GENERAL TRUCK/TRACTOR RULES
1. Driver must be at least 18 years of age, or 16 years of age with a minor release form signed by parent or guardian. Stock Trucks must be street legal, have a current state inspection sticker and license. NO DEALER TAGS.Vehicle must be in the same physical condition as at the time it was inspected for highway use. (License,Registration, and Inspection not required for Super Stocks)
2. All contestants at every event must sign a waver understanding that they are competing at their own Risk and that they will not bring suit against any official, employee, promoter, and/or property owner. By signing the release fcrm,you agree to all rules set forth.
3. All vehicles must pass tech inspection before competing. If presiding officials determine a vehicle is unsafe, officials have the right not to allow said vehicle to compete. TECH INSPECTION AREA CLOSES 1 HOUR PRIOR TO START OF SCHEDULED EVENT.
4. ENTRIES CLOSE 30min PRIOR TO SCHEDULED EVENT. If you are going to be late, call ahead to the phone number given on specific event on the site calendar. Otherwise NO EXCEPTIONS.
5. All drivers must attend drivers’ meeting approximately 30min before event is scheduled to start.
6. A vehicle cannot be registered after drivers’ meeting has taken place, UNLESS APPROVED BY OFFICIALS.
7. Only ONE driver and NO RIDERS will be allowed in a vehicle when it is being towed or driven while In pit area, staging area, or on the track.
8. When the competition vehicle’s engine is running, (pits, staging area, track, etc.) a driver must be in the driver’s seat. NO EXCEPTIONS! AUTOMATIC DISQUALIFICATION!
9. No one allowed on track except for track officials and contestants. TRACK is defined as the area within 35 feet in ANY direction of the contest boundaries, including the runoff area at the finish end of the track.
10. All contestants must drive vehicle onto the track and into position to compete under its’own power and must also leave under its’own power unless breakage occurred.
11. All pulls must start with a tight chain. No jerking of any kind is permitted. Vehicle must remain within boundaries of the track or the puller will be disqualified.
12. Puller will be allowed a total of two (2) attempts within the 75 feet mark to start the sled. Test puller may drop six (6) positions.
13. Puller must wait for green flag from starting flagman before starting the pull. Leaving the starting line while under the red flag will be an automatic disqualification. NO EXCEPTIONS!
Driver must stop immediately upon signal of red flag from flagman.
14. Competition vehicles must be operated in a safe manner AT ALL TIMES within the confines of the track, the pit area, and the staging area. Track officials have the right to stop and disqualify any vehicle which is being operated in a reckless manner. PIT AND STAGING AREA SPEED LIMIT 5 M.P.H.
15. A contestant and his crew will be disqualified for either emotional or physical reasons by the Competition Director or track officials. EXAMPLE: recklessness, foul language directed at the officials, the consumption of drugs or alcoholic beverages, being either on said premises or prior to or during event. DRIVERS WILL BE HELD RESPONSIBLE FOR THE ACTIONS OF THEIR CREW.
16. If any vehicle or driver is disqualified, there will be NO refund of entry fee.
17. All street vehicles must be equiped with a 2-1/2 lb. Dry chemical fire extinguisher or a 1 lb. Halon extinguisher. Extinguisher must be fully charged, in working condition, safely secured , and within easy reach of the driver.
18. Seat belt is required and must be worn during competition.
19. (Trucks) Driver must wear D.O.T. approved helmet. Helmet must be fastened. Open body vehicle drivers must also wear eye protection.
20. All open body vehicles must have at least a 4-point roll bar fastened directly or indirectly to frame.
21. Vehicles must have a solid firewall and floor. Only holes allowed are those for brakes, clutch, transmission controls, and wiring.
22. Wheelbase must be proper for body used,measured from center of front axle to center of rear axle.
23. One four-barrel carburetor maximum. Aluminum intake allowed. Rams and cross members allowed. NO TURBOCHARGES, SUPERCHARGES, OR FUEL INJECTION ALLOWED, unless stock for make and model of vehicle.
24. All engine fans must be covered or have factor shrouds in place.
25. Track officials will have the option to check competitors for weight and rule violations at any time during the event. Contest will be governed by track officials and Competition Director with all decisions final.
26. The Promotor or Competition Director reserves the right to change any safety rules or any rules in general, if they feel there is a necessity to do so.
N.P.J. STOCK TRACTOR RULES (Pace)
A.1. Tractor must have a stock agricultural engine block, with no visual engine modifications. Engine must be original type or factory replacement. All turbochargers(on factory equipped models) must be under the hood. Original hood and grill must be in place. No electric fuel pump unless stock factory equipment. Starter must be in place. All wheels must be in place. All stock tractors must have PTO and hydraulics present and working on 1960 and newer tractor or have factory manufactured cover in place. Fenders must be present on all 1960 and newer tractors.
B.
2. All factory fuel tanks must be in place and in use and all air cleaners with proper elements in place and in use on all farm stock classes.
C. 3. All exhaust must:
a. Discharge upward with a minimum pipe length of 18” from the hood line or use a muffler. If a curved pipe is used it must discharge forward or to the side, unless it is stock factory equipment that does not allow it to be turned.
b. Be a factory under slung exhaust system in working condition.
4. No turbochargers or intercooler's allowed in 5,500lb, 7,500lb, and 9,500lb classes unless original factory equipment for that make and model being entered. Turbocharger must be stock turbo for that model allowed in 5,500lb, 7,500lb, & 9,500lb classes. 11,500 lb, 13,500 lb, and 15,500 lb classes are allowed any 3" in by 3" out turbocharger.
5. Weight classes and the maximum horsepower ratings as taken from www.tractordata.com
- 9,500lb. - max PTO HP 105
- 11,500lb, 13,500lb, & 15,500lb - max PTO HP 200.
Note: A dynamometer can be used at club discretion.
6. Maximum usable tire sizes for farm stock classes are as follows:
- 4,500lb - 14.9x26 or 13.6x38 or 12.4x42
- 5,500lb - 18.4x26 or 16.9x38
- 7,500lb - 18.4x38
- 9,500lb - 20.8x38 or 18.4x42
- 11,500, 13,500, & 15,500lb - Max Width of 24.5"
Sizes Determined By FIRESTONE Tire Finder Website Using FIRESTONE FIELD & ROAD DATA for GROSS FLAT PLATE. RIM WIDTH MAY NOT BE WIDER THAN TIRES BEING USED EX-15.5" tire on a 15.5" rim.
7. Contest open to two wheel drive tractors with rubber tires (no sharpened/cut tires, no dual tires, no tire studs or chains permitted). Four-wheel drive tractors allowed if front wheels are disengaged.
8. Drawbar is to be stationary in all directions with no more than 1” of movement in any one direction.
- Maximum height of drawbar to be 20”.
- Length of drawbar to be no less 24” (18” for 4,500, 5,500, and 7,500 lb. classes) from the center of the rear axle.
- Drawbar must be equipped with a steel-hitching device not more than 1” thickness and minimum 3" x 3.5" diameter opening.
- Cross sectional thickness must be 7/8” minimum.
- Pulling point may not be more than 1 ¼” from back edge of hitching device.
- PTPA suggests fastening the hitching device with one 7/8” or two 5/8” grade 5 bolt or bolts.
- No top bracing except complete factory setup.
- No quick hitch type adapters allowed on tractors.
- No verticle hitches or clevis' allowed. A twist clevis is permitted if securely fastened to drawbar so it does not move.
9. No portion of tractor or ballast may interfere with sled or sled hitch during pull.
10. No weight frame or weight may extend more than 24” beyond the forward most point of the tractor. All weight frames and weights must be stationary and safely secured to the tractor and must not extend rearward beyond the rear tires.
- No weights may be located in a position, which could hinder safe operation of the tractor.
- No weights on the drivers seat.
- No weights or brackets may exceed in width 12” beyond the tires.
- Any ballast or external parts lost while hooked to the sled will be cause for disqualification. Internal parts excepted.
- No weights or brackets to be closer than 8” to the drawbar point of hook.
11. All tractors must be equipped with workable rear wheel brakes.
12. Maximum allowable RPM's:
- 4,500lb & 5,500lb classes limited to 2,200rpms
- 7,500lb & 9,500lb classes limited to 2,800rpms
- 11,500, 13,500, & 15,500lb classes limited to 3,000rpms
- All John Deere 2 cylinders are limited to 1,500rpms
- PLEASE NOTE: 5500lb class tractors must remain at 2200rpm if also running in the 7500lb class.
13. Pace Speeds are as follows:
- 7500&9500lb 5mph.
- 11,500 through 15,500lb 6mph.
14. During a pull the governor must be in working condition and must not allow the engine to exceed max allowed rpm under load.
15. Any rotating PTO shaft that cannot be stopped by the driver’s hand must be shielded.
16. All stock tractors must be tech inspected before being allowed to hook and compete. After a tractor has been inspected and passed, a stock tractor tech form must be signed by the tech inspector and the driver.
17. Stock tractors can compete in no more than two (2) classes with that particular tractor.
18. All contestants must be at least 18 years of age or 14 years of age with a parent or guardians signed consent.
19. The use if torque converters, automatic shifts, etc. will be permitted if original factory equipment for make and model being entered. No slipper clutches allowed.
NPJ ENHANCED FARM STOCK TRACTORS (NON-PACE)
All rules stated above for Stock Tractors apply with the addition of the following:
1. All tractors must equipped with a hand operated, spring return (deadman) throttle. Proper operation will be checked during inspections.
2. Wheelie bars are required on all tractors:
- Pads on bottom of bars to be a minimum of 5 inches square.
- Pads to be a minimum of 32 inches rearward from the center of the rear end housing. Pads maximum of 10 inches off the ground.
- Wheelie bars and hitch may not be connected
- Outside to outside of wheelie bar pads to be a minimum of 20 inches
- Wheelie bars must support the weigh off the tractor for the weight class being pulled.
3. All tractors must be equipped with a seat belt (lap belt).
4. All tractors must have a factory style R.O.P.S. (roll over protection system)
5. All spark if ignition tractors must have a working kill switch. Diesel Tractors Must have an air shut off in the form of a flapper over the intake or guillotine. All shutoff will be tested during inspections.
NPJ RULES FOR HOT STOCK NON TURBO TRACTORS
Weight Classes 4,500, 5,500 and 6,000
1. Tractor must have a stock appearance (example: A John Deere must have a John Deere engine, rear end and original sheet metal intact.
2. Engine change is allowed - all engines must be of the type used by the factory and must bolt up without the use of an adaptor plate.
3. Front end may be home made but must maintain stock appearing wheelbase and stock engine location. Maximum length 12 feet from the center of the rear axel to the furthest point forward, including weights.
4. Exhaust must discharge upward 18 inches above the hood line.
5. Cut tires are allowed
6. Weights:
- Weights may not be extended forward more than 12 feet from the center of the rear axel.
- All weight frames and weights must be stationary and safely secured to tractor.
- Weights may not extent rearward beyond rear tires.
- No weights may be located in a position which could hinder safe operation of the tractor.
- No ballast weights on tractor seat and or deck of the tractor.
- No weights or brackets may exceed 12 inches in width beyond the tires.
- No weights or brackets to be closer that 8 inches to draw bar hook point.
7. Maximum Tire Size 18.4 X 38
8. All tractors must be equipped with working rear brakes.
9. Fenders are required on all tractors.
10. Wheelie bars are required on all tractors:
- Pads on bottom of bars to be a minimum of 5 inches square.
- Pads to be a minimum of 32 inches rearward from the center of the rear end housing. Pads maximum of 10 inches off the ground.
- Wheelie bars and hitch may not be connected
- Outside to outside of wheelie bar pads to be a minimum of 20 inches
- Wheelie bars must support the weigh off the tractor for the weight class being pulled.
11. Carburetor clarification for all non turbo classes - one carburetor only and it must be an updraft type.
12. Hitch height is 20 inches. Hitch length is 18 inches from the center of the rear axel to the hook point. Drawbar must be rigid in all directions. No movement is allowed while pulling. Drawbar must be parallel to the ground. Hitch must be horizontal, not vertical.
13. Tractors whose RPMs exceed 3,000 are required to have a steel flywheel and use a safety shield in the form of either:
- A scatter safety blanket.
- 4 inch wide X 3/8 thick steel around the flywheel area.
14. Torque converters and automatic shifts are permitted.
15. Legal fuels are: gasoline, diesel fuel, and LP Propane. All forms of nitro-methane and propylene oxide are not allowed.
16. Kill Switch:
- For Spark ignition engines, the kill switch must either break or ground the ignition circuit and must break electric power to an electric fuel pump(s) if so equipped
- For Diesel Engines. the shut off cable must be activate the air shutoff to the engine. The air shutoff cable must be a positive type enclosed cable.
- The kill switch must be mounted independently of the draw bar and or wheelie bars.
- Kill switch to be located in the rear center of the vehicle, 48 inches above the ground and within 6 inches of the center of the hook point.
- Kill switch must have a minimum of a 2 inch diameter solid ring with a minimum of 1/8 inch cross section thickness.
17. Driver must wear shirt, shoes, and long pants.
NPJ Street Stock 4 X 4 Trucks
1. Weight Class 6500lbs trucks
2. D.O.T. stamped approved street tires only. No cuts, grooved, bar, or tractor type tread.
3. Truck must be stock appearing with all windows, hood, fenders, doors, full bed with floor, tailgate or net required. Flat bed or homemade bed allowed, but must cover tires and be stock length.
4. Pump gas or race fuel ONLY. No alcohol, nitro or nitrous. If nitrous equipped, bottle must be removed.
5. Any type intake manifold and one single four barrel carburetor (or smaller). Air cleaner is required. Factory fuel injection or throttle body system allowed.
6. Current registration, inspection, and insurance card required. Truck must be street legal. All info will be required at event registration & will be checked.
7. All added weight must be secured in the truck bed. No weights allowed in the cab. No front weights or weight boxes allowed.
8. Maximum hitch height allowed can be 26'' from top of hitch to level ground. Hitch hooking point is to be the furthest point to the back of the truck, (or the first thing to hit you if you would back into a wall!!) Hitch must be a receiver type O.E.M. designed factory manufactured towing hitch, or standard factory bumper hitch. No special pulling or modified receiver hitches allowed. Must have 3 - 3 1/2 inch opening. No vertical hitch or opening, no clevises allowed .
9. Receiver hitch must be in place at scale weigh-in.
10. Snowplow frames and brush guards are allowed. No home made bumpers, brackets or weights boxes allowed in this class. Must have stock appearing front bumper.
11. No open exhaust permitted. Cat-back aftermarket exhaust systems are permitted. Mufflers are required and headers are allowed.
12. Drive shaft loops are highly recommended, but are not mandatory.
13. ABC fire extinguisher (minimum 2 1/2 lbs.) must be in cad, within driver's reach.
14. Seat belts AND helmets must be used when pulling.
15. NO solid/blocked suspensions, or leaf spring clamps. If equipped with air bags, the line must be disconnected at the bags.
NPJ Pro Stock 4 X 4 Trucks
1. Weight Class 6200 lbs
2. Truck body must be complete with hood, doors, and bed. The bed must have the floor in place or a top cover in place. No fiberglass bodies allowed. All DOT window glass must be in place.
3. Weight box or weight bracket allowed to be 193" from the center of the rear axle to the front of weight. Weights can not be more than 60" from the center of the front axle. Weights in the bed must be secured. No weights are allowed in the cab.
4. Any DOT approved tire allowed. Maximum Tire Size 36 X 16. Tire sharpening allowed, no more than 3/32" (0.093) clearance in backside of tread. No cut, grooved bar tread, or tractor type tires allowed.
5. Pump gas or racing fuel allowed. No alcohol, Nitro or Nitrous allowed. Any truck that is equipped with a Nitrous bottle, it must be removed from the truck.
6. Open headers allowed. Exhaust must discharge under the truck to the rear. No side or down discharge of exhaust toward the ground allowed.
7. Any intake manifold and single carburetor combination allowed. Single carburetor may be any size. Engine must be naturally aspirated, No supercharger or turbocharger allowed.
8. Kill switch or breakaway switch required within 24” of hitch point. All kill switches will be tested at the scale for proper operation. Kill switch must kill the engine and any electric fuel pumps.
9. Trucks with Standard transmissions must have a steel flywheel and a blow-proof bell housing or S.F.I. blanket. All automatic transmissions must have an S.F.I. blanket.
10. Drive Shaft loops for the front and rear drive shafts and U-joint shields are required. All U-joints must be shielded 360 degrees with 3/8 aluminum or 5/16 steel. All shields must be 6” long minimum and must be centered over the U-joints. The inside of the shield must not be more than 2” larger then the U-joint. Each truck must have 1 loop for the front drive shaft and 3 loops for the rear drive shaft.
11. All drive line components must be for 1 ton and under trucks. No drop boxes or reversers.
12. Maximum hitch height allowed is 26” from the top of the hitch to level ground. (Hitch can be lower) Hitch must be a receiver type-towing hitch or a special constructed pulling hitch. No bumper hitches. Hitch must be rigid in all directions with a minimum of a 3” to 3 1/2" opening. No vertical hitch or openings. From point of hook to centerline of rear axle shall be no less than 30% of truck wheelbase and shall not slope any greater than 33 degrees to hitch point. No hitch supports or adjusters. If the hitch is fastened to the rear axle housing it shall be above the center line of the rear axle. The pivot pin of the drawbar can be no further forward than the center line of the rear axle.
13. Suspension modifications are allowed. Any blocked or solid suspension must be safely fabricated and securely fastened to the frame as determined by the tech inspector. No Springs required.
14. Each truck is required to have an ABC fire extinguisher in the cab and within reach of the driver. Extinguisher must be a minimum of 2 ½ lbs.
15. Driver must wear a seat belt, fire suit (jacket & pants), helmet, and must wear leather boots or SFI type fireproof shoes while pulling.
16. Truck must have operating brakes.
17. Truck must have rear bumpers at least 8” vertical in height and with a maximum height of 24” off the ground.
18. Each truck must have a fan shroud and the Radiator must be ahead of the motor between the grill and the engine.
19. No gas tanks, fuel lines or batteries allowed in the truck cab unless factory installed. If a fuel cell is used the replace the original tank, the fuel cell must be securely mounted in the bed of the truck and shielded entirely by .60 steel or aluminum. A fuel tank may be mounted in front of the truck between the weightbox and grille of the truck.
20. 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.
NPJ 8000lb Street Legal Diesel Truck Rules
Work Stock
The Work Stock (WS) Class is designed for daily-driven, on the road pickup trucks (full-bodied diesel pickup truck). Valid DOT registration and license plates are mandatory. The vehicle may be two or four-wheel drive.
Regulations:
Ballast: Ballast is permitted. Hanging front weights are prohibited. Ballast may be added in the bed of the truck. If used, ballast must be securely fastened to the bed of the truck. Final decisions rest with the tech official.
Batteries: The batteries must be securely mounted. They may not be located in the driver compartment or forward of the radiator core support.
Body: The Body must be an OEM truck body, including the full bed floor. The body must retain all original sheet metal. Metal After-market hoods are permitted, Fiberglass is prohibited. The hood must be closed and securely latched while the vehicle is hooked to the sled. The complete OEM firewall and OEM floor pan is mandatory.
Brakes: Four-wheel hydraulic brakes are mandatory and must be functional.
Chassis: The OEM chassis is mandatory. The engine must be in the OEM location for the body being used. The vehicle must retain the full OEM chassis. Wheel tubs, back-half conversions, tube chassis, etc., are prohibited.
Cooling System: Radiators must be in the stock location and must be of at least stock size.
Credentials: All drivers must have a valid state driver’s license, inspection, registration, & current insurance in hand at time of event sign up.
Driveline: An OEM transmission and transfer case are mandatory. They must have been an option on a one-ton or smaller pickup.
Driver Restraint System: The OEM restrain system is mandatory and must be worn.
Engine: The engine is limited to a stock-appearing, OEM make-specific compression ignition engine. Nitrous Oxide is prohibited along with other oxygen extenders as well as the use of propane is also prohibited. All system components MUST be removed from the truck.
Exhaust: The exhaust must exit rearward of the driver's compartment. Stacks exiting through the hood or fender well are prohibited. If the muffler or catalytic converter have been changed from stock, two 3/8 inch diameter bolts must be installed through the exhaust pipe in a cross pattern within one inch of each other as close to the turbo as is practical.
Fire Extinguisher System: A fire extinguisher system is permitted. It must be securely mounted.
Fuel: The fuel must be pump #1 or #2 diesel only. Soy/Bio-diesel fuel is permitted. Off-road diesel fuel is prohibited.
Fuel Injection Pump: The fuel injection pump is limited to a stock appearing, OEM engine model-specific pump only. The use of multiple high-pressure common-rail fuel pumps is prohibited. Power Stroke engines with a single factory turbo may utilize a second HPOP. Pumps from different years in the same engine model may be interchanged.
Fuel System: The OEM fuel tank is mandatory and must be used. Racing fuel cells are prohibited and must be removed from the vehicle.
Harmonic Balancer: All engines turning 4500 RPM and higher must be equipped with a harmonic balancer or damper meeting SFI Spec 18.1.
Hitch: The hitch must be a receiver-style hitch; reinforcements are permitted. Reinforcements must not extend forward of the centerline of the rear axle. Trick hitches are prohibited. The hooking point must be in the rear most point on the vehicle and must be rearward of the stock location of the tailgate. The hitch must be horizontal to the ground and stationary in all directions. Bumpers may be notched or removed. The hitch's height from the ground may not exceed 26 inches. The hooking point must have a minimum 3 x 3.5inch inside diameter opening for the sled hook. No clevis or vertical hitches allowed.
Interior: A complete interior, including dashboard, door panels, headliners, etc., is mandatory. Two matching front seats are mandatory. Aftermarket seats are permitted; they must be fully upholstered. All factory controls (lights, signals, horn, windows, wipers, etc.) must be retained and be operative. The use of hand throttle controls is prohibited.
Rear End: Non-OEM rear end housings are prohibited. It must have been an option on a one-ton or smaller pick up. Rear axle bolts must be covered by a cap or shield.
Steering: The vehicle must retain the full, original OEM steering gear. The vehicle must retain the original OEM power steering assistance, if it was so equipped. Additional stabilizers are permitted. Non-OEM power assist methods are prohibited.
Street Equipment: Complete headlight and taillight assemblies (all) are mandatory and must be operative. Complete OEM windshield and windows are mandatory. Windows must be operative per factory specifications; that is, they must open and close via OEM electrical or mechanical means.
Suspension, Front: The upper mounting point for strut assemblies must be in the factory location. Adjustable caster/camber pillow ball mounts are permitted. The lower control arm may be strengthened provided factory-mounts are permitted. The lower control arm may be strengthened provided factory-mounting points to chassis are maintained. The lower mounting point for the strut assembly may be modified for improved caster or camber. Strut tower braces, lower tie bars, sway bars, and limit straps are permitted. Traction bars and devices are permitted.
Suspension, Rear: An OEM-style suspension is mandatory. Lowering or raising the vehicle height with suspension modifications is permitted. Traction bars and devices are permitted. They must be bolt-on only; welds are permitted for attachment to frame or axle housing. All OEM suspension mounting points must be retained and used. Sway bars, limit straps, and camber kits are permitted. The rear suspension must maintain a minimum compression shock travel of one inch compression. Stops may be adjustable. All rear suspensions must use at least one working shock absorber per wheel. Airbag spring assistance is permitted; airbag compressors must be disconnected, no in-cab controls.
Tires: The tires must be DOT street tires. Cut tires are prohibited.
Tow Vehicles: Tow vehicles are prohibited.
Transfer Case: Non OEM transfer cases are prohibited. The transfer case must have been an option on a one-ton or smaller pick-up truck.
Transmission, Automatic: Non-OEM transmissions are prohibited. All vehicles with engines running 4500 RPM or more using an automatic transmission must be equipped with a transmission shield meeting SFI Spec 4.1 and must be labeled accordingly. A blanket-type shield is permitted; it must be appropriately labeled as meeting SFI Spec 4.1 and it must extend from the rear of the block to the front of tail housing with a minimum of six inch overlap where it is fastened. All non-blanket-type shields must incorporate two (or one, per manufacturer’s instructions) 3/4 inch by 1/8 inch straps that bolt to the shield on each side and pass under the transmission pan unless the transmission pan is labeled as meeting SFI Spec 4.1. All vehicles with engines running 4500 RPM or more and using an automatic transmission must be equipped with a flex plate meeting SFI Spec 29.1 and be covered by a flex plate shield meeting SFI Spec 30.1.
Transmission, Manual: Non-OEM transmissions are prohibited. A clutch meeting minimum SFI Spec 1.1 or 1.2 is mandatory on all vehicles with engines running 4500 RPM or more. All manual transmissions must be clutch assisted. Sequential shifters are prohibited. All vehicles with engines running 4500 RPM or more equipped with a manual transmission must have a flywheel shield labeled as meeting minimum SFI Spec 6.3 or greater. Applications for which an SFI Spec flywheel shield is not available may use a properly attached SFI 4.1 or 4.2 blanket that completely covers the bell housing it must be attached to the block and extend rearward to the transmission with a minimum six inch overlap where it is fastened.
Turbocharger: The turbocharger is limited to a stock-appearing, OEM/Factory make-specific charger only. Turbochargers from different years in the same make may be interchanged. 6.4 liter Power Stroke engine may utilize the factory twin-turbo configuration.
Water Injection: Water injection is prohibited. All system components must be removed from the truck.
Wheelbase: The vehicle must retain the original factory wheelbase and track width.
NPJ 2.8 Turbo Class
Weight: 8000lbs. Maximum, with driver.
REGULATIONS:
Ballast: Ballast is permitted. Hanging weights must not extend more than 60 inches from the centerline of the front axle.
Batteries: The batteries must be securely mounted. They may not be located in the driver compartment or forward of the radiator core support.
Body: The body must be the OEM truck body, including the full bed floor. The body must retain full sheet metal. Metal after-market hoods are permitted. Fiberglass is prohibited. The hood must be closed and securely latched while the vehicle is hooked to the sled. The complete OEM firewall and complete OEM floor pan is mandatory.
Brakes: Working minimum of front hydraulic brakes required.
Chassis: The OEM chassis is mandatory. The engine must be in the OEM location for the body used. The vehicle must retain the full OEM chassis. Wheel tubs, back-half conversions, tube chassis, etc are prohibited.
Cooling System: Radiators must be in the stock location and be of at least stock size.
Credentials: All drivers must have a valid state drivers license.
Driveline: OEM transmission and transfer cases are mandatory. They must have been an option on a one-ton or smaller pickup.
Driver Restraint System: The OEM restrain system is mandatory and must be worn.
Driveshaft Loops: All trucks must have at least six inch u-joint shields around the rear u-joint constructed of at least 1/4 inch steel or 3/8 inch aluminum that will safely contain the u-joint and the end of the rear shaft. All the shields must be securely mounted to the vehicle. Any front shaft u-joint that is visible from the side of the truck must be shielded to contain the u-joint and the end of the shaft.
Engine: The engine block must have been available as a factory option on a one-ton or smaller pickup truck. Blocks must circulate coolant freely. The use of concrete or other block fillers is prohibited. Electric fans are permitted. Alternators must be present and powered via the crankshaft. Water pumps must be present, but may be powered electrically. NITROUS OXIDE and other oxygen extenders as well as the use of PROPANE is also prohibited. All system components MUST be removed from the truck. No RPM limit, aftermarket intake manifolds allowed.
Exhaust: All vehicles must be equipped to direct exhaust upward. Two 3/8 inch diameter bolts must be installed through the exhaust pipe in a cross pattern within one inch of each other as close to the turbo as is practical.
Fire Extinguisher System: A fire extinguisher system is permitted. It must be securely mounted.
Fuel: The fuel must be pump #1/#2 diesel only. Soy/Biodiesel fuel is permitted. Off-road diesel fuel is prohibited.
Fuel Injection Pump: The fuel injection pump is limited to a stock-appearing, OEM engine make-specific pump only. Dual high-pressure common-rail fuel pumps or HPOPS are permitted. The P7100 injection pump, if equipped, may utilize either a stock or agricultural governor.
Harmonic Balancer: All engines turning 4500 RPM and higher must be equipped with a harmonic balancer or damper meeting SFI Spec 18.1.
Hitch: The hitch must be a receiver-style hitch; reinforcements are permitted. Reinforcements must not extend forward of the centerline of the rear axle. Trick hitches are prohibited. The hooking point must be the rear-most pint on the vehicle and must be rearward of the stock location of the tailgate. The hitch must be horizontal to the ground and stationary in all directions. Bumpers may be notched or removed. The hitch's height from the ground may not exceed 26 inches on 4wd units. The hooking point must have minimum 3.750 inch inside diameter opening for the sled hook. No clevis allowed.
Master Cutoff: All trucks must be equipped with a master cutoff. A sled and driver-operated spring-loaded emergency air shutoff is mandatory. The cable must terminate into a two inch diameter steel ring.
Rear End: Non-OEM rear-end housings are prohibited. The rear end must have been an option on a one-ton or smaller pick up. Rear axle bolts must be covered by a cap or shield.
Steering: Additional stabilizers are permitted to OEM steering system. Hydraulic steering is permitted.
Suspension, Front: The factory suspension configuration must be retained. The upper mounting pint for strut assemblies must be in the factory location. Adjustable caster/camber pillow ball mounts are permitted. The lower control arm may be strengthened provided factory-mounting points to chassis are maintained. The lower mounting point for the strut assembly may be modified for improved caster or camber. Strut tower braces, lower tie bars, sway bars, and limit straps are permitted. Traction bars and devices are permitted. The final decision rests with the NADM Technical Department.
Suspension, Rear: An OEM-style suspension is mandatory. Traction bars and devices are permitted; they must be bolt on only; welds are permitted for attachment to frame or axle housing. Control arms may be strengthened or replaced, provided all original mounting points are retained. Strut tower braces, lower tie bars, sway bars, limit straps, and camber kits are permitted. The rear suspension may be bolted solid to eliminate travel.
Tires: The tires must be DOT street tires. Cut tires are prohibited.
Transfer Case: Non-OEM transfer cases are prohibited. It must have been an option on a one ton or smaller pickup.
Transmission, Automatic: Non-OEM transmissions are prohibited. All vehicles with engines running 4500 RPM or more and using an automatic transmission must be equipped with a transmission shield meeting SFI Spec 4.1 and must be labeled accordingly. A blanket-type shield is permitted; it must be appropriately labeled as meeting SFI Spec 4.1 and it must extend from the rear block to the front of tail housing with a minimum six inch overlap where it is fastened. All non-blanket-type shields must incorporate two (or one, per manufacturers instructions) 3/4 inch by 1/8 inch straps that bolt to the shield on each side and pass under the transmission pan unless the transmission pan is labeled as meeting SFI Spec 4.1. All vehicles with engines running 4500 RPM or more and using an automatic transmission must be equipped with a flex plate meeting SFI Spec 29.1 and be covered by a flex plate meeting SFI Spec 30.1.
Transmission, Manual: Non-OEM transmissions are prohibited. A clutch meeting minimum SFI Spec 1.1 or 1.2 is mandatory on all vehicles with engines running 45oo RPM or more. All manual transmissions must be clutch assisted. Sequential shifters are prohibited. All vehicles with engines running 4500 RPM or more and equipped with a manual transmission must have a flywheel shield labeled as meeting a SFI Spec 6.3 or greater. Applications for which and SFI Spec flywheel shield is not available may use a properly attached SFI 4.1 or 4.2 blanket that completely covers the bell housing; it must be attached to the block and extend rearward to the transmission with a minimum six inch overlap where it is fastened.
Turbocharger: The vehicle is limited to a single turbocharger; the inducer bore on the compressor housing may be no larger than 2.8 inches measured at the smallest diameter area of the compressor wheel. A bushing may be used to downsize the compressor housing ahead of the wheel. If a bushing is used. it must be round metallic, at least 3/4 inch long, mounted within 0.050 inch of the compressor wheel, and the inside diameter of the bushing may not exceed the 2.8 inch limit. Bushings must be securely fastened to the compressor housing. The inlet will be measured using a 2.85 inch plug or internal calipers. A stock map width enhancement (MWE) groove is allowed. No MWE groove will be allowed that has a width greater than 1/4 inch. All provisions allowing air to the wheel other than via the bore and the MWE groove are prohibited.
Water Injection: Water injection is prohibited. All system components must be removed from the truck.
Wheelbase: The vehicle must retain the original unaltered factory wheelbase and track width. Front dual-wheel spacers may be used only with accompanying positive-offset dually style wheels.
