1957 and older or production models that started in 1957. Exception: JD 30 Series allowed.


4500, 5500, 6500, and 8500#


A tractor cannot be entered in classes below its manufactured shipping weight. A Division I tractor may also pull in Division II if the tractor meets the rules for Division II. Division II tractors cannot drop to Division I.

Max: 4501-5500# 170 Max: 5501-6500# 229 Max: 8500# 300 No cut tires. See tire size chart below from Firestone Traction Field & Road, and Firestone Field & Road charts.

Maximum Tire Size

Tractors must have OEM recommended diameter rims and OEM wheels. Tires must be on rim width, not exceeding tire manufacturers original recommendations to include cut-downs for tractors that may have originally been on steel wheels.

Rims and Wheels

2.75 mph. Not allowed to shift torque or gear.

Speed Limit

Weights of bolt on type to either the front or the back wheels. Weights can be made. They must be round and made of metal and be as near appearing to original manufactured weights as possible. No concrete or suitcase weights allowed.


Stock block, naturally aspirated. Exceptions: Oliver 99 GM, etc. Stock head, manifold, and carburetor (by part number). Manifolds are to be replacement manufactured parts accepted for that make and model tractor. Stock RPM. Engine parts not in parts book or replacement parts book for that specific tractor cannot be used. Exceptions: Distributors can be used on Antique tractors. A factory coil must be used. No electronic ignitions, square coils, MSD coils or chrome coils allowed.


Maximum 16” height(stationary in all directions) locked at 16”on tractors such as IH fast hitch, Ford 3 point hitch, etc. Hitches must be as from factory-unaltered for that specific tractor. Operator must furnish a straight up and down clevis with a minimum opening of 2.5” bolted orpinned tightly with spacers to the draw bar. Hitch measured at hook pointof clevis. Farmall H’s and M’s must pull from an original drawbar hooked to the original belly hook point. Drawbar must be 24” minimum from centerof axle to hitch point.


The front wheels of the tractor are not allowed to exceed 16” offthe ground during a pull. Operator is to provide a linked chain or deviceattached parallel with the center of the front axle with a maximum of 16”on the ground. Chain must be dragging at the time tractor is hooked. Wheelie bars are optional. If wheelie bars meeting upper division requirements are used, the above nose height rule does not apply.


Tractors must maintain original stock appearance. If a part isnot found in the manufacturer’s parts book it cannot be used. No extra accessories allowed. All guards, shrouds, covers and shields shall be in place as from factory and be made of original material (steel or iron) and as near like factory as possible. Seat must be an original seat or a manufactured seat made for a farm tractor placed with stock mountings (such as TSC).


Advertising plaques or signs may be put on tractor as long as it does not interfere with teching of tractor.