Vermont Tractor Pullers Association
Work Stock Diesel
Driver Eligibility:
1. General rules apply.
2. Minimum 16 yr old licensed driver.
Safety:
1. OEM seatbelt or better must be worn.
2. DOT approved helmet with chin strap fastened.
3. No passengers on track or in pit area.
4. Fire extinguisher recommended.
Vehicle Eligibility:
1. Daily-driven on the road full bodied diesel pick-up trucks.
2. May be 2WD or 4WD.
3. Must have current registration.
4. Must have current insurance card.
5. Current inspection and inspectable condition.
Chassis:
1. Full OEM chassis.
2. Engine in OEM location for the body used.
3. No wheel tubs, back half conversions or tube/homemade chassis.
4. OEM floor pan and firewall is MANDATORY.
5. Factory wheel base must be maintained.
6. Trucks must have four wheel working brakes.
Engines/Drive Line:
1. Limited to a stock, OEM make-specific compression ignition engine.
2. All injector pumps must be OEM.
3. Electronic modules, tuners and programmers allowed.
4. After market air induction systems allowed.
5. OEM intercoolers only.
6. Engine must be governed at OEM specs.
7. Exhaust must exit rear of cab, exhaust stacks are permitted, straight thru exhaust permitted.
8. Fuel must be pump #1/#2 diesel only. Soy/biodiesel allowed. OEM fuel tank is MANDATORY.
9. Nitrous oxide, propane, alcohol, methanol and all other oxygen and flammables are PROHIBITED.
10. Water injection is PROHIBITED.
11. Turbocharger is limited to stock, OEM/factory make specific charger only. Turbocharger must be in original location. No
mounting plate adapters or plumbing changes. OEM twin setups allowed.
12. Must have OEM factory equipped transmission, transfer case, front and rear differentials. Transmission brakes are prohibited.
13. Drive shaft loops: RECOMMENDED SAFETY: All trucks should have 360 degree, 6” long u-joint shields covering; rear end yoke,
rear output yoke, front output yoke and front end yoke. The front output yoke cover is not required if lack of room prevents
installation. Shield thickness requirements: aluminum minimum of 3/8” and steel minimum 1/4”.
Hitches:
1. Maximum of 26” height. Reese style hitch minimum class 3 (2 x 2 receiver), class 3 must be reinforced. Class 5 hitches
installed to OEM specifications.
2. Hook point must be the furthest point back of the truck.
3. 6” riser maximum.
4. No hooks to bumper or ball. No Clevis.
5. Hitch must have a 3 ½” hole.
Suspension:
1. NO solid blocking. MUST have a workable suspension. Air bags and timbrens allowed.
2. Traction bars, sway bars and limit straps allowed.
Tires:
1. Tires must be DOT approved. No modifications allowed, i.e.: no cutting, grooving etc. Aftermarket tires and wheels allowed.
2. No studs and no tire chains.
3. Duals, only on OEM setups.
4. All wheel studs and axle bolts/studs must be used and tight. Use of hub caps and axle stud guards recommended.
Added Weight:
1. Weight in pickup box only.
2. No weight up front, under hood or in cab. Weight Class: 8500 lbs with driver.
Misc:
1. If a work stock truck/driver moves up to the 2.5 class, assuming the truck meets the rules for that class, they are not allowed to
return to the work stock class.
2.5 Diesel
Driver Eligibility:
1. General rules apply.
2. Minimum 16 yr old licensed driver.
Safety:
1. OEM seatbelt or better must be worn.
2. DOT approved helmet with chin strap fastened.
3. No passengers on track or in pit area.
4. Fire extinguisher recommended.
Vehicle Eligibility:
1. Daily-driven on the road full bodied diesel pick-up trucks.
2. Maybe 2WD or 4WD.
3. Must have current registration.
4. Must have current insurance card.
5. Current inspection and inspectable condition.
Chassis:
1. Engine and drive line must come factory in a one ton or less pick up.
2. Engine in OEM location for the body used.
3. No Wheel tubs, back half conversions or tube/homemade chassis.
4. OEM floor pan and firewall is MANDATORY.
5. Factory wheel base must be maintained.
6. Trucks must have four wheel working breaks.
Engines/Drive Line:
1. Limited to a stock-appearing, OEM make-specific compression ignition engine.
2. The fuel injection pump is limited to cylinder number specific (i.e. 6 cylinder pump on 6 cylinder motor). The use of multiple
high pressure common rail fuel pumps or HPOPs are permitted. P pumps that are allowed are the p3000 and the p7100. Ag
governors are allowed. No Sigma or 12 cylinder pumps allowed.
3. Electronic modules, tuners and programmers allowed.
4. After market air induction systems allowed.
5. OEM intercoolers only.
6. Engine must be governed at OEM specs.
7. Exhaust must exit rear of cab, exhaust stacks are permitted, straight through exhaust permitted. Exhaust must exit upward.
8. Fuel must be pump #1/#2 diesel only. Soy/biodiesel allowed. OEM fuel tank is MANDATORY.
9. Nitrous oxide, propane, alcohol, methanol and all other oxygen carriers and flammables are PROHIBITED.
10. Water injection is PROHIBITED.
11. Turbocharger OEM or aftermarket allowed. OEM twin setups allowed. Inlet size 2.500 maximum (2.550 Slug). NO inlet
bushings allowed.
12. Must have OEM factory equipped transmission, transfer case, front and rear differentials. Transmission brakes are
prohibited.
13. Drive shaft loops: MANDATORY SAFETY. All trucks MUST have 360 degree, 6” long u-joint shields covering; rear end yoke, rear
output yoke, front output yoke and front end yoke. The front output yoke cover is not required if lack of room prevents
installation. Shield thickness requirements: aluminum minimum of 3/8” and steel minimum 1/4”.
Hitches:
1. Maximum of 26” height. Reese style hitch, minimum class 3 (2 x 2 receiver). Class 3 MUST be reinforced. Class 5 hitches
installed to OEM specifications.
2. Hook point must be the furthest point back of the truck.
3. 6” riser maximum.
4. No hooks to bumper or ball. No Clevis.
5. Hitch must have a 3 ½” hole.
Suspension:
1. No solid blocking. MUST have a workable suspension. Air bags and timbrens allowed.
2. Traction bars, sway bars and limit straps allowed.
Tires:
1. Tires must be DOT approved. NO modifications allowed, i.e.: no cutting, grooving etc. After market tires and wheels allowed.
2. No studs and no tire chains.
3. Duals, only on OEM setups.
4. All wheel studs and axle bolts/studs MUST be used and tight. Use of hub caps and axle stud guards recommended.
Added Weight:
1. Weight in pick up box or on front bracket only.
2. Front weight bracket and weights not to exceed 60” forward of centerline of front axle.
3. No weight under hood or in cab.
Weight Class:
8500 lbs with driver
2.6 Pro Diesel
Driver Eligibility:
1. General rules apply.
2. Minimum 16 yr old licensed driver.
Safety:
1. OEM seatbelt or better must be worn.
2. DOT approved helmet with chin strap fastened.
3. No passengers on track or in pit area.
4. Fire extinguisher MANDATORY.
5. Fuel and/or air shut off MANDATORY. All fuel and/or air shut offs must be mounted independently on draw bar. Cable end
must have a loop to attach to sled cable, and must be located in the rear center of truck. Minimum of 14” above hitch and a
maximum of 6” off center in either direction.
Chassis:
1. Engine and driveline must come factory in a one ton or less pick up.
2. Engine in OEM location for the body used.
3. No Wheel tubs, back half conversions or tube/homemade chassis.
4. OEM floor pan and firewall is MANDATORY.
5. Factory wheel base must be maintained.
6. Trucks must have four wheel working brakes.
Engines/Drive Line:
1. Limited to a stock-appearing, OEM make-specific compression ignition engine.
2. Electronic modules, tuners and programmers allowed.
3. After market air induction systems allowed.
4. Exhaust must exit upward.
5. Fuel must be pump #1/#2 diesel only. Soy/biodiesel allowed.
6. Nitrous oxide, propane, alcohol, nitro methane, methanol and all other oxygen carriers and flammables are PROHIBITED.
7. Water injection is PROHIBITED.
8. The vehicle is limited to a single turbocharger: the inducer bore on the compressor housing may be 2.6”. The inlet will be
measured using a 2.65” plug or internal calipers. Bushing from any larger turbo size down to a 2.6” turbo is PROHIBITED. A stock
map width enhancement (MWE) groove is allowed. No MWE groove will be allowed that has a width greater than ¼”. All
provisions allowing air to the wheel other than via the bore and the MWE groove are prohibited. 6.4 liter Power stroke engines
may utilize the factory twin-turbo configuration.
9. Drive shaft loops: MANDATORY SAFETY. All trucks MUST have 360 degree, 6” long u-joint shields covering; rear end yoke, rear
output yoke, front output yoke and front end yoke. The front output yoke cover is not required if lack of room prevents
installation. Shield thickness requirements: aluminum minimum of 3/8” and steel minimum 1/4”.
Hitches:
1. Maximum of 26” height. Reese style hitch, minimum class 5 (2 ½” x 2 ½” receiver). Class 5 hitches installed to OEM
specifications. Reinforcements recommended.
2. Hook point must be the furthest point back of the truck.
3. No hooks to bumper or ball. No Clevis.
4. Hitch must have a 3 ½” hole.
Suspension:
1. Solid blocking, air bags, and timbrens allowed.
2. Traction bars, sway bars and limit straps allowed.
3. 4 wheel hydraulic brakes are MANDATORY.
Tires:
1. Tires must be DOT approved. NO modifications allowed, i.e.: no cutting, grooving, etc. After market tires and wheels allowed.
2. No studs and no tire chains.
3. Duals allowed on 2WD and 4WD rear only.
4. All wheel studs and axle bolts/studs must be used and tight. Use of axle stud guards MANDATORY.
Added Weight:
1. Weight in pick up box or on front bracket only.
2. Front weight bracket and weights not to exceed 60” forward of centerline of front axle.
3. No weight under hood or in cab.
Weight Class:
8500 lbs with driver
