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5700 Pro-Field

1.)      5700 lb Turbo and 5700 lb naturally aspirated tractors will pull in the same class.

2.)      Engine must be of stock configurations and use OEM adapter plates.

3.)      Industrial tractor type engines only, no automotive type engines.

4.)      Primary fuel shall be diesel or pump gas, no alcohol. No electronic controlled fuel injection allowed on gasoline or diesel engine.  No throttle base injection systems.

5.)      No nitrous oxide or propane injection system allowed.

6.)      Diesel tractors are allowed P Pumps and gasoline tractors are allowed one 4 barrel carburetor.

7.)      Diesel tractors may be converted to gasoline fuel system.

8.)      Tractors can pull in higher weight classes, but must comply with all safety rules for that class.

9.)      Maximum tire size 18.4 x 38

10.)  5700 lb. weight limit.

11.)  Naturally aspirated, maximum of 650 cubic inch limit.

        Turbo tractors shall have a 360 cubic inch limit

12.)   Tractors equipped with turbo or supercharger shall comply with the following additional rules:

      (a)       3000 RPM limit. Tractors shall have operative, factory-equipped governors which will be checked by: (1) visual retarding movement of the throttle linkage from governor case to carburetor; and (2) audible acceleration when clutch is engaged while holding brakes on with tractor in high gear.