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General Rules
Truck Classes
Tractor Classes


  1. Maximum weight for truck and driver is 6200 lbs.
  2. Engine must be naturally aspirated with a single carb and any intake manifold except a tunnel ram. Aluminum head and blocks are not allowed. Maximum cubic inches is 470. Any engine over 470 c.i. will use a 25 1/2" hitch height instead of 26".
  3. Exhaust system must run down and back or up through the hood. Maximum hood cutout clearance will be 2" around the air cleaner. Adequate clearance around headers will be allowed to permit opening the hood. If you burn alcohol you must run with the headers up! You can also run exhaust spacers.
  4. High stall torque convertors and safety approved clutches will be allowed. Any ignition will be allowed.
  5. Maximum wheelbase will be 134". Body sheet metal must conform to wheelbase. No fiberglass bodies.
  6. Hitch height is 26" and length is no less than 36% of the wheelbase before, during, and after pull.
  7. Tires maximum 31.5 x 15 x 15 terra tires or bar tires. No duals, chains, or Dick Cepeks allowed. Street legal tires may run in this class max. 16.5 x 12.5 x 33. Outside corner to outside corner tread (measure).
  8. Rear of block van be no more forward than 12" from the center of the front axle tube.
  9. Engine must be shielded at least .060" thickness. Height to extend to botton of cylinder head and must cover the entire length of the engine. No unnecessary holes in the firewall. Any engine driven fan must be shrouded 360 degrees.
  10. Drive train will consist of the following: any front axle or any rear axle, no planetary gears allowed. Must have OEM frame rails.
  11. Engine does not have to conform with body/chassis.
  12. Any aftermarket transmissions and transfer casses allowed.
  13. Weight box maximum width 84", not to exceed 60" forward from top center position of front axle tube.
  14. Scattershield required with block saver and all bolts in place. Automatics must use safety blankets.
  15. All trucks equipped with a harmonic balancer shall be solid steel or shrouded with a 1/4" steel shield 1" wide, 360 degrees around the balancer, waterpump may be used. Shields must have straps 1/4" x 1" that will keep the harmonic balancer from working forward.
  16. Kill switch required. Must break or ground ignition system, must also bread current to electric fuel pump. 2" diameter ring, located above the hitch.
  17. Fuel tanks must be in open area.
  18. Three loops per driveshaft. Two piece shaft with carrier must have six loops.
  19. 360 degrees drive shaft loops must be made of a min. 3/4" wide x 1/4" thick steel. Must be positioned no less than 6" and no more than 12" from u-joint. Maximum horiz. clearance 2" and maximum vert. clearance 8" both ways.
  20. No cables, chains, or cast metal for loops.
  21. Vehicles with a shaft between transmission and transfer case must be fully enclosed.
  22. All driveling u-joints are to be enclosed in a 360 degree shield using a min thickness 1/4" steel or 5'16" alum.
  23. All u-joint covers must must be a min of 6" wide and a mmin 2" clearance from u-joint. Shield should be positioned to prevent any broken parts from excaping and that the u-joint should not be visibile from the side, top, or bottom.
  24. Suspension blocks or rigid suspension allowed only on rear.
  25. Vehicles must have steel flywheels or flex plates.
  26. Reverse light required at rear of vehicle above the hitch and in the frivers compartment both activated by the shift lever.
  27. Trucks must have safety glass or plexiglass in windshield and rear window.
  28. All general rules apply.

    Any Questions you can E-mail us at
    Created by Mark A. Owen,
    Snail Mail Us At: Illiana Pullers Association P.O.Box 217 Watseka Il. 60970
    Copyright 2000
    Last Updated 17 August 2001