injury or damages, or loss of any personal equipment. Anyone entering pits must be All items including tow cars, tools, etc., are brought into competition area at the owners own risk, and ARE NOT COVERED BY TRACK INSURANCE POLICIES, REPEAT, DAMAGES TO TOW CARS SPECIFICALLY NOT COVERED.
4. A pit pass will be issued to all persons entering the pits and shall be worn in plain sight while in the pit area. Car owners and drivers are responsible to insure that all members of their crew have purchased pit passes. Violation of this policy will result in loss of racing privileges for the full season.
5. Any person sustaining injury in the competition area must report the injury to the track official within fifteen (15) minutes after competition of the racing program.
6.Alcoholic beverages shall not be allowed in the pit area, or shall any person be admitted into the pit area who appears to be intoxicated.
DRIVERS, MECHANICS, AND/OR OWNERS VIOLATING THE ALCOHOL RULE WILL BE SUSPENDED FOR ONE CALENDAR YEAR WITH NO APPEAL. DRUG/ALCOHOL TESTING MAY BE DONE AT THE DISCRETION OF THE TRACK DIRECTOR.
All persons will conduct themselves in a professional manner while on the racing premises. Arguments, poor sportsmanship and cursing in front of fans, officials, or participants could result in a fine or suspension to be assessed by the track director or his representative. . Twice suspended is automatic expulsion. The track director on his own or by information furnished in a report from a track official, may levy a penalty upon a person for UN-sportsman like conduct, or any action not in the best interest of the race program. Fighting will result in arrest. DO NOT ARGUE WITH TRACK OFFICIALS. If you have any questions, see the track director.
PROTESTS (back to top)
NOTE: YOU CAN ONLY BE PROTESTED BY ANOTHER RACER TWICE AND IN TURN YOU CAN ONLY PROTEST TWICE IN A RACE SEASON.
All protests must be submitted in writing to the track office within fifteen (15) minutes after completion of the race protested. All protest fees must be paid in cash, no checks will be accepted, and must accompany written protest from driver or owner of a car that participated in the same race with the car protested. Receipts will be issued to the protester by the track office. Protest fee to be given to the track director or the appointed representative. Laboratory fees, and any of the track charges will be deducted from the protest fee. Car must finish on lead lap.
If a car is protested and found legal, i.e., in compliance with the applicable rules, regulations, or specification, the car owner of the protested car will receive protest fee less track fees. If found illegal, the protester gets his money back, less charges.
Protest fees in all divisions, unless otherwise provided herein are:
$200.00 + $25.00 pull one (1) head only. Check basic engine.
$25.00 non refundable. $350.00 + $25.00 Full Protest. $25.00 non refundable.
$75.00 + 25.00 Fuel Test. $25.00 non refundable.
OFFICIAL PROTEST
Any car may be inspected at any time by track official inspections, if no violations of these rules are found, OSP will pay $50.00 tear down fee for major inspections. Any car winning 3 features will be torn down by OSP.
ALL TEAMS REQUIRED TO TEAR DOWN THEIR ENGINE WILL HAVE 45 MINUTES TO REMOVE THE CYLINDER HEADS. TEAMS WILL HAVE 1 HOUR AND 15 MINUTES IF THEY ARE REQUIRED TO REMOVE A ROD AND PISTON. ALL TEAMS SHOULD HAVE THE TOOLS NEEDED TO DO THEIR TEARDOWN. IF YOU CAN NOT TEARDOWN IN THE ALLOTTED TIME YOU WILL BE DISQUALIFIED.
MAJOR INSPECTIONS; PENALTY WILL BE FORFEITURE OF ALL MONEY AND POINTS WON DURING THE RACING PROGRAM PLUS SUSPENSION FOR NEXT TWO CONSECUTIVE RACING PROGRAM AND LOSS OF ALL POINTS ACCUMULATED TO DATE.
MINOR INFRACTIONS; MINOR INFRACTIONS, OTHER THAN WEIGHT, WILL RESULT IN FORFEITURE OF ALL POINTS AND MONEY FOR THE PROGRAM AND UP TO ONE (1) WEEK SUSPENSION. THE DECISION AS TO WHETHER OR NOT A CAR OR DRIVER WILL BE SUSPENDED AND THE LENGTH OF ANY SUSPENSION FOR VIOLATION OF A MINOR INFRACTION WILL BE A THE DISCRETION OF THE TRACK DIRECTOR. HIS DECISION REGARDING THE SEVERITY OF THE PENALTY WILL BE FINAL.
ILLEGAL WEIGHT: Forfeit points and money earned for that race.
SECOND OFFENSE: Any car or driver committing a second major infraction in the same race season may be suspended for up to one calendar year. Such suspensions and their duration will be at the discretion of the track director whose decision will be final.
If the race is canceled for any reason prior to competition of the preliminary events (heat races), all admission receipts are refunded. Consequently, no purse will be paid. If the program is canceled after the preliminary races are completed, all money earned will be paid for the events completed. The balance of the purse and events will be added to a later program or programs decided upon the track director.
It is specifically understood and agreed that all drivers, car owners, and pit persons are free and independent agents, are not employees of Oklahoma Sports Park, track director or any other official.
No competitor shall have any claim against OSP, track director or any other official or representatives or assigns by reasons of disqualification of cars, drivers or rule changes.
The following flag system will be used: (back to top) (more information)
GREEN FLAG: Beginning of race, track is clear.
YELLOW FLAG: Reduce speed, maintain position, do not race under YELLOW FLAG.
YELLOW/GREEN FLAG: Enduro Style: will be stopped only in extreme emergency.
BLACK FLAG: Consultation flag – pull off track immediately.
RED FLAG: Emergency on track, all cars stop immediately, regardless of position on track, then proceed to start/finish line for realignment. Working on cars in designated area permitted, if time allows.
BLUE FLAG with DIAGONAL STRIPE: Passing or move over flag . Cars receiving this flag shall yield the grove so that lapping cars may pass.
WHITE FLAG: One lap remaining in the race.
CHECKERED FLAG: Race is completed.
NOTE: The track is equipped with signal lights which shall be obeyed in the same manner as the flags. Special emphasis is on the red light. STOP immediately. DO NOT RACE to flagman.
Any point not covered herein shall be decided upon by the track director or his designated representative and his decision shall be final.
Once the lineups are posted, a driver may not change cars or switch to another car or switch to another race. Failure to make assigned race shall be entered on records as "no laps completed".
RACE PROCEDURES (back to top)
All racing equipment shall be placed as directed by track officials.
All cars must be on the track under power within 10 minutes of designated starting time for wheel packing. Failure to comply will result in no racing for that night. In case of a legitimate mechanical failure, said failure must be reported to track director or chief steward before the 10 minutes time period is over. (NO PACK NO RACE) At the discretion of the track director, the number of designated laps may change with the condition of the track. Cars completing the packing laps will be given full credit. Track director deems track ready to race.
Drivers will adhere to a 5 mile per hour speed limit in the pit areas. Violators will be suspended. No motorcycles in pits. Note: This applies to both tow vehicles and race cars.
Drivers must have race car signed in 45 minutes before race time to claim regular positions. Cars arriving after sign-in has been closed, will be placed on the back of the lineups.
The lineups for the heat races will be posted on the black board in the pit area (20) minutes prior to the race time. It is the responsibility of all drivers to check the lineup and move their cars into the staging area. Cars not in their proper place when track officials line cars on the track will fall in the back of the lineup. Any cars not on the track when barrier is closed will not be allowed to enter that particular race.
All starts will be running starts, two cars abreast-nose to tail with the pole car setting the pace. All drivers shall maintain their proper starting positions until the Green Flag at the white line is given signifying an official start. Any driver failing to maintain position can be Black Flagged, or penalized. Penalty will be one position for position for each car jumped with pole cars gong to the rear. Drivers can be disqualified or penalized for using the infield to gain a position at any time during the race. The decision will be at the discretion of the flagman and chief steward. This decision will be final!!
If RED FLAG is thrown, unless for realignment, cars may be worked on in a designated work area. When the track is cleared, all cars will immediately be called to start/finish line for realignment. Any car unable to return to start/finish line and not in proper position when roll signal is given, will fall in at the rear.
After one (1) complete lap under the GREEN FLAG, all restarts will be single file. All cars will be aligned in the same order as each car crossed the start/finish line in the first completed lap under the GREEN FLAG except those cars for which the RED and/or YELLOW FLAG was necessitated. Such cars will be placed at the car. This decision will be at the discretion of the track officials. On complete restarts, all cars must clear the marked position on the first start. Anyone intentionally causing the Yellow Flag will be Black Flagged. Any car causing two (2) Yellow Flags in one race will be Black Flagged from the race.
The number and type of events shall be determined by the number of entries in each division. (All races will be run as track officials feel is in the best interest of the race program).
A race may be declared official when the scheduled number of laps are completed or if stopped because of emergency with three (3) laps or less remaining (except trophy dash) or is stopped because of weather conditions after one-half of the scheduled laps are completed. A race may be called or postponed. A race may be designated complete by the director if determined to be in the best interest of the racing program.
Should a car become disabled during a race night and repairs not possible, the driver may not change to another car. The car and driver are scratched for the remainder of the program.
Should a driver become disabled during a race, the car owner may employ another driver, provided the replacement driver has not driven another car during the race program. The replacement driver must start in the back. A replacement driver may not drive in any other race than the original driver has qualified, i.e., if the original driver qualified for the "A" Feature prior to being disabled, the replacement driver would not be entitled the position which the original driver earned.
Unauthorized driver changes will result in disqualification of the car and driver, and forfeiture of all money and points earned during the race night and two race programs suspensions for both car and driver.
A race is complete when the lead car has completed the required number of laps and scoring will discontinued as soon as each car following cross the finish line once. Positions will be determined by the number of laps completed. If both cars completed the same amount of laps the position will be given to the car that finished his laps first. Example: Car A has finished 12 laps when the race is complete as has car B. Car A finished 12 laps on lap 14 of the race. Car B finished his 12 laps on lap 16. Car A takes the position because he finished his 12 first.
The official finish will be posted at the pay window. All questions or protests shall be filed before payment of purse has begun. All on-field judgments will be final. No reviewing of video tapes will be allowed.
RECORDS WILL BE KEPT OF MISCELLANEOUS DRIVING INFRACTIONS. SECOND WARNING WILL BE SUBJECT TO SUSPENSION.
Any rules and regulations will be at the discretion of OKLAHOMA SPORTS PARK.
GENERAL SAFETY REQUIREMENTS (back to top)
The safety requirements for all car classes are repeated here to emphasize their importance.
A. All cars subject to inspection at any time, must be free of mechanical defects, and be in safe racing condition.
B. Full face auto racing helmets meeting/exceeding current industry specifications required, and must be worn at all times car is on track and must accompany vehicle at time of inspection.
C. Bucket seats are mandatory and must be factory manufactured. Positively no homemade aluminum, fiberglass or plastic seats. Only approved seat installation and seat structure accepted. Seat must be properly installed, and seat backrest cannot be moved back further than the roll cage rear main hoop. No car will be permitted in competition unless seat is properly installed.
D. Fire retardant uniform, fire resistant shoes, nomex or leather gloves and driver side window net mandatory.
E. A 3” safety belt and shoulder harness with 2 belts over shoulders, and a quick release type are required. Must have a minimum of one submarine strap. All belts must be securely fastened to frame or cage. Belts must be replaced every four years beginning with belts dated 1994. Date tag or stamp is required.
F. Shock resistant roll cage padding on all bars that drivers head, legs, and arms may come in contact with while strapped in seat is required. A padded, functional headrest in line with center of the drivers head is mandatory.
G. Two throttle return springs and a steel toe strap on throttle are recommended.
H. An onboard fire extinguisher is mandatory.
I. With driver strapped in car minimum 2” head clearance required from top of roll cage to top of drivers helmet,
J. Drivers are required to have a working racing receiver while racing set to track frequency.
K. E-85 ETHANOL is rated at 105 octane and is legal for all classes of cars.
NUMBERS (back to top)
A. Numbers issued by the Oklahoma Sports Park Office only. Drivers have priority on numbers run in the prior season. These numbers must he confirmed by a completed entry form at the beginning of each season, or they will be reissued. Gold or silver numbers must be boldly outlined.
B. Paint numbers (in contrasting color to background) on both doors, 24” high, 4” wide strokes, and the same size on top above passenger side facing grandstand when car is on front straight. Paint 8” high numbers on headlight covers and on rear taillight areas so that track line-up official can line you up properly.
C. Numbers assigned and not run for three consecutive race programs may be declared open and re-assigned.
FACTORY STOCK GENERAL (back to top)
A.The factory stock division is intended to be an economical, semi-late model passenger car for entry level racers.
B. Must be rear-wheel drive, front-engine, American made passenger cars. No convertibles,pickups, station wagons or sports cars. Minimum wheelbase, 108” minimum. Minimum weight, 3200 pounds with driver.
C. All cars must be stock. Frame must he stock. No interchanging components. Original frame and casting marks cannot he removed, altered or covered.
D. Unless these Specs say you can do something, You CAN NOT!
BODY
A. Aftermarks bodies may be used, but you must keep stock floor pan. They should look as much like Factory as possible.
1. All wheel wells may be trimmed for tire clearance ONLY!
2. Remove front plastic inner fenders.
3. Inner door, hood and top bracing may be removed.
4. Cut hole in floor under and same size as fuel tank.
5. Car must have 4” minimum ground clearance.
B. All glass and flammable material must be removed. Cover headlight and taillight holes with sheet metal. Plastic trim, chrome trim and door handles must be removed. No rearview mirrors. No transmitting or listening devices in car.
C. Doors must be welded 12” front and rear or bolted using backing plates and a minimum of four bolts per side.
D. Must have stock front firewall and sheet metal rear firewall between trunk and drivers compartment. Holes must be covered. Driver compartment must remain open.
E. Stock dash may be replaced with sheet metal in stock location, no sharp edges.
F. Windshield screen required and must be full width extending from windshield post to windshield post and full height from cowl to car top. Maximum screen opening is 2’x 4’.
G. Bumpers must be mounted in stock location. Front bumper can be on 2” O.D. pipe or stock. May not exceed 48” in width and 8” from end of bumper must angle 10 degrees. Rear bumper may not exceed width of car and must be bent over or capped. Wrecker loops are mandatory front and rear. Nerf bars are optional. If used, may be no larger than l' x 2” square tubing cut and capped at 45 degrees. No sharp ends or edges.
H. Factory radiator core supports optional. When a fabricated support is used, maximum tubing size of 1.5”, 12 gauge may be used. Tubing may not extend beyond frame rail.
CHASSIS/SUSPENSION
A. Suspension parts must remain absolutely stock for make and model of car. No lumber, chains, etc. may be used to alter stock suspension. Stock-type springs only in stock location may be heated, cut or changed. Shocks and swaybar(s) must be in stock location. Chrysler power may be used in any chassis meeting rules. Aftermarket non adjustable upper A-frames may be used.
B. No coil-overs, load leveler or air type shocks.
C. Drive shaft must be painted white. Loop mandatory 6” behind front yoke.
D. Four wheel brakes mandatory, in working condition. Brake balance allowed, but it may not be adjusted from the drivers seat.
E. 9’ Ford allowed. Locking of rear end allowed. Mini spool may be used. Bolt-in-type rear axle must be welded at retainer. If axle comes out and no tack is found, there will be a 2 week suspension. Floater rear end may be used.
F. Transmission must be O.E.M. production-type automatic or standard 3-speed or 4-speed with reverse gear, in operating order. Torque tubes allowed. No mini-clutches.
ENGINE
A. Must be stock and O.E.M. V-8 cast iron block No modifications or alterations of any type. No Chevrolet vortex engines or engine components of any type. All engines and components must be stock and O.E.M. except for the rods, any steel rod. World Parts Sr torquer part # 4266 or RHS, Pro Torker, Part # 12403 heads may be used. No modifications or alterations of any type except pinning the studs or screw-in replacements. Poly lock rocker arm adjusting nuts allowed. Heads must remain in stock location. No moving or offsetting of dowels in blocks or heads. No porting, polishing or grinding anytime, anywhere on the header or intake or exhaust manifold. Flat top or dished pistons only. Aftermarket pulleys are allowed. No angle milling of heads. 6” rods ok. 362 cubic inches for Chevy and Ford. 368 for Chrysler. Stock stroke length only. + or minus .020 of an inch.
B. Engine location halfway between first and second spark plug even with center of front ball joint + or -1/2’.
C. Stock single point or stock high energy ignition systems only. No MSD type boxes allowed. Rev limiters for stock HEI type ignition highly recommended.
D. Carburetor: Any carburetor can be run except Predator. Can run spacer or adaptor 1 inch maximum thickness.
E. Cam: Any stock type flat tappet cam, No roller cams. Roller rockers allowed.
F. Intake must be cast iron. Headers may be used, No 180 degrees headers No headers that go over top of engine. No high rise intake manifold. Stock 305 aluminum manifold ok. No modification to intake or heads. No Powder coating, no grinding anywhere. They must be totally stock.
G. Only one radiator allowed, in stock location and its stock mounts. No bracing to front hoop (if used).
H. No Hi-rise Manifolds, cast iron or otherwise.
I. Battery may be relocated but must be securely mounted and covered with sheet rubber. Must be able to start car at all times.
J. Stock, deep, wet sump oil pan allowed. Relocated pickup tube allowed. Aftermarket oil pan may be used.
TIRES/WHEELS
A. Steel wheels only. Wagon wheels or rally wheels not to exceed 10’ width. May run bead locks on right front or right rear only.
B. One-inch lug nuts required.
C. Asphalt pull offs only. May not exceed 14 1/4” wide. Will be checked with hoop. Must Durometer 60 or better. No new tires! Asphalt pull offs are not new!
D. No Radials or re-caps allowed.
E. No hubcaps or wheel covers. Foam wheel inserts may be used.
F. No wheel weights (i.e. balancing weights.)
FUEL TANK FUEL SYSTEM
A. Fuel cell mandatory, must he securely and safely mounted.
B. Fuel delivery system must be stock mechanical type fuel pumps- no electric or pressure systems.
C. Gasoline only, no additives.
D. Fuel line cannot pass through drivers compartment, no vinyl or plastic line. Steel braid recommended.
ROLL CAGES
A. Four-post roll cage with diagonal brace behind driver is mandatory. Braces must remain within drivers compartment. Cage must be 1 3/4” O.D. x .095” wall thickness mild steel tubing.
B. Must have four-bar door protectors on both sides.
C. Horizontal bar between front vertical bars and under dash required.
D. Engine hoop to incorporate leg brace tub to protect driver.
E. Cage must be welded to frame in at least six places.
F. Roof hoop width 33” minimum, from front to main hoop 32” minimum.
G. Front fenders, quarter panels and front nose piece. One inch bar for bracing only.
H. Maximum angle of rear roll bar is 20 degrees. At least one bar from rear loop to front halo mandatory.
WEIGHT
Minimum weight, including driver, is 3200 pounds. Cars may be weighed at any time. Fluids or parts lost during a race may not be added to make weight. All weights must be double nutted or welded. At least two (2) 3/8” bolts, double nutted are mandatory.
MUFFLERS
All cars must have mufflers (in working order), type optional, but noise level CANNOT exceed 95 decibels measured 100 feet from car.
PRO STREET RULES (to the top)
CHASSIS
A. Any 1968 or newer, stock passenger street type car. No commercial vehicles, convertibles, sports-cars, or station wagons allowed. Minimum stock wheel base 108".
WEIGHT
Minimum weight, including driver, after race is 2,800 pounds. Any added weight must be securely bolted.
FRAME
a. American made OEM front frame clips mandatory
b. No after market front frame clips. No McPherson struts
c. Clips cannot be cut forward of lower A-frames and if rear steer they cannot be cut forward of steering box or idler arms.
d. No pick-ups or foreign car or truck clips allowed. This mean no Nissan, Toyota’s etc.
e. Chevrolet motors must be in Chevrolet frames.
f. Ford and Mopar may use Chevy, Ford, or Mopar frames.
g. Full frame cars OK.
SUSPENSION
LEAF SPRINGS OR 3 LINK SUSPENSIONS AS DESCRIBED BELOW ARE THE ONLY SUSPENSIONS ALLOWED!!!
a. Any coil springs with a minimum diameter of 4” can be used. Steel only. One spring per wheel.
b. No coil-overs or coil spring eliminators allowed.
c. Sway bars may be used if mounted in stock location.
d. No air shocks
e. Weight jacks are allowed on all four corners.
f. Leaf springs can be steel or fiberglass or composite with sliders, shackles and lowering blocks OK.
g. Racing shocks OK but only one per wheel.
h NO adjustments for shocks or weight jacks can be in driver’s compartment.
i. Three links can use stock trailing arms or use swedge bars and heims. A pull bar going from top of rearend housing forward instead of stock upper arms can be used. Upper link may not go past rear of roll cage behind the driver. Upper pull bar can be constructed of lower trailing arm with rubber bushings. Panhard or J-bars allowed. Adjustments allowed, but NO biscuits, springs, damper shocks or torque absorbers allowed.Camaro front clip must use leaf springs or if 3 link is used lower bars must remain the same height on both sides or if 3 link is used lower bars must remain the same height on both sides. All rear end componets must be attacked in stock locations.Camaros may use adjusters on rear of leaf springs.
j. Spindles must be stock type. No aluminum..
BODY
Gutting allowed. All body chrome, glass, plastic, and interior must be removed. All doors and trunks must he welded or bolted. Body must be neat and have acceptable Front Firewall. Rear firewall may he stock, with all openings sealed or may he metal of minimum 20 gauge thickness. In either case, the top, bottom, and both sides must he fully sealed and with no openings. Fuel cells may protrude through bottom of trunk, and must have adequate protection (drop hoop, etc..), and must be in steel case. The front windshield area must be covered with approved driver protection screen. Stock appearing rubber or plastic nose pieces are recommended. The car must be brightly painted in colors that contrast with the car number. Numbers must be at least 18” in height and 3” in width on both doors, top and rear of car. Aftermarket bodies will be allowed, but I prefer them to look factory. Aftermarket spoilers may be no taller than 4 inches.
STEERING
Stock steering box must be in original stock location, steering wheel may be removed by u-joint. Or aftermarket steering reduction box, NO center steering. Steering wheel and driver must be on left side of drive shaft hump. No rack and pinion steering allowed.
ENGINE
Any automotive engine originally produced by an American manufacturer for passenger car use not to exceed 8 cylinders and not to exceed one intake and one exhaust valve per cylinder. Make optional, but must be same manufacturer as frame and body and must remain in stock location. Stock number of cylinders for make and model of car. Cast iron blocks only, no bowtie blocks.
A. Maximum displacement, to include wear and clearance, is: GM—362” total, Ford—362” total, Chrysler-368” total, all others must not exceed 362" total.
B. Heads: Any cast iron head that is sold retail for $500 or less. No modifications to any head other than straight milling.
C. No porting and polishing, or heads or blocks permitted. Bowls may not exceed an 80 degree angle. Heads may be surfaced. Stock Stroke only. Stroke length must be + or - .014 of an inch of stock. No sleeved back engines permitted, flat top pistons only. Valve sizes may not exceed 1.60 ex, 2.02 intake. Chrysler and Ford stock valve size for head used.
D. No roller cams, mushroom or roller lifters, or overhead cams allowed.
E. One four barrel carburetor max 1’ spacer with two standard thickness gaskets. No predators or dominators.
F. Intake Manifold optional.
G. Battery type ignition only, no magnetos. MSD may be used but swap rule with track is in effect.
H. The use of injection, super or turbo chargers, nitrous oxide, or water injection will not be allowed.
I. No injector type pumps. Electric fuel pumps are not allowed. Any steel rod.
J. No dry sump or external oil pumps allowed.
K. Engine must be in stock location + or - 1” from upper ball joint center line.
L. No Predators allowed. Maximum 1” adapter plate under carburetor
OKC ALUMINUM SPECHEAD RULE
a. All spec heads will be applied with CNC bowl blend and make matching
b. No grinding or blending of CNC work is allowed.
c. No grinding or polishing of any kind is allowed anywhere on the castings.
d. No use of any substance that may change or alter the shape or size of ports or combustion chambers is allowed.
e. Valve seats and guides are to remain as manufactured and in their cast position, valve must stay on valve seat and cannot touch aluminum.
f. Valve angles are to remain as manufactured. The original seat center locations as provided by the head manufacturer may not be altered.
g. No tapering or reshaping of value guides will be allowed.
h. No minimum combustion chamber volume.
i. Spec cylinder head serial numbers must remain on the head and may not be defaced or altered.
j. No welding modifications are allowed to the original castings. Brodix will provide a repair service where we register and keep track of repairs if you desire. (Chevrolet part number SP CH OKC) (Mopar part number SP MO OKC) (Ford part number SP FD OKC) IMCA stamped head OK.
k. Valve stems may be no smaller than 11/32.
l. Fuel: and power steering pumps. Type optional. Must be run off front of motor, except oil pump.
SAFETY: ALL CARS SUBJECT TO INSPECTION AT ANY TIME.
A. Mandatory: 3” wide safety belt and shoulder harness with two belts over shoulder and of the quick release type. All belts must be securely fastened to the frame or roll cage. Belts must come from behind the driver.
B. Mandatory: Shock resistant roll bar padding.
C. Mandatory: Two throttle return springs, steel toe loop on throttle pedal is required.
D. Mandatory: All cars must have a fire extinguisher securely mounted within the reach of the driver for emergency use. No extinguisher may be taped to the mounting bracket or roll bar cage.
E. Mandatory: All drivers must wear driving suits made of a fire resistant material, and the suit should effectively cover the drivers body.
F. Mandatory: Seats that have been approved for marketing as racing seats may be used if properly secured to body chassis and roll cage with aircraft bolts a minimum of 3/8” diameter.
G. Mandatory: Racing helmets meeting specifications set forth in TITLE 49, CODE OF
REGULATIONS, Part 571, Federal Motor Vehicle Safety Standard Number 571.218, or meeting the specifications set forth by the American National Standards Institute Inc. In ANSI 290.1-1971, ANS 290.1-1973, and ANSI 290.1-1979 required and must be worn at all times car is on track. Helmets must accompany car at time of inspection.
BRAKES
All cars must have minimum of four wheel brakes in working order. Brake balancing allowed. (Note rear calipers and rotors need not match).
WHEELS
Steel wheels only. Maximum 10” wide. One valve stem per wheel. No bleed off valves permitted, All wheels must have a minimum of five 1” lug nuts. Reinforcing of wheels is permitted. No dual, magnesium, or aluminum wheel allowed. All wheels must have double center plates or have 1/4” thick steel centers. Wide 5 pattern is okay. Cars may run bead locks on right side of car only.
TIRES
NASCAR pull-offs only!! Must durometer 60 or better.
MUFFLERS
A. Stock cast iron exhaust manifolds with no modifications are acceptable. With stock cast iron manifolds, mufflers required and car must no exceed 95 decibels at 100 feet.
B. Headers may be used. With headers, 16” Lobak mufflers or comparable brand are required. Only 2 mufflers per car allowed. No muffler modifications are allowed, NO zoomies. No leaks in exhaust on front side of mufflers. Cross over type headers may not be exposed in drivers compartment. Must exit through floorboard. Holes through body must be neat and sliced to header tubes.
ROLL CAGES
Steel roll cage mandatory. Front and rear bars must be connected at top (cage type). At least three side door bars front and rear roll bars is required. Minimum 1‘1/2” O.D. will require minimum of.120” wall tubing. Rear hoop must be welded to floor no more than 4” past door crack.
REAR-END
Any passenger car or pickup production rear end may be locked by: welding spider gears, mini spool, or by whatever mean. Stock Ford 9” may be used. Floaters acceptable. No limited slip, Detroit lockers, except ones that are locked solid with a spool locking device. Quick changes may be used, but must have steel axle tubes.
TRANSMISSION
OEM Standard or Automatic
A. Type optional. Bert or Brenn type of transmissions are okay.
B. Car must have self starter. neutral, and reverse gear in operating order.
C. Car must be able to leave pits and starting line under it’s own power.
D. From a neutral position, with engine running, car must be able to go forward and backward.
E. Drive shafts must be painted white.
F. Safety loops are mandatory.
G. Lakewood type scatter shield bell housing is required when needed.
BUMPERS
A. Bumpers need to look as close to stock as possible. No railroad type of bumpers. Uprights to protect the radiator may be constructed inside grill shell.
B. Nerf bars optional, but if used must be within 1” of body. Bumpers and nerf bars must have rounded ends with no sharp edges.
FUEL TANK
A fuel cell is mandatory. Fuel cell must be fully enclosed in a metal box of .20 gauge thickness minimum. In either case, the fuel container must be securely fastened to the trunk floor and frame with metal straps and bolts. Drain holes of 1/8” should be drilled in the metal box and trunk floor to release any fuel spillage that may occur.
FUEL
Race fuel or Methanol. No Additives
RADIATOR
Only one radiator and it must he centered in front of engine in vertical position. No auxiliary cooling tanks allowed. Metal Shrouds are Mandatory!
BATTERY
Must be securely mounted and covered with sheet rubber. Battery must be in good working condition and capable of starting car.
PROTESTS
See general rules.
MISCELLANEOUS
A. Rearview mirrors are not allowed. No radio transceiver communications systems allowed,
B. Rupture of a gas tank or loss of fuel requires leaving the race track immediately.
C. Any loss of wheels, flat tires, dislodged hoods or body parts requires leaving the race track immediately.
ALL DRIVERS MUST HAVE WORKING RACEIVER BEFORE ENTERING TRACK. NO EXCEPTIONS!!!!!
PURE STOCK (back to top)
CARS: Minimum 108” wheelbase.
SAFETY
4 point roll cage with door bars on both sides. This is absolute minimum. Bars can go through front or rear fire walls. Driver must have helmet (see helmet requirements), safety belt, and shoulder harness. Remove all glass. Doors must be securely fastened. Door brace OK. Must be inside of car. Harness must be racing type 5 point securely mounted. Will have to pass inspection. Removal of dash and components inside of drivers compartment optional (example, emergency brake pedal.) No modification to body, no cutting suspension, or engine. Working horn and car radio optional. Stock bumpers only. No battering RAMS. No excess metal behind bumpers. Four door bars on drivers side mandatory. Recommend bars be plated with steel plate. Only one radiator in stock location. Fuel cell highly recommended.
STEERING
Must remain stock.
SUSPENSION
Stock! No moving, changing or modifications. Springs must be factory. Shocks must be factory. NO RACE PARTS!!
WHEELS AND TIRES
10” wide wheels. NASCAR pull-offs only. Recommended 3/8ths studs with 1 inch lug nuts. Tires must durometer 60 or more after the “A” feature. 1” lug nuts mandatory! May run bead locks on right side of car only.
REARENDS
Stock. Locking allowed. 9 inch Ford or 9 inch floater allowed for safety. Must be in stock location. Cars must have numbers on both sides and top of car. Also, must be at least 14” height. Must be legible. (3) Digit or (2) digit and (1) letter. No high performance parts, either stock or aftermarket. This means no double hump or any other type high performance heads, or alteration to heads of any kind!!! Head must be considered open chambers. Track may check any part of car at any time. The minimum weight with driver is 3800 pounds after the A feature. Lost parts may not be re-added! NO TOLERANCE!
ENGINE
362 C.I., 368 C.I. Maximum, Mopar stock intake, stock exhaust manifolds. Cam can have no more than .390-.410 lift, Chevrolet, Ford, and Mopar may have up to .420 lift max. Must be hydraulic and will be measured at valve tip. 600 CFM Holley, Model # 4160, part number 0-80452, 0-80453, or 0-80454. Other than these carburetor must be stock. Maximum valve size 1.94 intake, 1.50 exhaust.Legal heads numbers are for gm 126,185,336,441,445,487,493,598,624,862,882,920,993 and 997. Cannot be touched under valves with any kind of tool. Steel or cast OEM crankshafts only.Racing oil pans allowed. Stock 5.7 inch rods only. Any cast iron OEM heads for Ford and Chrysler are OK, but valve sizes amy not exceed 2.04 inch intake and 1.70 inch exhaust. No Vortec, Bowtie, SVO, W2, or any other high performance heads allowed. Stock diameter valve springs only.
ALL DRIVERS MUST HAVE WORKING RACEIVER BEFORE ENTERING TRACK. NO EXCEPTIONS!!!!.
MODIFIED RULES (to the top)
RULES/INSPECTIONS
1.All cars subject to a safety and technical inspection at any time at the track. Approval of a vehicle by a track inspector means only that the vehicle is approved for participation in a racing event and shall not be constructed in any way to mean the inspected vehicle is in a mechanically safe and sound condition. Officials can disqualify any car or driver for any perceived unsafe equipment or action.
2. Uniform interpretation of these rules at all tracks will be insured by designated officials.
3. The rules set forth herein are only designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. No expressed or implied warranty of safety shall result from the publication of, or compliance with, these rules and/or regulations. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to participate.
SAFETY
1. Main roll cage (halo and four down-tubes) must consist of continuous hoops not less than 1 ½" O.D. and an inner wall thickness of no less than .095". Must be welded to frame. No brazing, no soldering. No part of the main cage can extend farther forward than the engine plate.
A. Must be frame-mounted in at least six places, securely supported and cross-braced.
B. Must consist of a configuration of front and rear hoops connected by tubing on the side hoops. The top hoop must have a crossbar and the drivers head (with helmet on) must not protrude above the cage. Padding required on tubing around driver.
C. Protection of drivers feet is mandatory. Bar across back of the engine with vertical bars and rub rails or similar protection is required..
D. Brace bars forward of the cage cannot be higher than a stock hood height.
E. Driver door bars must be at least three 1 1/2'" O.D. bars which are welded directly to the front and rear members of the main roll cage. Bars must be parallel to the ground and perpendicular to the driver to provide maximum protection but without causing undue difficulty in getting into or out of the race car. Door plates recommended and may be required later.
2. Helmet must be current SNELL rating, and is required at all times the car is on the track. SFI approved full fire suits, fire retardant neck braces and fire retardant gloves must be worn while in competition. Fire retardant shoes are recommended.
3. Competition five-point safety belts, and shoulder harness required. Metal-to-metal buckles required on shoulder and seat belts. Shoulder harness must be securely mounted to the roll cage at a height even with or above the driver’s shoulders. Belts and harnesses must be no more than one year old.
4. Either arm restraints or a driver-side window net is required. The window net will be mounted to place the latch at the top front of the driver side window.
5. Both side windows of the car must have at least a 12 inch vertical opening to allow easy entry and exit from the car.
6. All cars must have fuel cells (maximum 32 gallons) enclosed in a metal container. Fuel cells must be mounted between frame rails, secured with at least two 2" wide steel straps, be mounted securely behind rear axle (protected by roll cage tubing) and be at least 4" forward of the trailing edge of the rear bumper. Fuel cells must have check valves and fuel pick-up from the front, side or top of the cell. Bladders are recommended.
7. Protective tubing (fuel cell loop) must cover the rear of the fuel cell with no part of the fuel cell extending below or to the sides of the loop. Loop cannot be wider than leaf spring shackles. No part of the loop can extend past the trailing edges of the rear bumper.
8. Batteries must be securely mounted and shielded. Batteries mounted inside the race car must be in marine-type cases.
9. Exhaust systems must be mounted in such a way as to direct exhaust away from driver and areas of possible fuel spillage. The driver’s compartment must be sealed from the track and exhaust gasses.
10. Loose objects must not be used in driver’s compartment or outside the car body nor the hood area. Any weights added to other areas of the car must be inside the car body-not attached to the bumper or fuel cell loop. Such weights must list the car number, be painted white or silver and each must be mounted with at least two ½" bolts.
11. Drive shafts must be painted white or silver and have a loop mounted no more than six inches from the front of the drive shaft. The loop must be constructed of ¼" thick by 2" wide steel stock, or equivalent, and must totally encircle the drive shaft (360 degrees).
12. All transmissions with clutch mounted to flywheel require a steel explosion-proof bell housing. All other transmissions (manual or automatic) must have SFI approved flywheel shield. (Shield can be constructed of ¼" x 3" steel, 270 degrees around flex plate flywheel.)
13. Brakes must be operable and must lock-up three wheels during an inspection. Shut-off valve is allowed on right front brake. Front-to-rear proportioning valves and/or brake bias systems are allowed.
14. Ignition ("KILL) switch must be within easy reach of the driver and must be clearly marked "ON” or “OFF".
15. Each car must have a 5-pound (minimum) fire extinguisher in the immediate pit area.
LINE-UPS
Must be capable of starting to join the line-up, without being pushed or pulled, or goes to rear of the line-up.
PROTESTS – MODIFIED AND LIMITED MODIFIED
1.Protests must be specific, in writing and filed with the designated OKLAHOMA SPORTS PARK OFFICIAL BEFORE feature . See general rules for further information.
2. After the Feature the protested car driver will be informed and the specific item(s) will be checked.
3. When a protest is upheld (the technical inspector is the sole authority) and the violation provides a distinct competitive advantage, the car will be disqualified and the fee will be returned with $25.00 held for the drivers point fund.
FRAME
1. Factory production full 1968, or newer, parallel American passenger car frame only. No Jeep, Bronco, Four wheel drive, front wheel drive or sports frames allowed. No front clips or tube allowed.
2. Frames cannot be widened nor narrowed and must be able to support the main cage on both sides. Must be full and complete on both sides. Minimum clearance from the frame and body to the ground is 4" (except front cross-member).
3. The cross-member can be notched for radiator and/or steering clearance only. Excessive notching is prohibited. The rear of the frame can be altered to accept coil or leaf springs. Frame can be cut in the rear only at a point no more than 35" forward from the center or rear end housing. NO other alterations allowed.
BODY
1.No station wagon or panel van body styles. Body must resemble an American compact passenger car. Must have open front and rear window area, original roof line, stock-appearing windshield and rear window support bars, firewall and floorboard.
2.Front bumper must be at least 8" high (top to bottom) and be mounted frame-end-to-frame-end or directly to the side of the frame horns. The top bumper bar must be directly above (within 1") the bottom bar and bottom bar must be parallel to the ground with the center of the bumper between 16" and 20" from the ground. Must be at least 1 ¼" tubing stock strong enough to support the car when lifted by a wrecker. The leading edge of the bumper can be no more than 42" forward of the front wheel spindle.
3. The front panel (nose piece) of the car can be no lower nor wider than the frame horns, be no farther back than the radiator and cannot have any lips or flares on the top surface.
4. The engine compartment must remain open. No side panels.
5. The hood sides can drop no more than 4", have no more than 3" rake (front-to-rear) and must be sealed-off in the rear. The maximum hood scoop or air cleaner height, from the top surface of the hood is 6".
6. The roof must be one piece of fiberglass between 41" to 56" long and 44" to 50" wide. The height of the roof to the ground will be 42" to 52". With a four foot level on the center 12" of the roof, the roof rake must have no more than 5" clearance from level to front lip of roof and no more than 2" clearance from level to rear edge of roof. When a roof is "level" only at the rear of the roof ("Flat"), such roof can have no more than 3" rake front-to-rear.
7. Must have at least three windshield bars in front of the driver. Can use a half-windshield (lexan or metal) which is mounted to the roll cage and/or windshield bars. No flare or lips on the half windshield. The top of the half-windshield can be no more than 2" above the top edge of the steering wheel.
8. The passenger side of the body can extend no farther than 72" from the center of the rear axle. The driver’s side can be extended forward to cover the driver’s foot box. No panels are allowed in front of the passenger side. No inner panels allowed. The body sides must be vertical and must measure 22" to 27" from top-to-bottom on either side. A slight flare can be on the bottom edge of the sides provided it is no more than 4" in length at an angle of no more than 45 degrees from vertical.
9. The interior (top panel) must be flat and flush with the top of the sides and quarter panels. The gradual front-to-back rise of the interior must be 4" or less. If it is flat to the back of the driver, then the remaining rise from behind the driver to the end of the quarter panel cannot be more than 2". No wings, spoilers or ground effects allowed on car.
10. Both rear tires must be outside the body, rear bumper and nerf bars when viewed from the front, rear and top. The combined distance of these tires outside the body, left and right, must be at least 6" (measured from the outside edge of tires to body). Nerf bars cannot contain any edges sharp enough to cut a tire.
11. The length of the quarter panels (and rear bumper), from the center of axle to the trailing edge of the rear bumper, must be between 34" and 45".
12. The rear side window area (sail panel) must closely resemble one of the examples in the drawings. The sail panel can be solid, open or clear (lexan). The trailing edge cannot have any lips or flares and must form a continuous straight line from the rear outside corner of the roof down to the top of the quarter panel. The lower end of the panel can have a vertical drop of no more than 2" to the quarter panel. No plastic body parts (except Lexan window).
13. The rear panel must be solid, extend from quarter panel to quarter panel and must be securely attached to the top panel and quarter panels. The rear panel must extend at least 8" down from the top panel and must be at a 90 degree angle with the top panel. The top of the rear panel must be 28" to 38" from the ground.
14. The single bar rear bumper must be constructed of steel square or round tubing stock, protect the fuel cell and the center of the bumper must be 16" to 20" from the ground. No double or triple bar bumpers. Cannot have any sharp edges which could cut a tire.
15. The car number must be painted on the nose piece, rear panel, roof and both/quarter panels. The roof and side number must be at least 20" high and 4" thick.
16. Spoiler may not exceed 5" in height.
SUSPENSION/STEERING
1.Front suspension and sway bar must be O.E.M., in stock location and must be replaceable by stock parts from same type suspension. Steel Heims and sleeves (minimum 5/8") can replace tie-rod assembly. Stock passenger car spindles only. Tube-type upper A-frames are allowed and can be moved but the bottom A-frames cannot be altered or moved O.E.M. center link can be reinforced
2. No aluminum or fiberglass suspension parts allowed. No covers allowed on suspension parts except a clear cover on shock eliminator slider and a a180 degree rock shield to protect front half of shock.
3. One steel (body and internals) shock per wheel is allowed and additional chocks can be used in other locations. Any or all shocks on the car can be claimed for $50.00 each. Shock claim procedure is the same as the engine claim procedure and a shock claim will be counted as an engine claim. No air shocks or air bags permitted.
4. No aluminum hubs or calipers. Calipers must be O.E.M. and cannot be lightened. Rotors cannot be drilled (except for a different bolt pattern or for larger studs) nor lightened.
5. No coil-over shocks allowed on the front or rear. Any coil springs must be made of steel and have an outside diameter of at least 4 ½".
6. No hydraulic, ratchet or electrical weight jacks allowed in or on the car. No torsion bars allowed in rear.
7. No rack and pinion steering. Quickeners allowed. The steering box must be O.E.M. with at least one bolt within the original bolt pattern. No center steering (left side only) but may be modified in the cockpit to suit the driver.
8. The maximum width of the front tires, measured from outside tread to outside tread, is 78".
POWER TRAIN
1. Can use any American made engine with steel heads and block.
a. Rear of engine (bell housing flange) must be mounted at least 72" forward of the centerline of the rear axle. Engine offset must be within 2" of the centerline of the front frame cross member. The minimum engine height is 11" from the ground to the front center of the crankshaft.
b. Cooling systems can be modified as long as radiator and/or coolers do not extend above the interior. Over flow tube(s) must be directed toward the ground inside the frame rails.
c.No total dry sump oiling systems allowed. The wet systems must be operable and, if claimed, will go with the engine.
d.Fuel can be gasoline or alcohol. No performance fuel additives of any kind. Use of any such additive will subject the driver to a $1500 fine, four weeks suspension from OKLAHOMA SPORTS PARK RACES for the driver/car and loss of all points for the year.
e.A single two-barrel or four-barrel naturally-aspirated carburetor is allowed. Fuel injection, electrical fuel pumps and/or magnetos are not allowed.
f. Engines used in competition must be capable of use in a conventional passenger car without alterations. Motor mounts, castings and/or fittings cannot be altered. Machine work on the outside of the engine, front of camshaft or rear of camshaft is not allowed.
g. Electronic monitoring or data storage devices (except tachometer) are not allowed. No radio transmitting or listening devices are allowed in the car. No traction-control system/devices. No systems/devices which can affect engine performance are allowed within driver’s reach in the cockpit. There is a $1000 fine for using such devices or systems, an eight week suspension from OKLAHOMA SPORTS PARK events for driver and car and loss of all points for the year.
h. Mufflers are required.
2.Transmissions:
a. Must have forward, neutral and reverse. With the engine running and the car stopped, the driver must be able to engage the transmission and move forward the stop, go to neutral, engage the transmission and move backward. The engine must continue to run during these maneuvers.
b. Direct-drive, in/out boxes, and/or quick change transmissions are not allowed.
3. The drive shaft/rear end must be all steel except for lowering blocks, axle cap and drive plate.
a. Any passenger car or truck type rear end with a one piece drive flange can be used.
b. Cambered rear ends not allowed. Steel tube quick change rearends ok. No traction control.
c. Width of rear tires must not exceed 78", measured outside tread to outside tread. Wheel base, from center of rear axle to center of front spindle must be no less than 108" on both sides.
TIRES/WHEELS
1. Hoosie 704, G-60 non stamped, or G-60 stamped only.
2. Conventional one-piece steel wheels with a maximum width of 8". Foam or plastic mud plug and a metal bead lock can be used on the right rear only. Bead lock wheel width must be 8.00 to 8.75 inches. Beadlocks on right side of car only. Maximum ½" spacer between hub and wheel. Bleeder valves are allowed on any wheel. Grooving of tires allowed in original grooves.
WEIGHT LIMITATION
1.All qualifiers and the first six Feature finishers will be weighted. Each car, with driver and helmet, must have a minimum weight of 2350 pounds.
2. Failure to proceed directly from the track to the scales will result in the car being placed in the last position of the lead lap of the completed race (heat, B-Main, or Feature). NO EXCEPTIONS
3. Failure to meet minimum weight requirements after any race will result in the car being placed in the last position of the lead lap of the race just completed.
Minimum weight with driver is 2350 pounds.
SPORT MOD RULES (back to top)
RULES/INSPECTIONS:
All cars are subject to a safety and technical inspection at any time at the track. Approval of a vehicle by a track inspection means only that the vehicle is approved for participation in a racing event and shall not be construed in any way to mean the inspected vehicle is in a mechanically safe or sound condition. Officials can disqualify any car or driver for any perceived unsafe equipment or actions.
Uniform interpretation of these rules at all tracks will be insured by the designated track officials.
By competing in OSP events, a driver agrees to comply with these safety and technical rules.
The rules set forth herein are only designed to provide for the orderly conduct of reacing events and to establish minimum acceptable requirements for such events. No expressed or implied warranty of safety shall result from publication of, or compliance with, these rules and/or regulations. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to participants.
SAFETY
A. Main roll cage(halo and four down tubes) must consist of continuous hoops not less than 1-1/2” O.D. and an inner wall thickness of no less than .095”. Must be welded to frame-no brazing- no soldering. No part of the main cage can extend farther forward than the engine plate.
1. Must be frame mounted in at least six places, securely supported and cross braced.
2. Must consist of a configuration of front and rear hoops connected by tubing on the sides or side hoops. The top hoop must have a crossbar and the driver’s head(with helmet on) must not protrude above the cage. Padding required on tubing around the driver head.
3. Protections of the driver’s feet is mandatory. Bar across the back of the engine with vertical bars and rub rails or similar protection.
4. Brace bars forward of the cage cannot be higher than a stock hood height.
5. Driver door bars must be at least 1-1/2” O.D. bars which are welded directly to the front and rear members of the main roll cage. Bars must be parallel to the ground and perpendicular to the driver to provide maximum protection but without causing undue difficulty in getting into or out of the race car. Door plates recommended and can be required by local tracks.
B. Helmet must be Snell S A0 or SA 95, and must be worn at all times the car is on track. SFI-approved full fire suits, fire-retardant neck braces and fire-retardant gloves must be worn while in competition. Fire-retardant shoes are recommended.
C. Competition five-point safety belts, sub belts and shoulder harness required. Metal to metal buckles required on shoulder and seat belts. Shoulder harness must be securely mounted to the roll cage at a height even with or above the driver’s shoulders. Belts and harnesses recommended to be no more than one year old.
D. Either arm restraints or a driver side window net is required. The window net will be mounted to place the latch at the top front of the driver side window.
E. Both side windows of the car must have at least a 12 inch vertical opening to allow easy entry and exit from the car.
F. All cars must have fuel cells (maximum 32 gallons) enclosed in a metal container. Fuel cells must be mounted between frame rails, secured with at least two 2” wide steel straps, be mounted securely behind rear axle (protected by roll cage tubing) and be at least 4” forward of the trailing edge of the rear bumper. Fuel cells must have check valves and fuel pick up from the front, side or top of the cell. Bladders are recommended.
G. Protective tubing (fuel cell loop) must cover the rear of the fuel cell with no part of the fuel cell extending below or to the sides of the loop. Loop cannot be wider than leaf spring shackles. No part of the loop can extend past the trailing edges of the rear bumper.
H. Batteries must be securely mounted and shielded. Batteries mounted inside the race car must be in marine-type cases.
I. Exhaust systems must be mounted in such a way as to direct exhaust away from the driver and areas of possible fuel spillage. The driver’s compartment must be sealed from the track and exhaust gasses.
J. Loose objects must not be used in the driver’s compartment nor outside the car body nor the hood area. Any weights added to other areas of the car must be inside the car body – not attached to the bumper or fuel cell loop. Such weights must list the car number, be painted white or silver and must be mounted with at least two ½” bolts.
K. Drive shafts must be painted white or silver and have a loop mounted no more than six inches from the front of the driveshaft. The loop must be constructed of ¼” thick by 2” wide steel stock, or equivalent, and must totally encircle the driveshaft (360 degrees.)
L. All transmissions with clutch mounted to flywheel requires a steel explosion-proof bell housing. All other transmissions (manual or automatic) must have SFI approved flywheel shield. (Shield can be constructed of ¼” x 3” steel, 270 degrees around flex plate/fly wheel.)
M. Brakes must be operable and must lock-up three wheels during an inspection. Shut-off valve is allowed on right front brake. Front to rear proportioning valves and/or brake bias systems are allowed.
N. Ignition (“Kill”) switch must be within easy reach of the driver and must be clearly marked “ON-OFF.”
O. Each car must have a 5lb (minimum) fire extinguisher in the immediate pit area.
LINE UPS
A. All race line up procedures are determined by the track.
B. Race car must be capable of starting to join the line up, without being pushed or pulled, or goes to the rear of the lineup.
PROTESTS
A. Protest myst be specific, in writing and filed with the designated OSP track official before the “A” feature starts. See General Rules.
B. After the feature the protested car driver will be informed and the specific item(s) will be checked.
C. When a protest is upheld (the technical inspector is the sole authority) and the violation provides a distinct competitive advantage, the car will be disqualified and the fee will be returned.
D. When a protest is denied, half the protest fee is awarded to the protested driver and $25.00 is retained by the track.
FRAME
1978-1987 OEM midsize GM metric full frame only. Minimum wheelbase 107-inches, maximum 109-inches, both sides. Frame must be full and complete, cannot be widened, narrowed, shortened, lengthened or be cut, bent, or altered to change suspension brackets, except upper control arm brackets on front end. All frame bolt holes must remain in OEM location. Front frame horns may be removed in front of steering box. Front frame may be cut for radiator clearance. Frame may be notched for seat clearance. Transmission cross member mounts may be removed, no further forward than frame welds. Rear of frame, behind upper shock mounts, may be replaced with round, square, or rectangular tubing. No part of frame can be lower than five inches from ground except front cross member. No other frame alterations are allowed.
ROLL CAGE
Must consist of continuous hoops, minimum 1.5 inch O.D. tubing, with a minimum wall thickness of .095 inch for main cage. Cages must be steel or chrome-moly. Main cage no further forward than rear of engine and no further back than front edge of rear tire. Four bars, two per side, may extend from main roll cage to main frame points in front of the upper control arms. These bars may have two additional braces per side to the main frame. Six bars may extend from the main cage to the rear. X-bracing is allowed. Driver’s head must not protrude outside cage with helmet on. Roll cage must be securely supported and braced with minimum one cross bar in top halo. All bars forward of cage must be lower than hood.
DOOR BARS
Minimum three driver side door bars required, minimum 1.5 inch O.D. and .083 inch wall thickness, must be parallel to ground and perpendicular to driver and welded to front and rear of roll cage. Minimum two passenger side door bars required, must have at least one cross door bar, horizontal or angled. Steel door plate, 18 gauge or .049-inch minimum thickness, must be securely welded to outside of driver side door bars and cover area to protect driver.
BODY
Must be same width, front to rear, and parallel to OEM frame. Engine compartment must remain open (no side panels). Aluminum or fiberglass hooks allowed, must completely cover top of radiator and engine, extending from nose to interior deck and enclosed at rear. Must have front and rear roof supports. No Gremlin roofs. No plastic body panels or filler panels allowed. Must have complete interior deck from side to side, must be aluminum or sheet metal. Quarter panels must remain 90-degrees to ground, maximum 45-degree bend 4-inches from bottom and 2-inches from top of doors and quarters. Rear spoiler may be a maximum 8 inches in material height and maximum 67 inches wide. Spoiler may have stiffener, must be 1 inch or more down from top. Maximum 3 spoiler braces allowed, must be mounted in line. No fins, lips or wings allowed.
DRIVER COMPARTMENT
Must have minimum three 5/16 inch O.D. windshield bars in front of driver. Aluminum cowl panel in front of driver can be no wider than cockpit. Aluminum high-back seat only, must be securely bolted, using minimum 0.375-inch bolts, to roll cage and support system. Floor pan must be metal or aluminum and cover entire driver compartment. Bottom of seat can be no lower than bottom of frame rail. Driver must be sealed off from track, drivelines, engine, fuel cell, canisters and pumps. No oil coolers allowed in driver compartment. No devices that would enable driver adjustment to alter wheelbase or for weight jacking while car is in competition. No mirrors of any kind.
SUSPENSION/STEERING
A. Steering: All components must be steel, unaltered OEM, in OEM location and match frame.No grinding, lightening, or welding on any steering parts. Spindle may be reamed and bolt on spindle savers are allowed. Steel steering shafts and knuckles only. Steering quickener(optional), steering wheel and quick release (required) may be aluminum. Power steering pump and reservoir must remain one unit. Driver compartment steering may be modified, must be kept on left side. No rack and pinion.
B. Shocks: One steel shock per wheel only. Shock must be in OEM mounts and location, using OEM style shock. Mounting spacers and weld or screw-on shock ends allowed. No air or coil-over shocks, remote reservoir shocks, Schrader valves or refill ports.
C. Springs: One steel spring (racing allowed) per wheel only. Minimum 4.5 inches O.D., non-progressive coils only. No torsion bars or air bags.
D. OPTION #1 Rear Suspension: All control arms and mounts must be steel, unaltered OEM, in OEM location and match frame. No jack bolts allowed. Adjustable spring buckets allowed, may be dropped as long as they remain in OEM location. If upper spring cup uses all thread, it must be securely welded to chassis. Lower spring cups must be centered on housing. Control arms may be reinforced, but cannot be shortened or lengthened, must remain OEM length. All control arm bushings may be aftermarket, but no bearing/heim type. No suspension parts may be altered or lightened. No aluminum parts allowed
E. OPTION #2; May use 3 link rear suspension with heim type attachment. No biscuits or cushions of any type on linkages. Panard bar or j-bar ok .
F. FRONT SUSPENSION All componets must be steel, unaltered OEM, in OEM location,and match frame No jack bolts allowed.. Adjustable spring buckets allowed. Must use OEM upper and lower A-frames and mounts. OEM upper A-frame may be replaced using aftermarket upper A-frame (STEEL only). Upper A-frame mounts may be modified and moved for caster and camber adjustment, but must remain OEM material. Lower A-frame mounts and bolt holes on frame must be in OEM location, mount may be notched for clearance. All A-frame bushings may be aftermarket, but no bearing/heim type, OEM style ball joints only, may be tacked in. Sway bars (optional) and brackets must remain OEM.
REAR END
OEM 7.5 inch GM 10 bolt rear end (bracing optional), must remain stock width. . Housing end, from control arm mount out, may be modified with 3-inch tubing to accept 9” Ford axle. If Ford axles are used, rear end must remain minimum GM width or maximum 3 inches wider. Steel components only. OEM mounts on lower control arms must remain in OEM location on original 7.5 inch tube housing. Aftermarket axles, mini spools and C-clip eliminators allowed. Locked rear ends only, no torque dividing differentials allowed. No full or aluminum spools allowed. Pinion angle can not be changed. 9 inch Ford may be used with stock GM mounts. Again pinion angle must remain as stock.
BUMPERS/RUB RAILS
Steel only. Two bar front bumper and single bar rear bumper must be used on car at all times and welded or bolted securely. Must be maximum of 1.50 inch O.D. tubing, .095 inch wall thickness onfront and 1.75 inch tubing, .095 wall thickness on rear. Maximum 1.50 inch O.D. tubing, .095 inch wall thickness fuel cell protection bar required, must cover rear and extended past both sides of cell, may be welded to rear bumper. Rear bumper may be maximum 6 inches beyond rear deck. All bumpers and rub rails must be capped with no sharp edges. Single bar rub rail from front to rear wheel allowed on each side, no center supports allowed, maximum 1.50 inch O.D. tubing and .095 inch wall thickness, must be mounted to cage at front and rear of rub rail.
TIRES/WHEELS
Hoosier 7 groove sport mod tire or asphalt pull offs only. Pull offs must be used tires, no recaps. Wheels may not exceed 10 inches for pull0offs, 8 inches for all other.. Any offset allowed. External steel bead lock allowed on right rear & or right front only. One foam or plastic mud cap allowed on right rear only. Must use minimum 1 inch O.D. lug nuts and 0.625 inch studs are recommended. No wheel spacers allowed with OEM studs. Wheel adapters are treated as spacers and may be aluminum, maximum 1.50 inches thick. No bleeder valves.
BRAKES
Must be steel OEM, operative three wheel, drum or disc. Must maintain minimum OEM dimensions for hubs/rotors or calipers, cannot be lightened. Bolt pattern may be changed, 0.625 inch studs allowed. Single or dual aftermarket master cylinders allowed. Driver adjustable dual pedal brake bias allowed. Additional proportioning valve (in-line type) allowed, must be out of driver reach. Rear rotors may be aftermarket, minimum 0.810 inch thickness, maximum 12-inch O.D. Vented rotors only, no scalloped, single phase or drilled rotors allowed. Rear caliper brackets must be welded to housing.
FUEL SYSTEM
Racing fuel cell required, maximum 22 gallon capacity, must be in minimum 18 gauge steel container. Must be securely mounted, with minimum 2 steel straps around entire cell, between frame rails in trunk area only. Fuel cell vents, including cap vent, must have check valves. No part of cell can be lower than protective tubing. OEM mounted, mechanical push rod fuel pumps only. No regulators, bypass fuel systems, pressurized, or return lines allowed.
CARBURETOR
Holley (unaltered) #4412 or #0-80583-1, 500 cfm two barrel may be used on any engine. OEM GM Quadra jet or two barrel may be used on Chevy. OEM Motorcraft four or two barrel may be used on Ford. OEM Carter or AFB four or two barrel may be used on Chrysler. OEM carburetors must remain unaltered, circle track floats may be installed. No other carburetors allowed. Adapter/spacer allowed, maximum 1.250 inches thick, including gaskets. No driver compartment adjustable carburetors or spacers. Limit of one fuel filter. No cool cans. Any air cleaner allowed.
FUEL
Gasoline only. Racing fuel allowed. No performance enhancing additives or scented additives. Fuel must pass both dialectric meter and chemical tests. Fuel sample may be taken from any car at any time.
MINIMUM WEIGHT
Minimum weight limit of 2350 pounds after race with driver in car. Weights must not be used in driver compartments or outside body. All weights must be securely mounted with at least two, .5 inch bolts, painted white with car number on it. No titanium, magnesium, stainless steel or carbon fiber components. Solid steel fasteners only.
BATTERY/STARTER
One 12-volt battery only. Must be shielded and securely mounted. Aftermarket starter allowed, must bolt in OEM location. Must have capability of starting without being pushed or pulled. Must leave initial staging area on demand, unaided or go to rear of that race.
GAUGES/ELECTRONICS
OEM style ignitions only. GM: HEI distributor (must remain one unit) or point distributor allowed. Ford/Chrysler: may use OEM ignition, including OEM boxes, or HEI distributor. Any module may be used that fits inside the distributor with no alteration. Vacuum advance may be removed and pick up coil locked. No external coils allowed, unless using point distributor. No GM or aftermarket ignition boxes allowed. No electronic traction control devices.
TRANSMISSION/DRIVE SHAFT
Only OEM production transmissions allowed. No aftermarket transmissions allowed. No ‘in and out’ boxes or quick change devices allowed. With engine running and car in a still position, must be able to engage car in gear and move forward, then backward. Functioning shift levers must be in OEM location. Transmission fluid coolers allowed. Flywheel, flex plate and converter must be steel.
1. Automatic: Any OEM automatic transmission allowed. Must use functioning, minimum 10 inch diameter steel torque converter. No direct drives, couplers, valved pumps or bleeder style valve bodies. Must have at least one forward gear and one reverse gear, gears must function. Must have an approved scatter shield constructed of .125 inch by 3 inch steel, 270 degrees around top of flex plate. GM automatic must be used with GM engine, may be used with Ford or Chrysler engine. Stall converters allowed. Steel OEM style flex plate only, must be bolted directly to end of crankshaft.
2. Manual: 3, 4 or 5 speed OEM manual transmission only. All gears must function. Must have functioning 10.5 inch minimum diameter clutch and pressure plate bolted directly to steel flywheel. These components must rotate, consistent with engine rpm, while car is in any gear. Must use explosion proof steel bell housing 180 degrees around top of clutch and flywheel. No mini clutches or couplers. Minimum 9 inch diameter Ford clutch allowed. Hydraulic slave cylinder/throw out bearing allowed.
3. Drive Shaft: Minimum 2 inch diameter, white, steel drive shaft only. Steel slip yokes only. 360 degree drive shaft loop required, constructed of at least 0.125 inch by 2 inch steel or 1 inch tubing, mounted 6 inches back from front U-joint.
POWER TRAIN
Rear of engine (bell housing flange) must be mounted at least 70 inches forward from centerline of rear axle. Minimum 11 inch engine height from ground to center of crankshaft. One radiator allowed, steel or aluminum, 27 inches by 19 inches maximum in size, must be mounted in front of engine. Racing cap and electric fans allowed. No sprinklers. Catch can required. Power steering pump and reservoir must remain one unit and mount in front of engine. Side engine mounts (OEM or 45 degree style) must be steel, aluminum mid-plate allowed.
ENGINE SPECIFICATIONS
Must use OEM cast iron, American made V-8 small block engines only. No bowtie, SVO or W-2 components allowed. All engines must be able to be used in conventional passenger car without alterations. External engine casting and threaded holes cannot be altered. No aluminum, titanium or carbon fiber components allowed. BLOCK: GM (Chevy only): 283, 302, 305, 307, 327, 350. Ford: 260, 289, 302, 351. Chrysler: 273, 318, 340, 360, no hemis. Maximum cubic inch limits: GM 364 c.i., Ford 360 c.i., Chrysler 370 c.i., no tolerance. No 400 or larger cubic inch parts allowed. Flat top or dished cast pistons only, Chevy must use 4 valve relief. No gas ported or floated pistons. 3.48 inch maximum GM stroke. Maximum 175lbs per cylinder compression, no tolerance. Compression checked with one spark plug removed, turned five engine revolutions. Engines may be balanced and block decked. Oil filter system must remain OEM. ‘Wet’ sump oiling system only. No accustamps. OEM rods. Chevy must use maximum 5.7 inch rod. Steel or cast OEM crankshafts only. No splayed main caps. Racing oil pans allowed. One inch inspection hole recommended in pan – no obstructions to crank and rods. If obstructions are present, must remove pan for inspection. Engine bolts may be aftermarket. Fluid dampener balancer not allowed. No roller bearings allowed. INTAKE: Unaltered, approved OEM cast iron low rise, two or four barrel; or unaltered Weiand aluminum-‘IMCA stamped’ Chevrolet #7547-1, Ford 302 #7515, 351, Windsor #8023, 351 Cleveland #7516, Chrysler #7545. No porting, polishing or alterations of any kind, including cooling lines or plenum alterations to ANY intake. No OEM hi-rise, marine or bowtie intakes. Ford may use OEM aluminum intake, no under air or hi rise. All intakes must have unobstructed 0.250 inch vacuum fitting. Belt driven, OEM style water pumps only, no aluminum water pumps on Chevy engine. CAMSHAFT: Non roller hydraulic cam/lifters only. Hydraulic lifters must remain unaltered OEM. No maximum cam lift. Must pull 12 inches of vacuum at 1200 rpms. Vacuum to be pulled at intake vacuum fitting, not carburetor. A fitting for checking vacuum in intake manifold is mandatory! NO FITTING-NO TEST, YOU WILL BE DISQUALIFIED. No alterations of any kind may be made at time of tech. Track equipment being used for tech is final. Lifter bores cannot be altered. Must be chain driven, no gear/belt drives. CYLINDER HEADS: Must use one of the following OEM GM cylinder heads (last 3 digits) 126, 185, 336, 441, 445, 487, 493, 598, 625, 862, 882, 920, 993, 997, with valve no larger than 1.94 inch intake and 1.50 inch exhaust. Any cast iron OEM Ford and Chrysler heads allowed with valves no larger than 2.04 inch intake and 1.70 inch exhaust. Headers must bolt directly to head with correct numbers. No vortec, bowtie, SVO, W-2 or aftermarket heads allowed. May use Engine Quest (EQ) Stock Replacement (SR) cylinder head, part number CH3501, head must remain as produced, valve sizes can not be changed. No porting, polishing or unapproved alterations to ANY cylinder head.
No porting, polishing or altering heads of any kind. Flat milling allowed. Guide plates, screw in studs (0.375 inch max) and polylocks allowed, no stud girdles. Stamped steel, OEM style, stud mounted (0.375 inch max) rocker arms only. Chrysler may use OEM rocker arm bars. Any length push rods allowed. OEM diameter springs must match heads.
DEMOLITION DERBY RULES (back to top)
1. All drivers must know and obey these rules for safety or they will be disqualified.
2. Drivers must be 18 years old or older and have a valid drivers license.
3. Drivers must fill out and sign track release form to participate.
4. SAFETY EQUIPMENT: Seat belts and shoulder harnesses are required, will be tested, and vworn, an approved crash helmet will be worn. A 2 1/2 lb. Dry chemical fire extinguisher at the right of the driver is mandatory.
5. 1 rearend may be welded.
6. American passenger cars and standard station wagons only (Non commercial, American). No jeeps, pickups, or ambulances. No cutting of any body parts, however if car has prior damage, necessary cutting will be allowed. No reinforcing of frame or body parts, except for the drivers door. Radiator must remain in original position. All Equipment must be standard. No studded snow tires. No body alteration, unless to trim for tire clearance. No mud tires, No water in tires. Air only
7. IMPORTANT: glass and mirrors inside or out, must be removed, (glass not allowed in door panels or trunk). All lenses, chrome, body molding must be removed and loose parts inside car and trunk removed. HEADLINERS AND INSIDE DOOR PANELS MUST BE REMOVED. THESE RULES WILL BE STRICTLY ENFORCED.
8. The drivers door must be reinforced. Reinforcement material cannot extend more than 2 inches beyond the outer limits of the upright door posts. Door can be completely welded. Must have at least one bar inside door not to exceed 6” in front and beyond interior edge of door.
9. Car must have a number on BOTH FRONT DOORS and be at least twelve inches in height.
10. Original gas tanks MUST BE REMOVED; A SUPPLEMENTAL TANK (maximum 6 gallon capacity) shall be placed in the rear passenger area, and rigidly secured and covered.
11. No reserve water tanks.
12. Battery MUST be removed and be secured inside of the car on the floor, in front of the passenger seat and covered. Two batteries are NOT allowed.
13. Engines must be in original location and must have factory motor and mounts. Engines may be chained down.
14. The cars engine hood MUST be chained and MUST be able to be opened for inspection. Two eight inch fire holes are required in hood, one on each side.
15. Door and trunk lids may be chained or welded shut but not reinforced. If trunk is permanently shut, an inspection hole of 12 to 15 inches is required. No more than four one inch welds may be used per door or trunk ( a chain may be used to secure but not to reinforce).
16. Either or any starting fluid may not be used. If found in the car during or after race, car, driver and crew are disqualified.
17. You must be making contact. Anyone playing possum will be disqualified. If you are still for 60 seconds.. You are out! No contact for 60 seconds… You are out! If your is dead, STAY IN YOUR CAR!
18. Everyone stops immediately for a red flag.
FRONT WHEEL DRIVE BOMBERS (to the top)
1. BODIES; Domestic or foreign mid-size or smaller cars. No Hondas, Accuras, or Saturns. No large cadillacs, Buicks, Oldsmobiles, etc. Doors cannot be cut out, except for left side door bars only.No body cutting of any kind. Fenders may be trimmed for tire clearance only. Front and rear wheel wells may be removed. Stock dash. No radios or mirrors. Roof, doors, and center post, cannot be altered in any way Rear wings , (spoilers), are allowed but may not exceed 6 inches in height, and may not extend past top edge of body. No skirting of any kind. No side trim. No open hoods. No added weight.
2. SEATS AND BELTS;. Mandatory!!!! Aluminum racing seat, new 5 point seat belts, and window nets.
3. ROLL CAGE; Must be made of a front and rear loop with an x in back loop. Must be mounted to frame by angle or tubing from front to rear hump and must have 3 left side door bars and 1 right side door bars. Must have 1 horizontal bar from side to side of front legs. Must have at least a 14 gauge plate covering drivers side door bars. Top four corners of cage must have gussets on all angles.
4. WINDSHIELD; Screen covering windshield area is highly recommended or 5 bars from center to left side of cage post.
5. ENGINE; 4 cylinder or v-6! No sho-svo, v-tec or any high performance parts. No turbos, no aftermarket chips, or altering the stock ones. Track can claim any computer box at any time for $75.00. Take note- ANYONE WITH OVERPOWERING HORSEPOWER WILL BE DQ’D. THIS IS A BEGINNER CLASS FOR FUN!!!
6. FUEL; fuel injection or carburetion-STOCK.
7. BATTERY; Should be mounted in trunk area. Must be securely mounted.
8. FUEL TANK; Stock can be used if left in stock location. FUEL CELL HIGHLY RECOMMENDED if at all possible. Engine horsepower will be handicapped by weight at the scales. (If you are too fast we may require you to add weight to car.)
9. BUMPERS; Stock bumpers or tube. Tube bumpers must be built of maximum 1.5 inch O.D, .120 thickness. Tube cannot be longer than the center of tire to center of tire. Ends must be capped with no sharp edges. Bumper may have loops no taller than 16 inches and cannot extend past the frame horns Bumper can be attached to frame with no larger than ½ inch flat plate extending no further than 12 inches behind core support.
10. TRANSMISSION; Stock OEM standard or automatics. No performance clutches or flywheels.
11. MODIFICATIONS; None allowed.
12. EXHAUST; Stock exhaust must run past driver. No muffler required.
13. SAFETY EQUIPMENT; Complete fire suit with gloves and SA approved full face helment.
14. TIRES: DOT tires only. OEM steel or aluminum wheels only. Maximum width 55 series tires, (must fit 8.5 inch hoop). No mud tires but grooving is allowed. Right front must have a minimum of 40 pounds of air pressure.
15. IF IT DOES NOT SAY YOU CAN YOU CANNOT. CALL GEORGE IF YOU HAVE QUESTIONS. .
RULE BOOK DISCLAIMER; The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and, by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESSED OR IMPLIED WARRANTY OR SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND/OR REGULATIONS. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator or official.
The race director shall be empowered to permit reasonable and appropriate deviations from any of the specifications herein or impose any further restrictions that in his opinion do not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or deviation of these rules is left to the discretion of the officials. Their decision is final. THE MANAGEMENT OF OKLAHOMA SPORTS PARK (OSP) (ADA, OKLAHOMA) The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and, by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESSED OR IMPLIED WARRANTY OR SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND/OR REGULATIONS. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator or official.
The race director shall be empowered to permit reasonable and appropriate deviations from any of the specifications herein or impose any further restrictions that in his opinion do not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or deviation of these rules is left to the discretion of the officials. Their decision is final.
IF IT DOESN’T SAY YOU CAN, THEN YOU CAN’T!!!!!!
