Pro/Street Stock
2010 Rules, Regulations & Car Specifications
CAR & BODY:
1. Must be rear wheel drive, front engine, American made passenger cars. Any type steel or aluminum bodies that fit wheel base.
2. Minimum wheel base 108 inches.
3. Minimum weight 3000 pounds with driver. Cars may be weighed at any time. Fluid or parts lost during a race may not be added to make weight. All weights must be doubled nut or welded. At least two bolts, double nut is mandatory. All weights must be painted white and displayed car number.
4. ALL cars must be stock. Frame and body must be stock. NO interchanging components. Original forging and casting marks cannot be removed, altered or covered.
5. Car must have 4” minimum ground clearance.
6. All glass and flammable material must be removed. Cover headlight and tail light holes with sheet metal. Plastic trim, chrome trim and door handles must be removed. No rearview mirrors. No transmitting or listing devices in car.
7. Door must be welded 12” front and rear or bolted using backing plates and a minimum of four bolts per side.
8. 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”.
9. May run 5 inch hood scoop and a 8 inch spoiler. Spoiler sides can be from 8 inch and taper to l inch. This means the spoiler must be 8” from bottom to top maximum. Side boards may be 8” tall tapered to a point at 12” with a maximum height of 1” at the small end of taper.
10. Firewall optional.
11. The drivers compartment shall be totally protected with firewalls, front, rear, and sides and floor boards, aluminum or sheet metal firewalls. Front, rear and sides are 0.40 minimum. Floorboards are 0.63 minimum. The driver’s compartment shall prevent any fluids, parts or flames from coming in contact with driver.
BUMPERS:
1. Bumpers must be mounted in stock location. Front bumper can be one 2” O.D. pipe or stock. May not exceed 56” in width and 8” from end of bumper must angle 10 degrees. Rear bumper may not exceed 54” in width and must be capped. Wrecker loops are mandatory front and rear. Nerf bars are optional. If used may be no larger than 1” x 2” square tubing cut and capped at 45 degrees. NO SHARP ENDS OR EDGES. All ends must be capped front, rear and sides.
SUSPENSION:
1. Suspension parts must remain absolutely stock for make and model of car. Adjustable spring spacers may be used. Stock type spring only in stock locations. May be heated, cut or changed. No coil-overs, load levers or air-type shocks. Shocks may be mounted in any position.
2. Drive shaft must be painted white. Loop mandatory 6” behind front yoke.
3. Any type bushing may be used. Upper A frame mounts may be moved. Stock mounts or flat metal may be used.
4. Any type upper control arm but no heim ends.
5. Weight jacks are legal.
STEERING:
1. Stock steering box must be in original stock location. Steering quickner allowed. Must be gear type self-contained unit. No rigid one-piece rod to steering wheel. No center steering. Steering wheel and driver must be on the LEFT side of drive shaft hump. NO modifications of hump and NO rear driver seat. Any type power steering allowed.
TIRES AND WHEELS:
1. STEEL WHEELS ONLY. Wagon wheels or rally wheels not to exceed 10” wide.
2. One-inch lug nuts required.
3. Asphalt stock car type tires only. May not exceed 14 ¼” wide. Will be checked with hoop.
4. No radials or re-caps allowed.
5. No hubcaps or wheel covers. Foam wheel inserts may be used.
6. No wheel weights (I.E. balancing weights.)
7. Hoosier 500 tire - 10” x 27-15 (tire number)
8. Bead lock legal on all wheels/corners.
SAFETY:
1. Full face auto racing helmets meeting/exceeding the Snell 2000 specification required, and must be worn at all times car is on track and must accompany vehicle at time of inspection. Fire suits, shoes, gloves and neck collars must be worn at all times during racing.
2. All cars will be equipped with a full size window 16 x 20 window net. Window net must be in use at all times.
3. 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 2000. Date tag and stamp is required.
4. With driver strapped in car minimum 2” head clearance required from top of roll cage to top of driver’s head is mandatory.
5. Two throttle return springs and a steel top strap on throttle is mandatory.
6. An onboard fire extinguisher is mandatory.
7. Bucket seats are mandatory and must be factory manufactured.
8. Shock resistant roll cage padding on all bars that driver’s head, legs, and arms may come in contact with while strapped in seat is required. A padded, functional headrest in line with the center of the driver’s head is mandatory.
ROLL CAGE/BAR:
1. Four-post roll cage with diagonal brace behind driver is mandatory. Braces must remain within driver’s compartment. Cage must be 1 ¾” O.D. x .095” wall thickness mild steel tubing.
2. Must have four-bar door protectors on both sides.
3. Horizontal bar between front vertical bars and under dash required.
4. Engine hoop to incorporate leg brace tube to protect driver.
5. Cage must be welded to frame in at least six places.
6. Roof hoop within 33” minimum, from front to main hoop 32” minimum.
7. Front fenders, quarter panels and front nose piece. One 1 inch bar for bracing ONLY!
8. Maximum angle of rear roll bar is 20 degrees. At least one bar from rear loop to front halo is mandatory.
FUEL:
1. Fuel cell is mandatory. Must be securely and safely mounted. No lower than the bottom of the frame rail.
2. Gasoline or methanol. NO performance additives.
RADIATOR:
Factory radiator core supports optional. When fabricated support is used, maximum tubing size of 1.5”, 12 gauge may be used. Tubing may not extend beyond frame rail.
TRANSMISSION:
Transmission must have at least one forward and reverse gear, plus a neutral position and must be able to be shifted by driver. All cars must join line-up unaided.
AGE REQUIREMENT:
At his sole discretion, the Race Track Promoter has the authority to permit/or not permit a driver 16 years or younger to participate in any class.
NUMBERS:
All numbers must be at least 14 inches tall. Numbers are limited to 3 digits and letters are not permitted. Cars are to have 18-inch or larger number on the roof for scoring. Please keep numbers clean so that they may be visible to scorers.
FUEL PUMP:
1. Fuel delivery system must be stock mechanical type fuel pump. Belt drive and by-pass are allowed.
2. Fuel line cannot pass through driver’s compartment – no vinyl or plastic line. Steel braid recommended.
CARBURETOR:
Any carburetor can be run except Predator. Two inch spacer maximum.
REAR END:
Any stock passenger car or ½-ton pickup rear end allowed and must be mounted
in stock locations. Rear end units may be locked. Quick-changes are allowed. Only steel axle housings are allowed. Rear end must be mounted underneath rear frame rails. No limited slip or rachet rear ends allowed. One drive shaft loop mandatory. 360 degree wrap around not more that 6" from front of drive shaft. Drive shaft must be painted white. Aluminum drive shaft may be used. May not be floated.
BRAKES:
Three wheel brakes mandatory, in working condition. Brake valve may be used and can be in the driver compartment. Right front brake optional. May be checked at any time.
KILL SWITCH:
Must have kill switch. Must be highly visible on dash.
BATTERY:
Battery may be relocated but must be securely mounted and covered with sheet rubber. Must be able to start car at all times.
DISTRIBUTOR:
Battery type ignition only. No magnetos or crank triggered. Only one complete ignition system may be installed in the car. No backup system or backup components may be added.
.
MUFFLERS:
None required.
HEADERS:
Any headers okay.
ENGINE:
Any V-8 cast iron automotive engine block. No aluminum.
1. Maximum displacement is 368 CI.
2. Brodix spec head or steel head. Must be OEM stock steel heads and 23 degree valve single only. No aluminum blocks. However, any cast iron block is allowed. (continued below)
ALUMINUM SPEC HEAD RULE:
1. All spec heads will be supplied with CNC bowl blend and intake matching.
2. No grinding or blending of CNC work is allowed.
3. No grinding or polishing of any kind is allowed anywhere on the castings.
4. No use of any substance that may change or alter the shape or size of ports or combustion chambers is allowed.
5. Valve seats and guides are to remain as manufactured and in their cast position, valve must stay on valve seat and cannot touch aluminum.
6. Valve angles are to remain as manufactured. The original seat center locations as provided by the head manufacturer may not be altered.
7. No tapering or reshaping of valve guides will be allowed.
8. No minimum combustion chamber volume.
9. Spec cylinder head serial numbers must remain on the head and may not be defaced or altered.
10. No welding modifications are allowed to the original castings. Brodix will provide a repair service where we register and keep track or repairs if you desire. (Chevrolet part number SP CH OKC) (Mopar part number SP MO OKC) (Ford part number SP FD OKC)
11. Valve stem may be no smaller than 11/32.
12. Any steel head such as Dart EQ World Product is allowed. Valves must remain stock value angle. This means Chevy 23 degrees-Mopar 18 degrees-Ford 20 degrees.
13. Valve sizes on all heads maximum 208 intake/exhaust 1.60.
14. Only heads may be ported or polished are stock type heads such as 461 Chevy or 462 - 291 Vortex.
15. IF YOU RUN ALUMINUM HEADS YOU MUST RUN 25 LBS. IN FRONT OF MID-PLATE.
ENGINE CONTINUED:
3. Domed piston not allowed. Flat top pistons or stock type dished pistons ONLY
4 Only steel rods can be used.
5. Any steel crankshaft can be used. No titanium engine parts allowed, except valve spring retainers.
6. Camshaft and lifters must be of a flat tappet design only. Roller cams, lifters, mushroom cams/lifters are not allowed. Gear drives are allowed.
7. Any type of American manufactured carburetor, not in exceed four barrels allowed. No Preditors, no solenoids allowed. No vacuum leaks allowed between top of carb and intake valves. All air fuel delivery must be through carburetor. No injection type fuel delivery systems allowed.
8. INTAKE MANIFOLD: OEM or stock type cast aluminum allowed. May be ported only to match heads. One, one-inch spacer may be used between carburetor and intake manifolds. No welding, grinding, cutting, porting, polishing anywhere on intake EXCEPT for one inch maximum inside intake runners to match heads.
9. No fuel injection, nitrous oxide, super or turbo chargers - no water injection systems. No pressure systems.
10. Only pan type oil pumps allowed. No dry sump or external pumps, unless stock production. Oil pan style is optional. A one-0 inch diameter inspection hole in upper side of pan above oil line and windage tray is recommended. If car is protested or inspected and pan has no inspection hole, pan must be pulled at track..
11. All valves and plug holes must remain in stock location.
12. No automatic cam timing devices.
13. Water pumps are limited to stock mount, belt driven type.
14. Fan shroud enclosing fan is required if fan is used.
15. Engine may set back no farther than center of number one spark plug even with center of front ball joint. (1" plus or minus)
16. Any starter can be used including rear mounted starters with special bell housing and small flywheel.
17. All pumps must be mounted on front of engine.
18. NO TRACTION DEVICES.
19. After three A feature wins, engine will be puffed.
If you have any questions call Mark Brill at 405-769-6927. DON’T GUESS!!!
IF IT DOESN’T SAY YOU CAN DO IT IN THE RULES?YOU CAN’T!!!
