Factory Stock Rules
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!
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GENERAL
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!
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BODY
A. Aftermarket 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.
2. Inner door, hood and top bracing may be removed.
3. Car must have 4” minimum ground clearance.
4. Car may be tubbed but must be made of steel. 14 gauge minimum thickness.
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 plate.
D. Stock dash may be replaced with sheet metal in stock location, no sharp edges.
E. 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 extend past the body. No sharp edges!. 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.
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CHASSIS/SUSPENSION
A. Springs must remain in stock location for make and model of car. No lumber, chains, etc. may be used to alter stock suspension. Stock-type springs (racing springs may be used) only in stock location may be heated, cut or changed. Shocks must remain in stock location. No Schrader type air up shocks.. Chrysler power may be used in any chassis meeting rules. Aftermarket non adjustable upper A-frames may be used. A frame towers may be moved. Stock lower A frames. Must match frame. See chart for measurements.
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. No gun drilled axles.
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. Mini clutch is allowed with explosion proof bell housing. Bert or Brenn may be used but car will be penalized 100 pounds at the scales.
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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 not to exceed 6 inches in length. World Products Sir torque part # 4266 or RHS, Pro Torcher, Part # 12403 or #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. 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.: 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.
K. Carburetor. Holley 500 cfm only. Maximum 1 inch adapter. Must pass go no go check.
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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.)
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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 or E-85, 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.
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WEIGHT
Minimum weight, including driver, is 3200 pounds. 3300 pounds with
Bert or Brenn transmission. 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) 1/2” 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.
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!
------------------------------
GENERAL
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. Aftermarket 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.
2. Inner door, hood and top bracing may be removed.
3. Car must have 4” minimum ground clearance.
4. Car may be tubbed but must be made of steel. 14 gauge minimum thickness.
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 plate.
D. Stock dash may be replaced with sheet metal in stock location, no sharp edges.
E. 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 extend past the body. No sharp edges!. 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. Springs must remain in stock location for make and model of car. No lumber, chains, etc. may be used to alter stock suspension. Stock-type springs (racing springs may be used) only in stock location may be heated, cut or changed. Shocks must remain in stock location. No Schrader type air up shocks.. Chrysler power may be used in any chassis meeting rules. Aftermarket non adjustable upper A-frames may be used. A frame towers may be moved. Stock lower A frames. Must match frame. See chart for measurements.
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. No gun drilled axles.
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. Mini clutch is allowed with explosion proof bell housing. Bert or Brenn may be used but car will be penalized 100 pounds at the scales.
------------------------------------------------------------
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 not to exceed 6 inches in length. World Products Sir torque part # 4266 or RHS, Pro Torcher, Part # 12403 or #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. 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.: 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.
K. Carburetor. Holley 500 cfm only. Maximum 1 inch adapter. Must pass go no go check.
------------------------------------------------------------
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 or E-85, 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. 3300 pounds with
Bert or Brenn transmission. 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) 1/2” 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.
