Cumberland Valley Tractor Pullers 2017 Click for Info.



  1. Tractors must be agricultural tractors having chassis, engine, clutch, transmission housing, differential housing, transmission, hood and grill of one manufacturer. OEM cylinder head must be for series engine used - No recast; No aluminum; No overhead cams allowed. Engine, clutch, transmission and differential housings must be bolted together as one unit. All bolts connecting all housings must be in their stock locations- OEM length & location from rear end housing to front of engine. No component powertrains. Fuel injection pumps limited to a Sims pump or a Bosch A-line pump only. All Bosch A-line pumps must use OEM delivery valve holders for a stock A-pump. No housing modifications allowed. No billet pumps!!! Tractor must have wide front axle. Front wheels must track within rear wheels. Tractor must have steel flywheel, and clutch components. No cast parts allowed in clutch system.
  2. Engine cubic inch limit of 466 CID.
  3. Vehicles must have OEM cylinder head and must be for series engine used. No recast; No aluminum; No overhead cams allowed. 
  4. Diesel tractors only.
  5. Water injection allowed
  6. The exhaust housing of the turbo must be a T-3 series. The T-3 exhaust housing cannot be altered in any way. The complete housing must remain intact. The foot and body of the housing must stay together as one unit. No modifications to either the foot or the body of the housing. There must be only one turbo going through one pressure stage. The turbo must be under the hood of the tractor.
  7. Exhaust must discharge vertically upward above highest point of tractor and must be securely attached. Exhaust must be at least 18 inches above the hood and no curved pipes or rain caps allowed. Exhaust pipe must be cross bolted with two 3/8 inch bolts (Grade five) within 1 inch of each other in vertical pipe and two 5/16 inch bolts within one inch of exhaust housing.
  8. Vehicle with a plastic or fiberlass hood must be shielded in the turbo area with a minimum metal thickness of .060.
  9. All engine fans must be shrouded with steel 1/16 inch or thicker, 360 degrees or factory.
  10. Minimum drawbar length of 18 inches from the center of rear wheels to point of hook. Drawbar must be rigid in all directions with maximum of 20 inches from top of hitch to the ground. Drawbar must be parallel to the ground. Hitch must be horizontal-not vertical. Hitch hole to be 3'x 3.75"
  11. All tractors will require:
    • Air shut off at rear of tractor-must also be able to be operated manually (by the operator from the seat of the tractor).
    • Flywheel protection in the form of a scatter blanket or a 6 inch x 3/8 inch steel (360 degrees around the flywheel area.
    • Rear wheelie bars installed in accordance with the following specs:
      1. Pads on bottom of bars to be a minimum of 5 inch square pads.
      2. Pads to be a minimum of 32 inches rearward from the center of the rearward housing.
      3. Pads maximum of 10 inches off the ground.
      4. Outside to outside width of pads to be a minimum of 20 inches.
      5. Minimum 12 inch high bumper bars-top to be fastened to stabilizer bar framing.
      6. Bars must support weight of the tractor for weight class being pulled.
    • Deadmans throttle must have at least 2 springs.
    • Harmonic balancer to be shielded to be contained in vehicle.
  12. Removal of PTO or hydraulics allowed-if not removed PTO shafts must be covered with a safety shield.
  13. Competing vehicles must have working rear brakes.
  14. Competing vehicles must have fenders that consist of a solid barrier between the driver and any part of the rear tires. The barrier must be able to sufficiently support the weight of the driver and must extend a minimum of 6 inches horizontally at the top, and be a minimum of 36 inches wide at the top.
  15. Fire extinguisher is required.
  16. Maximum tire size is to be 24.5 x 32.
  17. No cut tires of any kind.
  18. All tractors must have stock wheel base and frame length. No extended weight frames.
  19. Three way fuel dump valves are required.
  20. No accelerants such as propane and alcohol mixtures.
  21. No intercoolers of any kind allowed.
  22. Long pants, shirts and shoes required. (No shorts of any kind).