Truck Rules

1. a. All vehicles must have a current license plate in place and have current

 registration for serial number of vehicles.

b. All Pennsylvania licensed trucks must have current inspection per licensing

 requirements.

c. All items must be OEM stock unless otherwise stated in these rules.

d. No riders are permitted in truck during pull attempt. Driver may not leave the

 driver's seat while vehicle is on the pulling track. Driver will take all direction

 from the flagman on the track.

2. a. No street stock vehicle can exceed 7000 pounds including the driver.

 Vehicle can only pull in one class

b. No weight brackets or hanging weights allowed on front of vehicles.

c. Weights must be in cargo area only and be securely fastened or contained

 safely therein.

d. No weights allowed in cab or under hood.

e. Any loss of weight or external parts while under the green flag will be cause for

 disqualification of the pull (excludes internal breakage).

f. Factory bumpers or no bumper.

g. No weighted front-end accessories of any possible kind.

h. Any object that can be considered added ballast must also be in the cargo area.

i. No hidden ballast of any kind in any location.

j. Factory O.E.M Brush guard, Snowplow brackets are permitted. (NO

 HOMEMADE)

3. a. Hitch must extend beyond rear of truck and be easily accessible for person

 hooking to sled.

b. Puller must provide his/her own hitching device or clevis with a minimum

 3.75 - inch opening.

c. No pintle type hitches, unless equipped with proper size hooking ring, no chain

 hitches, ball hitches or any device pulling from rear end housing.

d. Hitch must be rigid in all directions.

e. Maximum hitch height is 26 inches from the ground to the top of hooking

 point. Any vertical clevis will be measured to the center of loop. Truck must

 pull from Reese style or bumper hitch in factory location

4. a. Any street legal D.O.T. approved tire and Wheels can be used with a

 maximum of 10 inches tread width measured at tread shoulder by 35 inches

 high or 12.50 x 35 as stamped.

b. No studded, cuts or modifications to the tires allowed.

c. Factory dual wheels are permitted.

5. a.Engine must be factory produced for 4 x 4 trucks. Stock stroke with max .030”

 over factory bore size. No Turbo or Superchargers Allowed, Except OEM Eco

 Boost

b. OEM factory aluminum intake allowed.

c. Gasoline fuel only.

d. Electric fuel pumps allowed.

e. All exhaust must exit through a muffler and exit body.

f. (1) 4-barrel 750 cfm max size. Vacuum secondaries only, no double pumpers.

g. 1 modification allowed such as:

- dual plain aluminum intake

- in frame headers

- programmer

6. a. Body of truck must be complete with windshield and all other glass in place.

b. If open top, must have roll bar and windshield.

c. Vehicle must have a bed in place.

d. Wooden flat beds are permitted, but rear wheels must be covered by bed or

 fenders.

7. a. Stock suspension must be in place.

b. No solid suspension or traction bars.

c. No rear suspension blocks.

d. No suspension modifications of any kind.

8. Brakes must be in place and in working order.

9. A Minimum of three pullers is needed to make a class.

10. a. This class is designed for stock vehicles that are regularly driven on the street.

b. All trucks will be inspected prior to class.

c. Any truck in question of being legal will be inspected by the rules committee

 personnel and decided on by the board of directors.

d. WPTTP Inc. reserve the right to pump any truck in question.

e. If any vehicle is found to be illegal, the driver and vehicle will be suspended

 for 1 year and a day from all W.P.T.T.P. Inc. events, with loss of points and

 prize money from this event unless legality can be proven within three hours.

1.a. All vehicles must have a current license plate in place and have current registration for serial number of vehicles.  

b. All Pennsylvania licensed trucks must have current inspection per licensing requirements

c. All items must be OEM stock unless otherwise stated in these rules.

d. No riders are permitted in truck during pull attempt.  Driver may not leave the    driver's seat while vehicle is on the pulling track.  Driver will take all direction from the flagman on the track.

2.a. No street stock vehicle can exceed 8750 pounds including the driver.  

b. No weight brackets or hanging weights allowed on front of vehicles.  

c. Weights must be in cargo area only and be securely fastened or contained safely therein.  

d. No weights allowed in cab or under hood. 

e. Any object that can be considered added ballast must also be in the cargo area.

f. No hidden ballast of any kind in any location.

g. Any loss of weight or external parts while under green flag will be cause for disqualification of the pull (excludes internal breakage).

h. Factory bumpers or no bumper.

i. No weighted front-end accessories of any possible kind.

j. Factory O.E.M Brush guard, Snowplow brackets are permitted. (NO HOMEMADE)

k. No weight bar receiver, Channel Iron, or any other style of front brackets are permitted

3.a. Hitch must extend beyond rear of truck and be easily accessible for person hooking to sled.

b. Puller must provide his/her own hitching device or clevis with a minimum 3.5 - inch opening.

c. No pintle type hitches unless equipped with proper size hooking ring, no chain hitches, ball hitches or any device pulling from rear end housing.

d. Hitch must be rigid in all directions.  

e. Maximum hitch height is 26 inches from the ground to the top of hooking point. Any vertical clevis will be measured to the center of loop.

4.a. Any street legal D.O.T. approved tire can be used with a maximum of 10 inches tread width measured at tread shoulder by 35 inches high or 12.50 x 35 as stamped. Any tires larger is a visual performance upgrade.

b. No studded, cuts or modifications to the tires allowed.

c. Factory dual wheels are permitted

5.a. Engine must be factory produced for 4 x 4 trucks.

b. Stock diesel engine and factory equipped turbo are permitted

c. No add on or after market turbo allowed.

b. No aluminum intake unless factory O.E.M.  

c. Diesel fuel only.

d. All exhaust must exit through a muffler and exit body.

e. Factor Turbo or 2.5 Replacement

6.a. Body of truck must be complete with windshield and all other glass in place.

b. If open top, must have roll bar and windshield.

c. Vehicle must have a bed in place.

d. Wooden flat beds are permitted, but rear wheels must be covered by bed or fenders.

7.a. Stock suspension must be in place.

b. No solid suspension.

c. Must Maintain 2 inch rear suspension travel.

d. No suspension modifications of any kind.

e. Traction bars are permitted

8. Brakes must be in place and in working order

9.  3 visible performance upgrades are allowed such as:

a. Air intake / Manifold

b. Chip / Programmer

c. Factory Fuel Pump / Duel Pumps Permitted

e. Larger Tires then in rule 4

10.  A Minimum of three pullers is needed to make a class.

11. a. This class is designed for stock vehicles that are regularly driven on the street.  

b. All trucks will be inspected prior to class

c. Any truck in question of being legal will be inspected by the rules committee personnel and decided on by the board of directors.

d. WPTTP Inc. reserve the right to pump any truck in question.

e. If any vehicle is found to be illegal, the driver and vehicle will be suspended for 1 year and a day from all W.P.T.T.P. Inc. events, with loss of points and prize money from this event unless legality can be proven within three hours.

1. All vehicles must have current license plate in place.

2. Weight class -6500 LBS

3. Weights in confines of the body, with the exception of the cab. No weight inside cab.

Weight must not be visible.

4. No weight bars or hanging weights on front end. Weight bracket receivers will be

permitted.

5. Factory front bumper only or no bumper. Bumper must remain in factory position.

6. No snowplow brackets or snowplow receiver brackets.

7. Stock trucks competing in this class will be exempt from having snowplow brackets,

brush guards, or any accessories up front at the discretion of the tech inspectors.

8. Adjustable hitch, no less than 27% of wheelbase, stationary in all directions.

9. Puller must supply his/her own clevis and pin and be ready to pull. 3 ¾ x3 ½ I.D.

Minimum diameter on all hitches.

10. 26” maximum hitch height.

11. Tire size 35” x 12.50 maximum as stamped (or metric equivalent of 315/75). All tires

must be D.O.T. approved and carry a factory stamped D.O.T. number on the sidewall.

12. No modification to tires.

13. No dual wheels, no split rims, studded tires or chains.

14. Engine must be OEM factory production vehicle engine that is/was available in mass

production vehicles only. Engine must be the same as a pick-up truck. No aftermarket

performance application blocks or engines.

15. 505 Cubic inch maximum.

16. Engine must remain in stock location or no further forward than 12” from the rear engine

block to centerline of front axle.

17. One (1) single four-barrel carburetor - dominator type (4500 series) carburetors allowed.

18. One (1) inch maximum spacer plate under carburetor only; One piece cast aluminum

intake

19. Heads – any OEM cast iron with stock valve placement and factory located intake and

exhaust ports on heads only. (example – no Ford heads with Chevy exhaust ports)

20. Wet sump oiling of OEM design.

21. Exhaust – must be in place. Headers permitted. All exhaust must exit through a muffler

and exit the body, must be down swept.

22. Fuel – Gasoline only. No alcohol, nitro, nitrous oxide or other oxygen accelerators.

23. Vehicle must have bed in place with a floor. Wooden flatbeds are permitted but must

have sides and fenders to cover rear wheels.

24. Truck cab and bed must match wheelbase of chassis.

25. All windows must be in place. Windshield and drivers’ side may not be smoked glass.

26. Transmission, transfer case, front & rear differentials must be OEM and available in one

ton (or smaller) pickup truck.

27. All steering must run through OEM steering box.

28. Stock style suspension must be in place. Stock style refers to the type of suspension that

came from the manufacturer in the year/make/model/vintage of the vehicle being pulled.

29. No blocked, welded, or any other non-stock style suspension modifications.

30. Rear suspension blocks are permitted. Rear blocks must be securely fastened. Rear blocks

are to have a maximum of three (3) inch contact area. One (1) rear block per side. No

spools or welded front differentials. Truck must be able to be driven on and off the track

without unlocking the hubs.

31. Two shocks per wheel are permitted. No solid shocks will be permitted.

32. Suspension lifts are allowed.

33. Brakes – Must be in place and working order.

34. Traction bars and other traction devices are permitted except electronic traction control

unless vehicle comes factory with it.

35. If engine is not stock, blow-proof bell housing on trucks with standard shift transmission

or blow proof blanket on automatic transmissions are required.

36. No cast iron flywheels allowed.

37. Drive shaft loops required (2 on rear and 1 on front) and shielding required. Any visible

u-joint from side of vehicle.

38. A fire extinguisher in cab is required.

39. Seat belts are required.

40. Helmet is required while pulling.

41. Kill switches are mandatory for points vehicles.

42. Fire jackets are required.

43. All safety rules must be followed.

44. Any driver arguing with a track official is subject to immediate disqualification.

45. All decisions of the track official will be final at each pull. Any protests will be settled at

the next club meeting.

46. If more than twenty-five (25) trucks are registered in a class, the Competition Director

has the right to waive the 75’ rule. Pullers will be notified before the class starts.

47. Western PA Tractor and Truck Pullers reserves the right to pump any truck in question.

48. All rules to be interpreted by officials. Any unforeseen problems or oversights will be

ruled on by officials on sight. All general and safety rules apply. All rulings will be final.

Officials reserve the right to allow or disallow a truck to compete on the basis of any

safety concern or infraction.

49. Rules will be locked in for (2) years (2025-2026) Unless class or board see a significant

issue that need addressed due to Safety

1. Maximum weight 8000#

2. OEM Chassis is mandatory. The vehicle must retain the full OEM chassis. Wheel tubs,

back half conversions and tube chassis are prohibited. Lengthening of frame allowed up

to 158”. Longer trucks (158”-172”) must maintain OEM measurements for the body

being used.

3. The body must be an OEM truck body including the full bed floor. No flatbeds

permitted. The body must retain the full sheet metal. Aftermarket hoods permitted. The

hood must be closed and securely latched when hooked to sled.

4. Maximum cubic inch 460. Engine must be in OEM locations for the body used. No

aftermarket blocks permitted. Engine must have 3/8 cable surrounding #1 and #2

cylinders and must pass through the manifolds. 2 cables 60 at splice with 4-6 inches of

slack.

5. Cylinder head must be an OEM or OEM replica for a brand of engine. Outside of the

cylinder head must measure factory width and length. No billet heads of any material.

Head must retain factory OEM valve angle. No deck plates permitted. Side draft and

aftermarket intake manifolds are allowed.

6. Hook point to be no closer than 44”of centerline of rear axle. Maximum hitch height of

24” with a minimum of 3.75”x3” opening. Hitch must be stationary in all directions.

Hitch must be frame mounted. The use of Reese style hitches is prohibited. Hitch must be

the centerline of the rear axle or behind. Hitch must not exceed 25 degree angle from

pivot point to hook point. Drawbar height adjustment link if attached to rear differential

housing the attaching point must be at axle centerline or below. The drawbar adjusters

cannot attach to anything above the centerline of the rear axle. The adjusters must go

down from the drawbar. The adjusters can only go straight downward vertically or

towards rear differential housing. No slotting of holes for adjuster attachment. No hitch

supports or adjusters fastened to rear axle housing shall be above the center point of the

rear axle. Pivot pin of the drawbar can be no further forward than the centerline of the

rear axle.

7. Turbo is limited to a 2.6” inducer bore. Bore must be smooth. No MAP Width

Enhancement groove (MWE) allowed. Compressor wheel must protrude into 2.6” bore

for 1/8”. Bore will be checked with a 2.605”turbo plug. Plug must not be able to enter the

inducer bore and contact wheel.

8. All vehicles must be equipped with upward pointing exhaust located either directly

behind the cab or out of the truck hood. Two 3/8 inch diameter bolts must be placed

through the exhaust pipe in a cross pattern within one inch of each other and within 12

inches of turbo.

9. Front hanging weights are allowed, not to exceed 60 inches forward from the

centerline of the front axle. Ballast may be added in the bed of the truck but must be

securely fastened. 61 Maximum weight 8000 pounds.

10. All trucks must have at least a six-inch-wide u-joint shield around the rear u-joint

constructed of at least 5/16-inch steel or 3/8 aluminum that will safely contain the u-joint

and the end of the driveshaft. All shields must be securely mounted to vehicles. Any front

shaft u-joints that can be visibly seen from the side of the truck must be shielded to

contain the u-joint and the end of the driveshaft.

11. A fire extinguisher system is permitted. 2.5# The fire extinguisher must be securely

mounted within reach of the driver. A complete OEM firewall is required.

12.All drivers must have a valid driver license and full SFI fire suit including helmet.

Seat Belt/restraint must be worn.

13.The complete OEM floor pan is mandatory. Vehicle must maintain a complete

firewall. Additional gauges and pillar pods are permitted.

14. Hand throttles permitted. Diesel fuel only. No propane or N02 or any other oxygen

enhancers allowed.

15. Maximum of one P pump up to P7100 allowed. 13MM plunger limit. Ag governors

permitted. The use of multiple high pressure common rail fuel pumps is legal.

16. OEM rear and front ends required. Must have come factory in a one ton or smaller

vehicle.

17. Axle shields are required. Shield to be .060” thickness steel or aluminum. A hole

may be cut in one shield to allow operation of hub lock.

18. Safety switches (rain cap or guillotine) must shut off air to diesel engines. Switch will

be securely mounted to the back of the vehicle. A 2 inch or bigger solid ring must be

attached to the end of the switch. Ring must be zip tied to the switch bracket. Switch

must also be able to be activated in the cab while the driver is secured in the vehicle.

19. Hydraulic steering permitted

20. Suspension - The upper mounting point for strut 62 assembly must be in factory

location. Adjustable caster/ camber pillow ball mounts are permitted. The lower control

arm may be strengthened provided the factory mounting points are maintained. Strut

tower braces, lower tie bars, sway bars, and limit straps are permitted. Traction bars and

devices are permitted. Raising or lowering of vehicle height with suspension

modifications is permitted but must be bolt on only. Welds permitted for attachment to

frame and axle only. Blocked suspension permitted. No airbags. Rear suspension may be

made solid.

21. Tires must be DOT approved with a maximum size of 35x12.50. No studded tires or

tire chains. No alterations to tires permitted. No bar or terra tires.

22. Dual wheels are prohibited.

23. OEM transmission and transfer cases must be used. Must have come factory in a one

ton or smaller vehicle.

24. Non-OEM transmissions prohibited. Aftermarket torque convertors, valve bodies, and

internal components are permitted.

25. SFI bell housing and/or SFI blow proof bell housing or SFI blanket type shield must

be used.

26. Water injection is prohibited.

27. Air to air intercooler only. No ice or water permitted truck during competition.

1) Additional weight is permitted, no weights allowed inside the cab. Front weights and brackets may not extend further than 60 inches from the center of the front axle.

2) Batteries must be securely mounted, may be in the stock location, in the bed, or mounted on the front weight rack/box. If mounted in the bed or on the front, a manual battery disconnect (easily accessible and clearly marked) is required. If batteries are mounted inside the cab, they must be covered with steel or aluminum with a driver accessible battery shutoff and be clearly marked.

3) Vehicles must have closed doors, unless equipped from the factory with fabric top. Half cabs must have closed doors.

a) Vehicles must have stock appearing grill, hood, front fenders, bedsides, and hood (can be cut but must shield all rotating parts)

b) Must retain all exterior body panels fiberglass is permitted. Tailgate not required 

c) Fenders may be cut for tire clearance only; the axle must be positioned within 6” of center of wheel well. 

d) Must have windshield and driver's window. (Driver’s window must be up while pulling).

e) Floor and firewall area must be covered and no holes larger than 1 inch.

f) Tube frames are allowed but must be inspected by current tech officials before permitted to pull. 2” x.120 wall thickness minimum.

4) Maximum hitch height of 24 inches. Hitch plate is to be a minimum of 1/2 inch thick at any point.

5) Minimum hitch length is 27% of truck overall wheelbase no shorter than 24”. Measurement taken from center of axle tube to hook point. Hitch pivot or attachment point cannot be any further forward than the center of the rear axle

6) Any OEM transmission and transfer case can be used, no aftermarket gear boxes or t-cases.

a) All manual transmissions must be clutch assisted. Sequential shifters are prohibited.

b) A clutch meeting minimum SFI spec 1.1 or 1.2 is mandatory on all vehicles.

c) All vehicles equipped with a manual transmission must have a flywheel shield. Applications for which a flywheel shield is not available may use a properly attached blanket that completely covers the bell housing. 

d) All vehicles equipped with an automatic transmission must use a properly attached blanket. 

e) Axle shields are required. 

f) Front hydraulic brakes or a driveline brake is required.

7) Any engine brand may be used with any brand of body/frame

a) Rear of the engine block can be no further forward than the center of the front axle, and the engine must be behind the factory grill location.

b) Small block engines only, maximum of 360 cubic inches. (No LS or HEMI type blocks permitted)

c) Provisions must be made to put on a “seal” on the engine after the truck has been cube checked.

d) Competitors must be able to have their engine pumped at any time during the pull season. A 1% variance will be permitted.

e) Officials may (at their discretion) use a pump or other means to check cubic inches. Competitors must have all tools/equipment to comply with cubic inch checks at all pulls.

f) Any heads are allowed but must be OEM valve angle. (No LS or Hemi style heads permitted)

g) A single four-barrel, mass produced, 4150 flange style carburetor is permitted. A dual, two-barrel carburetor setup is permitted. (NO PREDATORS, DOMINATORS, OR EXOTIC CARBS ALLOWED) No fuel injection of any kind is permitted.

h) Aluminum cast intake is allowed - NO tunnel rams, NO sheet metal intakes

i) No forced induction of any kind, naturally aspirated only. (No turbos, superchargers, or prochargers)

j) All exhaust systems must discharge vertically or downward. (Vertically is defined as being within 10 degrees any direction of being plumb or downward style must discharge straight back.) No rain caps permitted.

8) All trucks must be equipped with a kill switch.

9) Gasoline or racing fuel is permitted, no alcohol permitted. Nitrous oxide and all other oxygen extenders are PROHIBITTED. System components must be removed from the vehicle. Fuel tanks may be in the stock location, in the bed, or mounted on the front weight rack/box. No fuel tanks or fuel lines permitted inside the cab. If non-OEM, a manual fuel shutoff (ball valve, easily accessible, clearly marked) is required on the fuel cell.

10) D.O.T 33/14.5 or metric equivalent.

a) 29/11 dirt track tires are permitted.

b) No recaps or bar tires permitted, sipping and sanding of tires is permitted for the purpose of resurfacing only. Cleaning up existing tire grooves allowed.

c) Rear tires can be offset inward to center of front tires, no duals. Tire tracks must half lap.

d) Use of dirt deflectors is prohibited.

11) Maximum weight of 4,500 lbs.

12) Maximum wheelbase of 135 inches. Must have been a factory 4x4. Maximum width of 102” permitted.

1. Maximum weight of competition vehicle is 6200#.

2. Maximum cubic is 410 and engine type must match body manufacturer. If primary 410 cubic inch motor is replaced due to failure, secondary motor allowed up to 2% overage of 410 cubic inch.

3. Any automotive type engine must be limited to a single (4) barrel or 2 (2) barrels of carburetion with mechanical linkage, with only two valves per cylinder and must accept a stock automotive crankshaft. Aluminum aftermarket engine blocks permitted.

4. Fuel injection or any air compressing devices are not permitted.

5. Rear of engine block if moved must be a minimum of twelve (12) inches behind the centerline of the front axle.

6. OEM bore spacing must be retained in engine.

7. Grill must be in original position.

8. Truck bodies permitted and must have complete firewall, no fiberglass or plastic bodies unless OEM. OEM frame rails same as manufacturer as truck only permitted. Fiberglass repair panels are permitted.

9. Axle shields are required. Shield to be .060” thickness steel or aluminum. Shield not to be mounted to axle ends or hub bolts. A single hole may be cut in one to allow locking of hubs.

10. Maximum wheelbase is 134 inches on all Super Stock 4X4 trucks.

11. Maximum tire size to be 112 inches in circumference once tire is inflated to 30psi. The outside edge of the narrow axle must overlap the centerline of the tire on the wide axle by at least one inch.

12. Clear plexi-glass or factory tint glass permitted.

13. No mud flaps or dirt deflectors will be permitted.

14. No fuel tanks, fuel lines, pressure gauges or pups allowed in cabs. All hydraulic lines in cab must be shielded top and sides with a minimum of .060 aluminum.

15. All air or hydraulic suspension systems cannot have hydraulic, air, or electric lines attached to these devices during competition.

16. Hitch height maximum is to be 26” at point of hook before, during, and after pull. Hitch must be rigid in all directions and solidly mounted. Pulling point can be no more than 1 ½ inches from back edge of drawbar. No clevis, chains, or cables permitted in hitching device. From point of hook to centerline of rear axle shall be no less than 27% of truck wheelbase.

17. Electronic timing delay devices or programmable ignition boxes prohibited.

18. Read only engine and chassis monitoring functions will be permitted.

19.SFI Approved gloves, fire suit and shoes must be worn when pulling. Helmets must be Snell 90 or above.

1. Weight Class 6800 LBS

2. Trucks may be hauled in.

3. All items must OEM stock unless otherwise stated in these rules.

4. No weight brackets or hanging weights allowed on front of vehicles.

5. Weights must be in cargo areas only and be securely fastened or contained safely therein.

6. No weights allowed in cab or under hood.

7. Any loss of weight or external parts while Under the green flag will be cause for

disqualification of the pull (excludes internal breakage)

8. Factory bumpers or no bumper.

9. No weighted front-end accessories of any possible kind.

10. Any object that can be considered added ballast must also be in the cargo area.

11. No hidden ballast of any kind in any location.

12. Hitch must be a “Reese” style hitch or pull from the bumper. 

13. Puller must provide his/her own hitching device or clevis with a minimum 3 ¾ inch

opening.

14. No pintle type hitches, chain hitches, ball hitches or any device pulling from rear end

housing.

15. Hitch must be rigid in all directions.

16. Maximum is 26 inches from top of hitching point parallel to ground.

17. Any vertical clevis will be measured to center of loop.

18. Any street legal D.O.T. approved tire can be used with tread width a maximum of 10

inches wide measured at tread shoulder by 35 inches high or 35 x 12.5 as stamped.

19. No studded tires, cuts or modifications allowed.

20. Engine must be factory produced for 4x4 trucks. Cannot exceed 502 cubic inches.

21. No aluminum intakes unless factory O.E.M.

22. Carburetors limited to 4150 cfm with vacuum secondaries only, no double pumps

allowed.

23. Gasoline ONLY, alcohol or any other oxygen enhances are not allowed.

24. Electric fuel pumps are allowed. Fuel injected may reprogram with chip.

25. No headers allowed.

26. All exhaust must exit through a muffler and exit body.

27. Two visual modifications listed below will be permitted:

a. Cast aluminum dual plane aftermarket intake.

b. Headers-in frame only

c. Computer programmer (not considered chip)

28. Body of truck must be complete with windshield and all other glass in place.

a. If open top must have roll bar and windshield.

29. Must have bed in place.

a. Wooden flat beds are permitted, must have bed and fenders cover rear wheels.

30. Stock suspension must be in place.

31. No solid suspension or traction bars.

32. 2 Shocks per wheel, factory location.

33. Rear suspension blocks are permitted, rear blocks must be securely fastened with a

minimum of one (1) inch clearance in all directions. Rear blocks are to have a maximum

of three (3) inch contact area. One (1) rear block per side, no spools or welded front

differentials. Truck must be able to be driven on and off the track without unlocking the

hubs.

34. Spring clamping is permitted. Four (4) clamps per differential in addition to factory

installed spring clamps. Maximum spring clamp width of 4 inches.

35. Factory Shackles must maintain all factory mounting points.

36. Stock style suspension must be in place. Stock style refers to the type of suspension that

came from the manufacturer in the year/make/model/vintage of the vehicle being pulled.

37. Brakes must be in place and in working order.

38. All trucks will be inspected prior to class.

39. Any truck in question of being legal will be inspected by rule committee personnel and

decided on the board of directors.

40. We reserve the right to pump any truck in question.

41. We reserve the right to weigh any truck with weights removed.

42. All rules to be interpreted by officials, any unforeseen problems or oversights will be

ruled on by officials on sight.

43. All rulings will be final.

44. Officials reserve the right to allow or disallow a truck to compete on the basis of any

safety concern or infraction.

45. Any driver arguing with a track official is subject to immediate disqualification. All

decisions of the track official will be final at each pull. Any protests will be settled at the

next club meeting. 

1. Weight Class 8500

2. Trucks may be hauled to the pull.

3. Motor changes that increase horsepower over and above the factory rated horsepower, or

that increase RPM’s over and above the factory rated range will be limited to changing of

chips, air intake system (K&N and others) and exhaust systems. Only OEM injection

pumps are allowed.

4. No studded tires, tire chains or any tire not specifically intended for street use are

permitted. All tires must carry a D.O.T. number on the sidewall. No cut altered or

sharpened tires. Trucks with dual rear wheels (2wd or 4wd) may enter and run in this

class.

5. Front bumpers must be UNALTERED if factory stock. No hanging weighted front

devices are permitted but homemade bumpers, brush guards and winch brackets and

brackets for snow plow frames are permitted so long as no modifications that would add

weight are determined. Homemade bumpers and brush guards must be HOLLOW. A

truck is permitted to compete without any front bumper. All weight must be secured in

bed of truck, must have factory interior from back of driver's seat forward.

6. The hitch point will be from the rear bumper only or from a “REESE TYPE” hitch on a

level plane with the point of attachment to the truck’s frame behind the pumpkin of the

rear end. No other types of hitches are permitted. No angled, lever, pivot, axis or other

types of “TRICK” hitches are allowed and the hitch must be stationary in all directions.

The hook point must be the furthest point to the back of the truck. Hook point must be

past the bed of the truck if there is no bumper, or past the end of the bumper. Each truck

driver must supply a twisted clevis that will accommodate a minimum of 3.75 inches

across the opening to accept a sled hook. 

7. No aluminum engine blocks are permitted unless OEM, no open headers will be

allowed. Pump diesel is the only fuel permitted. Absolutely no alcohol, nitrous oxide,

propane or other oxygen extenders. Headers are approved. Cross bolts-PPL specs–

(nearest to the charger) are required if no muffler is used. No superchargers are allowed.

Exhaust may not exit to the side of the vehicles (towards the grandstand area) Engine

swaps between manufacturers are not permitted. Duallies using gasoline as fuel may

enter this class. Street legal gasoline trucks (unable to make weight for the 6200 lbs class)

may enter this class with permission of the officials.

8. OEM suspension must be in place, No trussed frame, solid suspension allowed, must be

removable, no permanent welds.

9. Truck must be stock in appearance. Floor in bed must be solid. The wheelbase must not

be changed from the original manufacturer. Wooden flatbeds are permitted.

10. The transmission and transfer case must be OEM and available in one ton (or smaller)

pickup trucks.

11. Drive shaft loops are required (2 on rear, one on front) U joint shielding on rear U joint or

any visible U from the side of the vehicle.

12. The vehicle is limited to a single 2.6 smooth bore turbo charger. Competitors must make

provisions at tech officials request to allow complete inspection of the compressor wheel

and housing. Failure to comply with the request in disqualification and banishment until

the turbo is re-inspected.

13. 6.4 liter Powerstroke engines may utilize the factory twin-turbo configuration with no

alterations/modifications to bore housing or wheel. 6.4 Power strokes will be permitted to

run modified turbos as long as the atmosphere turbo does not exceed the OEM straight

bore dimension (2.59”) No TAPERED COVERS will be permitted.

14. See Turbo Specs

15. A single turbocharger with a single compression stage is permitted. The intent of this rule

is to limit turbochargers to OEM-style wheel and cover geometries with minimal

modifications. Owners are required to make the compressor when and cover accessible to

Western PA Tractor and Truck Pullers techs for inspection at any time.

a. Thecompressor cover inducer bore is limited to 2.50” diameter and will be

checked with a 2.550” plug. Bore may not be ovaled or otherwise distorted from a

true circular shape to allow stoppage of the plug, but allow additional airflow to

the wheel.

b. Turbo is limited to a 2.6 inducer bore. Bore must be smooth. No MAP width

enhancement grove MWE allowed. Compressor wheel must protrude into 2.6

bore for 1/8”. Bore will be checked with a 2.605 turbo plug. Plug must not be able

to enter the inducer bore and contact wheel.

16. The compressor wheel must protrude into the inducer bore by visual inspection and by

using a ring gauge on the compressor wheel. The ring gauge used will be made from 16

gauge. Sheet metal with a fully radiused 2.55” bore (see diagram). The wheel tips must

protrude through the gauge to be legal.

17. The compressor wheel and compressor cover contours must be parallel within normal

OEM clearances <.030” per side and will be checked visually or with a wire gaugr if

needed. No cuts, ledges, steps, tapers or any other features may be machined into the

whell or cover contour to allow additional airflow. Removable bushings are not

permitted.

18. A single MWE groove is limited to 0.150” wide at all locations around the inducer bore

and will be checked with ball diameter at 0.155” on a pick or by other means. The ball

must not pass through the groove. No additional features or structures are permitted in the

slot that would prevent passage of the ball. 2.5” bore both before and after the MWE.

Where the groove intersects the inducer bore, no radiusing or contouring is allowed; only

sharp corners with minimal chamfered/edge rounding is legal. Air may only enter the

compressor wheel via the specified inducer and MWE aag Q 1’ groove. No forward

facing MWE

19. Any type of adjustable compressor inlet on the turbo must be welded into place.

20. The MWE leading and trailing edges are defined in the diagram. The MWE trailing edge

must be behind the wheel tips. The MWE leading edge must be within 0.500” of the

wheel tips and will be measured with a hook style pick or by other means with a 0.500”

mark on it. Excessive clipping or back-beveling of the wheel tips to move the MWE

further up the contour is not permitted.

21. All interpretation of these rules lie with the Western PA Tractor and Truck Pullers Inc.

techs and their decision is final

22. Water injection is prohibited. All system components must be removed from the truck.

1. a. All vehicles must have a current license plate in place and have current registration for serial number of vehicles.

b. All Pennsylvania licensed trucks must have current inspection per licensing requirements

c. All items must be OEM stock unless otherwise stated in these rules.

d. No riders are permitted in truck during pull attempt. Driver may not leave the driver's seat while vehicle is on the pulling track. Driver will take all direction from the flagman on the track.

2. a. No street stock vehicle can exceed 9000 pounds including the driver.

b. No weight brackets or hanging weights allowed on front of vehicles.

c. Weights must be in cargo area only and be securely fastened or contained safely therein.

d. No weights allowed in cab or under hood.

e. Any object that can be considered added ballast must also be in the cargo area.

f. No hidden ballast of any kind in any location.

g. Any loss of weight or external parts while under green flag will be cause for disqualification of the pull (excludes internal breakage).

h. Factory bumpers or no bumper.

i. No weighted front-end accessories of any possible kind.

j. Factory O.E.M Brush guard, Snowplow brackets are permitted. (NO HOMEMADE)

k. No weight bar receiver, Channel Iron, or any other style of front brackets are

 permitted

3. a. Hitch must extend beyond rear of truck and be easily accessible for person hooking to sled.

b. Puller must provide his/her own hitching device or clevis with a minimum 3.75  inch opening.

c. No pintle type hitches unless equipped with proper size hooking ring, no chain hitches, ball hitches or any device pulling from rear end housing.

d. Hitch must be rigid in all directions.

e. Maximum hitch height is 26 inches from the ground to the top of hooking point. Any vertical clevis will be measured to the center of loop.

4. a. Any street legal D.O.T. approved tire can be used with a maximum of 10 inches tread width measured at tread shoulder by 35 inches high or 12.50 x 35 as stamped. Any tires larger is a visual performance upgrade.

b. No studded, cuts or modifications to the tires allowed.

c. Factory dual wheels are permitted.

5. a. Engine must be factory produced for 4 x 4 trucks.

b. Stock diesel engine and factory equipped turbo are permitted

c. No add on or after market turbo allowed.

b. No aluminum intake unless factory O.E.M.

c. Diesel fuel only.

d. All exhaust must exit through a muffler and exit body.

e. Factor Turbo or 2.5 Replacement or Smaller allowed

f. Factor Injection Pump Only

6. a. Body of truck must be complete with windshield and all other glass in place.

b. If open top, must have roll bar and windshield.

c. Vehicle must have a bed in place.

d. Flat beds are permitted, but rear wheels must be covered by bed or

 fenders.

7. a. Stock suspension must be in place.

b. No solid suspension.

c. No suspension modifications of any kind.

d. Traction bars are permitted

8. Brakes must be in place and in working order

9. 2 visible performance upgrades are allowed such as:

a. Exhaust Manifold

b. Chip / Programmer

c. Intake Manifold

10. A Minimum of three pullers is needed to make a class.

11. a. This class is designed for stock vehicles that are regularly driven on the street.

b. All trucks will be inspected prior to class.

c. Any truck in question of being legal will be inspected by the rules committee personnel and decided on by the board of directors.

d. WPTTP Inc. reserve the right to pump any truck in question.

e. If any vehicle is found to be illegal, the driver and vehicle will be suspended for 1 year and a day from all W.P.T.T.P. Inc. events, with loss of points and prize money from this event unless legality can be proven within three hours.