Section 29 - PRO STOCK TRACTORS (PS)¶

Unless specifically outlined below in the class specific rules, the Tractor General Rules and the overall General rules outlined above will apply.

29.1 - General Rules¶

Component chassis is allowed in the Pro Stock Tractor class.
Pro Stock Tractors will compete at a maximum weight of 10,000 lbs.
Tractors that require tools for the removal of side shields must be equipped with an onboard fire control system. On board system nozzles must be in engine compartment.
Metal deflection shield between driver and engine from top of hood to top of torque tube or transmission housing or clutch housing from side shield to side shield. This also serves as a flash fire shield.

29.2 - Tires¶

Tire size allowed is 24.5 X 32 maximum. See General Tractor Rules for dimensions.

29.3 - Engine¶

No engine larger than 680 CID (plus 1%).
Billet steel and billet aluminum blocks are allowed.
May have only one (1) fuel injection pump.
Tractors are limited to one pressure stage and allowed one (1) air compressing device.
Tractors may use a steel plate, maximum of one (1) inch thick, between the block and the head.
Tractors are limited to two (2) valves per cylinder.
No intercoolers allowed.

29.4 - Turbocharger¶

The ONLY turbo allowed is the Wimer mandated Outlaw Pro Stock turbo with NO modifications to turbo.
Turbo must contain a seal that was installed by Wimer Fuel Injection and Turbo.
If a turbo is sent back to Wimer and Wimer determines that a modification has been made. The vehicle and competitor will receive a one-year plus 1 day suspension.
Wimer cross bolt mechanism is mandatory.

29.5 - Fuel & Water¶

VP Racing Fuel is the only fuel that is allowed for use in all pulling vehicles. VP TORQ DX fuel is allowed.
VGM water is the only water injected water that is allowed.
A \$50 fine will be assessed for lack of fuel and water test ports for all classes.
A \$50 fine will be assessed for any minor infractions of fuel or water quality.