New This Year:
Truck & Tractor Pull!

Michigan Tractor Pullers Association
Stock 4x4 Pickup Classes Rules

CLASS # OEM

CLASS # 6000 STREET LEGAL, SMALL BLOCK

CLASS # 6500 STREET LEGAL, BIG BLOCK AND F.E. FORDS CLASS # DIESEL (IF 4 OR MORE TRUCKS SHOW)

ALL TRUCKS CAN BUMP UP TO NEST CLASS IF THEY ARE LEGAL


REGULATIONS

For a downloadable copy of the rules and regulations, click here.

To see the 2024 Tractor Pull Schedule, click here

Work Stock Diesel 8200 pounds

  • U-joint shields are MANDATORY
  • Hitch MUST have 3”x3.75” hole for hook
  • Drivers must have helmet
  • OEM transmission, axles and transfer case
  • 2.55” Billet wheel stock appearing/footprint turbos only, Turbo MUST be stock mounting footprint for make and model truck. S300 allowed IF T3 footprint
  • Factory duallys are allowed
  • Hanging weight permitted
  • Nitrous, propane and water injection is prohibited
  • Must have 4 wheel functioning brakes
  • Kill switch required
  • 35x12.50 DOT tires only
  • 26” hitch height max, Reese style receiver hitches only, adjustment must be in add on hitch, no adjustable drawbar style hitches allowed.
  • Traction bars allowed
  • Blocked suspension allowed
  • 172” wheelbase max
  • Engine conversions (Cummins in Chevy, ect.) are ALLOWED, turbo must be stock appearing for make and model engine and must have come from a 1 ton or smaller pickup
  • No ice or ice water allowed in or sprayed on intercoolers
  • Limit of 2 CP3 high pressure injection pumps permitted
  • Exhaust must have two 3/8” diameter bolts inserted in a cross pattern as close to turbo as possible and exhaust must exit vertically. (stock location discharge must have a turn up)

Stock Diesel 8500 pounds

  • Tuners allowed
  • 8500 pound limit with driver
  • 26” hitch height max
  • Stock unmodified turbocharger only, NO AFTERMARKET STOCK APPEARING TURBOS ALLOWED
  • Aftermarket exhaust allowed
  • Aftermarket intake allowed
  • Traction bars are allowed
  • Any blocking of suspension is NOT allowed
  • Airbag air lines must be disconnected or valve core removed
  • Driveshaft loops are HIGHLY recommended but not required.
  • This is a “tuner” class for stock street trucks, if you have a larger turbocharger or any extensive modifications as determined by committee in charge you will be bumped up to work stock.
  • Engine conversions (Cummins in Chevy, ect.) are ALLOWED providing OEM turbo for make and model engine is used and engine must have been available in a 1 ton or lighter pickup.
  • Hitch MUST have 3”x3.75” hole for hook
  • Nitrous, propane and water injection is prohibited