Limited Late Model Rules

                                   

1.      Body: Must be made of steel, aluminum or fiberglass. The body must be completely and neatly painted. Car numbers of contrasting colors must appear on both doors and the roof of the car. Numbers must be at least 18-inches tall and 4-inches wide. The number on the roof must face the outside of the track. A 6 x 1-inch white number must be located on the upper right hand corner of the windshield. Nosepieces are required. Made for racing or aftermarket components are required. Full windshields and rear windows are required, must be made of Lexan only. Plexi-glass and glass is not allowed. The drivers’ compartment floor pan must be made of steel and welded in place. The drivers compartment must be made of steel and separate the driver from the engine compartment, trunk compartment, fuel cell, fuel lines and oil system. No flattened, square corner or 90 degree panels are allowed. Smooth round corners are required. A Rear spoiler is allowed, clear Lexan or Plexiglass only. See body design requirement sheet.  

2.      Brakes: Working four (4) wheel disc brakes are required. Proportioning valves are allowed. Brake floaters are not allowed.

3.      Carburetor: Stock 500 cfm Holley model 4412 with 1 11/16-inch maximum base only. Alterations to the choke horn, butterfly shaft and butterfly shaft removal only. A 1-inch spacer may be used. Air cleaners are mandatory. 4 x 14-inch maximum allowable and may protrude through the hood for clearance reasons only.

4.      Coolant: Water is the only coolant allowed.

5.      Clutch: Racing clutches are allowed. Cars not having a reduced diameter clutch assembly must have a steel safety-shield. Dry clutches only.

6.      Drive shaft: Must be painted white and have front and rear drive-shaft hoops made of steel strap. Chains are not allowed. Aluminum drive shafts are not allowed.

7.      Engines: 360 cubic inch maximum. Cast iron blocks and heads only. Aluminum heads are not allowed. 12.5 to 1 maximum compression ratio. Roller camshafts and roller lifters are not allowed. Roller rockers are allowed. Aluminum intakes are allowed. Ported/Altered heads are allowed. Dry sump oiling systems are not allowed. Accusump and single stage external pump system are allowed-must be covered to protect the driver.

8.      Engine Location: The forward most spark plug must be within 1-inch of the centerline of the adjacent ball-joint on all frames. The centerline of the crankshaft must have no less and 10 ½-inches of clearance from the ground.

9.      Exhaust: Headers are allowed. The exhaust system must be completely sealed and exit behind the driver for safety purposes. Mufflers are mandatory. Maximum allowable noise level is 100 decibel.

10. Fire extinguisher: Mandatory. A 5 lb. ABC type extinguisher securely mounted in easy reach of the driver and track officials.

11. Fire Suits: Mandatory. Must be in good/safe condition and worn during all events.

12. Frame: Minimum wheelbase of 101-inches. Frames must be complete fabricated of minimum 2 x 3-inch/.095 wall thickness tubing or have stock front sub-assembly.

13. Fuel: Pump gas only.

14. Fuel System: Fuel Cells are mandatory. Must be in a steel container mounted securely to the car frame. Fuel lines cannot pass through the driver’s compartment. The gas cap must be secured to the car by a chain. Electric fuel pumps are not allowed. Minimum of 8-inches of ground clearance.

15. Helmets: Mandatory. Must be Snell 95 approved and in good/safe working condition. Must be worn during all events.

16. Hoods: Must be securely fastened.

17. Ignition System: Battery operated systems only. Magnetos are not allowed.

18. Mirrors: Mirrors are not allowed.

19. Neck collars: Mandatory.

20. Radiators: Any type may be used. Nosepiece and hood may not be altered to fit radiator onto the car. The radiator must be mounted in front of the engine. A one (1) gallon overflow can securely mounted in the engine compartment is required.

21. Rear End: Quick change and floaters only.

22. Roll Cage: A full roll cage made of 1 ¾-inch diameter .095 wall thickness steel tubing is mandatory. Must be gusseted on all corners and braced front and rear. Four (4) sissy bars are required on the drivers’ side of the car with an 18 x 24 x 1/8-inch steel plate welded to it and to the roll cage for driver protection. Roll cage padding is mandatory on bars near the driver’s head.

23. Rub rails: Allowed. 1 x 1-inch maximum tubing only. Must be securely mounted to the body with carriage bolts. Must have capped and rounded ends. Kick outs are not allowed.

24. Seat: Steel Racing seats are mandatory. Must be securely mounted to the frame or roll cage.

25. Seat belts: A Five (5) point system is mandatory. Quick release lap belt securely mounted to the frame and roll cage is mandatory. Must be coded and dated. Maximum age of the belt system is 5 years old.

26. Shocks: One (1) shock per wheel. Racing and adjustable shocks are allowed.

27. Shock claim rule: $100.00 US currency per shock. Only drivers eligible to claim or being claimed are those competing and finishing the feature event. Claim must be made within five (5) minutes of the completion of the feature. Claim must be given to the Tech Inspector. Refusal to sell the shocks will forfeit all points and winnings for the night.

28. Starters: All cars must have a working starter at all times.

29. Suspension: Tubular upper A frames and rack and pinion steering is allowed. Cast iron or steel spindles only. Aluminum spindles are not allowed. Driver operated weight transferring devices are not allowed. One (steel) spring-loaded rear suspension device is allowed. Rubber suspension mounts are OK. Wide-five hubs and rims are allowed. Computer controlled and or hydraulic operated traction devices are not allowed.  Minimum of 5-inch diameter coil springs for the front, 4-inch for the rear. 

30. Tires: Hoosier Sportsman 27/8/15 or 26.5/8/15 in any combination only.

31. Transmission: Must have a minimum of two (2) working forward gears and one (1) working reverse gear. Quick-change transmissions are allowed. All other made for racing transmissions are not allowed.

32. Tow Hooks: Mandatory. Securely mounted on the front and rear of the car.

33. Weight:

a.      Stock front sub cars: 2850 lbs with the driver before the race.

b.     Coil-over front sub cars: 3000 lbs with the driver before the race

1. 30 lbs of weight must be securely mounted on both sides of the front frame between the bell housing and front motor mounts. Total of 60 lbs.

c.      Tube front suspension cars with stock lower control arms with 5-inch or 5 ½ -inch coil springs must secure 15 lbs of weight to each side of the front sub between the bell-housing and front motor mounts and weigh 2850.

d.     56% maximum left-side weight for all cars.

e.      All added weight must be painted white and mounted with ½ bolts.

f.       Whittemore Racing Club officials may adjust the weight of cars to even the competition if necessary.

34. Wheels: (8) Eight-inch maximum width made for racing wheels only.

35. Window nets: Approved driver side window net with a quick release mechanism securely mounted to the roll cage is mandatory.

 

                        Body Design Requirement Sheet

            A. Maximum height of back of rear quarter panels to ground                 37 inches

            B. Center of front hub to front spoiler/nose piece                                    43 inches

            C. Minimum ground clearance at the nose of the car                               3 inches

            D. Minimum roof height to ground (10-inches from back to front)      45 inches

            E. Center of rear hub to back of rear quarter panels                                 45 inches max

            F. Ground clearance immediately behind tires                                        6 inches min

            G. Minimum ground clearance at the rear of the quarter panels            8 inches

            H. Maximum height of rear spoiler to the ground                                    42 inches

            I.  Minimum height side window’s opening                                             14 inches

            J. Minimum width side window’s opening                                               22 inches

            K. Minimum Roof width                                                                              44 inches

            L. Maximum body width at the front and rear tires                                  78 inches

            M. Maximum rear deck and spoiler width                                                 72 inches

N. Maximum width of flat surface on the top of the body

 between the front windshield and rear post.                                            4 inches

            O. Maximum nose angle                                                                              30 degrees

           

 

Deck-lid: The top surface of the deck-lid must not be dished. The deck-lid height must be no lower than the top of the quarter panels.

Fenders: A minimum of ½ radius is required on the top of the fenders. No sharp 90-degree breaks allowed. The rear fender flap immediately behind the rear tire must gradually angle up from a minimum ground clearance of 6-inches to 8 inches at the rear of the car. The width of the fenders must gradually taper from their maximum width at the wheels to the rear of the car. Straight panels or abrupt kick-in just before the rear of the car is are not allowed.                                   

Rear Filler Panel: Mandatory. It must be made of a solid material. Minimum height of 15-inches x the body width. The filler panel must be vertical (perpendicular to the ground) mounted to the deck-lid and directly beneath the base of the spoiler.