NATURAL ASPIRATED MINI

Tractor must weigh no more than 1850lbs. with driver. Is limited to one V8 motor with carburetor or injectors on alcohol or gas, no forced induction or nitro allowed. Wheel base limited to 8' feet and no wider than 6'. Rear tires are limited to 18.4" x 16.1" maximum with a rim size of 16.1 inches. All general safety rules apply.

SUPER MODIFIED BLOWN MINI

Tractor must weigh no more than 2000lbs. with driver. Is limited to one V8 motor with a 572 c.i. limit. Nitrous and forced induction allowed, running on gas or alcohol. No nitro allowed. Wheel base limit to 8' and no wider than 6'. Rear tires are limited to 18.4" x 16.1" maximum with a rim size of 16.1 inches. All general safety rules apply.

5800 LB MODIFIED TRACTOR

Tractor must weigh no more than 5800lbs. with driver. Is limited to one motor (IE - One V8; one Allison or Turbine maximum). Forced induction allowed, running on gas or alcohol, no nitro allowed. Wheelbase limit of 14'. Rear tires are limited to 30.5" wide with a rim diameter of no more than 32", width is determined by the manufacturer. All general safety rules apply.

7200 LB MODIFIED TRACTOR

Tractor must weigh no more than 7200lbs. with driver. Is limited to two motors (IE - Two V8's, two Allisons, or Turbines maximum). Forced induction allowed, running on gas or alcohol, no nitro allowed. Wheelbase limit of 14'. Rear tires are limited to 30.5" wide with a rim diameter of no more than 32", width is determined by the manufacturer. All general safety rules apply.

8000 LB UNLIMITED MODIFIED TRACTOR

Tractor must weigh no more than 8000lbs. with driver. You may run as many motors as weight will allow. Forced induction allowed, running on gas or alcohol, no nitro allowed. Wheelbase limit of 14'. Rear tires are limited to 30.5" wide with a rim diameter of no more than 32", width is determined by the manufacturer. All general safety rules apply.

9300 LB SUPER FARM STOCK

Tractor must weigh no more than 9300lbs. with driver. Super Farm Tractors will run under the same guidelines as the pro stock tractors except for the following changes
1. Engine size to be no larger than 640 C.I.
2. OEM stock head for that model or series engine
3. No overhead cams
4. OEM stock intake and exhaust manifolds for that model or series engine
5. Intercoolers will be permitted