1. Weight Classes are 11,000 and 11,500lbs

2. RPM Limit is restricted to 2800RPM with 1% tolerance.

2A.  All tractors will be equipped with an IAMO approved RPM sensor and telemetry with the new for 2008 female plug.

3. Fuel Injection Pumps will be stock appearng for that make and model.       ABSOLUTELY NO "P" PUMPS ALLOWED

    a. Roosamaster max at .450 head

    b. Ambac model 100 Max at 13MM

    c. Simms pump max at 11.5MM

    d. Bosch "A" max at 10MM

3A. No water injection or injection of any alternative fuels.

4. Turbocharger limitations;  One turbo no larger than or equivalent to 3LM466 (2.33 Inlet x 2.75 Outlet).  NO Slots, NO Slugs(permanent or removable) or Reducers.

5. Cubic Inch Limitations;  Any tractor may run stock cubic inch for Make and Model of tractor being pulled.  Any tractor running a stock engine smaller than 466 may "power-up" to a 466 cubic inch power-plant of the same manufacturer.  Note: The tractor named Lil' Ruckus owned and or operated by Adam Taylor, Corwin Cox, and John Duff is "Grandfathered" as a 970 Case tractor with a 504 cubic inch power-plant.  This tractor is to be no larger than 504 Cubic inches.

5A. No inter-coolers allowed, no aluminum or billet heads, and no aftermarket heads.

5B. Tractor must run factory intake and exhaust manifolds. No exhaust headers. No spacers between manifolds and cylinder heads.  Note:  Tractors that were non-turbocharged in factory form may build manifolds for turbocharging if no factory parts are available for that series of engine.

5C. No deck plates between cylinder heads and blocks.

6. Tire Size not to exceed 20.8x38

6A. No cut tires allowed.

6B. 18" rim width maximum.

7.  All Tractors must have PTO.

8.  All tractors must be equipped with wheelie bars and air shutter kills if diesel powered.  Full Electrical kill must be provided if tractor has spark ignition.  For specifications see Hot Farm Rules.

8A.  It is highly recommended that tractors have roll over protection of some design. 
See Safety Rules for specifications.

9.  Exhaust will have 2  5/16" bolts as close to the elbow as possible at a 90 degree angle from each other and no more than two inches apart.

10.  Drawbar will not be over 20" from ground at point of pull.  The point of pull will be a minimum of 18" from center line of rear axle.  No pulling from 2 or 3 points allowed.

11.  All tractors running radiator fan blade must have side shields.

12.  All tractors may move to Hot Farm and pull if tractor meets the weight and safety requirements.