2007 EXECUTIVE

PHOTO GALLERY

RULE BOOK

Stock  / Super Stock  / 4 x 4 Modified  / 2 Wheel Drive Modified  / 
Single Engine Modified  / Pro Stock  / Multi Engine  / ProStreet Diesel / Mini Mods /

  Circuit 4x4 Trucks

Class Reps – Susan & Russell Simpson

Purse, minimum 6 trucks for a full purse of $450.00

Weight not to exceed 5,500 lbs

Drawbar Height 22 inches

1.   All 4 x 4 Stock trucks must be naturally aspirated with cast iron intake and exhaust manifolds, single carburetor, no gas fuel injection.  Diesel 4 x 4 trucks (Chev-Ford-Dodge) must have factory turbo or system factory injectors.  No water injection allowed.  No alcohol is allowed in the fuel system.

2.   Mufflers must be attached.

3.   All General Track Rules will apply.

4.   Hitch point is to be the rearmost point of the truck, rigid in all directions and a maximum of 22 inches from the top of the hitching device to the ground.  No part of hitching device to exceed the center of the rear axle.

5.   No air shocks or blocks are allowed to make truck suspension rigid (air shocks not to exceed 30 PSI).

6.   4 x 4 Stock trucks will weigh no more than 5,500 lbs.  Added weight may not be mounted forward of stock positioned bumper and/or grill.  No weight bars or snowplow harness allowed.  Weights must be secure and not in cab.

7.   Stock truck suspension must move.  No lateral bars allowed.

8.   Tire size – 31 x 10.5 maximum and stamped DOT approved.

9.   Boxes will be stock in appearance and must have full floor.  No complete fiberglass body.

10. Any changes or modifications of rules will be done with at least a quorum vote of the membership of the stock class members.

11. No truck may hook in two different divisions at the same event.

12. All trucks must have working brakes on all four wheels.

13. Maximum of 526 CID engine size.

14. All trucks competing in the Circuit Stock Class must comply with all Circuit Stock 4 x 4 rules.

15. No engine driven fans, electric fans and water pumps are allowed.

Safety Equipment Required

1.   Vehicles must have a SFI approved balancer or covered with ¼ inch steel shield, 1 inch wide, 360 degrees around a harmonic balancer no more than 1 inch away from the balancer.  Water pump may be used.  Harmonic balancer must be bolted on.

2.   All automotive type engines with bellhousings and clutch will run a full block plate, either a unit commercially available, or minimum 3/16-inch steel, or minimum ¼-inch aluminum with (6) 3/8-inch Grade # 5 bolts evenly spaced on the bottom of the bellhousing and a blanket for automatics, front to back or short blanket on bellhousing and 3/16 inch steel over body of transmission.

3.   Drive shaft loops on U joint next to housing minimum thickness ¼-inch or 3/8-inch aluminum. 

4.   Drivers must wear lap seat belt and a DOT approved helmet.

5.   Engine shields minimum 16 gauge 1/8-inch aluminum to cover the entire block that the frame doesn't cover.  (Diesel powered trucks may use ¼-inch rubber belting that must close off between frame and inner fender).

Automatic transmissions must be protected from the back of the block to the rear of the planitaries, 360 degrees.