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WORK STOCK RULES NADM 2010

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Work Stock

The Work Stock (WS) class is designed for daily-driven, on the road pickup trucks (full-bodied

diesel pickup trucks). Valid DOT registration and license plates are mandatory. The vehicle may

be two or four-wheel drive.

 

Designation: WS followed by competition number

 

Weight breaks: 8000 lbs. Weight is with driver

 

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. Final decisions rest with the

NADM Technical Department.

 

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 OEM floor pan is mandatory.

 

Brakes: Four-wheel hydraulic brakes are mandatory.

 

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: 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 restraint 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: All vehicles must be equipped to direct exhaust upward. 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/#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. Powerstroke 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 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 on 4wd units and 30 inches on 2wd units. The

hooking point must have a minimum 3.750-inch inside diameter opening for the sled hook.

The hooking point will be measured to the center of the clevis loop.

 

Interior: A complete interior, including dashboard, door panels, headliner, 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 are

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-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.

Final decisions rest with the NADM Technical Department.

 

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 must 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.

 

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. Aftermarket torque

converters, valve bodies and internal components are permitted. Transmission brakes

are prohibited. Any non-OEM floor-mounted automatic transmission shifter must be equipped

with a spring-loaded positive reverse lockout device to prevent the shifter from

accidentally being put into reverse gear. A functional neutral safety switch is mandatory. All

transmission lines must be metallic or high-pressure-type hose. 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 of the 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 shield

meeting SFI Spec 30.1.

 

Transmission, Manual: Non-OEM transmissions are prohibited. Aftermarket internal

components are permitted. 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 and 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

Powerstroke engines 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.

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Work Stock

The Work Stock (WS) class is designed for daily-driven, on the road pickup trucks (full-bodied

diesel pickup trucks). Valid DOT registration and license plates are mandatory. The vehicle may

be two or four-wheel drive.

 

Designation: WS followed by competition number

 

Weight breaks: 8000 lbs. Weight is with driver

 

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. Final decisions rest with the

NADM Technical Department.

 

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 OEM floor pan is mandatory.

 

Brakes: Four-wheel hydraulic brakes are mandatory.

 

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: 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 restraint 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: All vehicles must be equipped to direct exhaust upward. 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/#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. Powerstroke 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 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 on 4wd units and 30 inches on 2wd units. The

hooking point must have a minimum 3.750-inch inside diameter opening for the sled hook.

The hooking point will be measured to the center of the clevis loop.

 

Interior: A complete interior, including dashboard, door panels, headliner, 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 are

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-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.

Final decisions rest with the NADM Technical Department.

 

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 must 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.

 

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. Aftermarket torque

converters, valve bodies and internal components are permitted. Transmission brakes

are prohibited. Any non-OEM floor-mounted automatic transmission shifter must be equipped

with a spring-loaded positive reverse lockout device to prevent the shifter from

accidentally being put into reverse gear. A functional neutral safety switch is mandatory. All

transmission lines must be metallic or high-pressure-type hose. 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 of the 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 shield

meeting SFI Spec 30.1.

 

Transmission, Manual: Non-OEM transmissions are prohibited. Aftermarket internal

components are permitted. 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 and 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

Powerstroke engines 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.

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Here are the updated WorkStock '17 NADM Rules

 

WorkStock / Hot-WorkStock
 
The Work Stock (WS) and Hot Work Stock class is designed for daily-driven, on the road pickuptrucks (full-bodied diesel pickup trucks). Valid DOT registration and license plates aremandatory. The vehicle may be two or four-wheel drive.
 
Designation: WS/HWS followed by competition number
Weight breaks: WS-8500 lbs. HWS -8000 Weight is with driver
 
REGULATIONS:
 
Ballast (WS):
Ballast is permitted. Hanging front weights are prohibited. Ballast may be added inthe bed of the truck. If used, ballast must be securely fastened to the bed. No underslung weightboxes or non-production weighted bumpers. Final decisions rest with the NADM TechnicalDepartment.
 
Ballast (HWS): Ballast is permitted. Ballast may be added in the bed of the truck. If used, ballast must be securely fastened to the bed. No underslung weight boxes or non-production weightedbumpers. Final decisions rest with the NADM Technical Department.
 
Batteries:
The batteries must be securely mounted. They may not be located in the drivercompartment or forward of the radiator core support.
 
Body:
The body must be the OEM truck body. The body must retain full sheet metal. Metal aftermarket hoods are permitted. Fiberglass hoods are permitted with a sheet metal or aluminum skinshield underneath of at least .060” thick. 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. A factory installed pickup bed or commercial style aftermarket bed must be installed.
 
Brakes:
Four-wheel hydraulic functional brakes are mandatory.
 
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 driver’s license.
 
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 restraint system is mandatory and must be worn.
 
Engine (WS):
The engine is limited to a stock-appearing, OEM make-specific compression ignition engine.
 
Engine (HWS):
The engine block must have been available as a factory option on a one ton or smaller pickup truck. Cubic inch limit of 444 CI. Blocks must circulate coolant freely. No hardfilled blocks. Electric water pumps allowed. Electric cooling fans allowed. All other accessories must be powered by factory belting.
 
Exhaust:
All vehicles must be equipped to direct exhaust upward. 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, minimum grade 5, 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:
A fire extinguisher is mandatory. An on-board fire suppression system is permitted.
 
Fuel:
The fuel must be pump #1/#2 diesel only. Soy/Bio-diesel fuel is permitted. Off-road diesel fuel is prohibited. 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.
 
Fuel Injection Pump (WS):
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. Powerstroke engines are limited to single HPOP as well. Pumps from different years in the same engine model may be interchanged. Cylinder number specific (IE: 6-cylinder pump on a 6-cylinder engine). Sigma or 12 cylinder pumps are prohibited.
 
Fuel Injection Pump(HWS):
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 ispermitted. Powerstroke engines with HUEI fired may utilize a second HPOP. Pumps from different years in the same engine model may be interchanged. Cylinder number specific (IE: 6-cylinder pump on a 6-cylinder engine). Sigma or 12 cylinder pumps are prohibited.
 
Fuel System:
The OEM fuel tank is mandatory and must be used. Racing fuel cells are prohibitedand 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 or to the axle housing itself. Trick hitches are prohibited. The hooking point must be 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 on 4wd units and 30 inches on 2wd units. The hooking point must have a minimum 3.750-inch inside diameter opening for the sled hook. The hooking point will be measured to top of hitch hook point. NO CLEVIS HITCHES ALLOWED
 
Inter coolers:
Factory style or aftermarket air-air coolers are permitted. Water-to-air coolers are prohibited. Any means of cooling the air before the engine, except the air to air cooler is
prohibited.
 
Interior:
A complete interior, including dashboard, door panels, headliner, 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.
 
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-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. Final decisions rest with the NADM Technical Department.
 
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 must 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.
 
Tires:
The tires must be DOT street tires. Cut tires are prohibited. Trucks utilizing dual rear wheels will be limited to a tire with maximum width of 8’’ of tread per tire.
 
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 pickup truck.
 
Transmission, Automatic:
Non-OEM transmissions are prohibited. Aftermarket torque converters, valve bodies and internal components are permitted. Transmission brakes are prohibited. Any non-OEM floor-mounted automatic transmission shifter must be equipped with a spring-loaded positive reverse lockout device to prevent the shifter from accidentally being put into reverse gear. A functional neutral safety switch is mandatory. All transmission lines must be metallic or high-pressure-type hose. 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 of the 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 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. Aftermarket internal components are permitted. 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 and 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 (WS):
The turbocharger is limited to OEM/Factory make-specific charger only. Turbochargers from different years in the same make may not be interchanged, no adapters, no changes to factory turbo to change its size or internals will be accepted. 6.4 liter Powerstroke engines may utilize the factory twin-turbo configuration and may not be modified in any way. The driver will be responsible for making the compressor wheel and bore accessible for Tech Officials to measure bore and inspect the compressor wheel. All final decisions will be at the discretion of the tech official.
 
Turbocharger (HWS):
Hot Work Stock turbos class is to be a stock appearing turbo with a maximum inlet size of 2.58’’. Turbo will be plugged with a 2.60’’ plug. Factory compound turbos for 6.4l powerstrokes will be checked at low pressure turbo inlet with same plug. The driver will be responsible for making the compressor wheel and bore accessible for Tech Officials to measure bore and inspect the compressor wheel.
 
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.
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