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THE STREET STOCK CLASS IS DESIGNED FOR DAILY-DRIVEN, ON-THE-ROAD PICKUP TRUCKS
(FULL-BODIED GASOLINE PICKUP TRUCKS). VALID D.O.T. REGISTRATION AND LICENSE PLATES ARE MANDATORY.
THE VEHICLE MUST BE FOUR-WHEEL DRIVE.)
1. MAXIMUM WEIGHT 6,500 LBS INCLUDING FUEL, OIL, COOLANT, DRIVER, READY TO
COMPETE. NO FRONT HANGING WEIGHT ALLOWED.
2. 4X4 STREET LEGAL PICKUP TRUCKS ONLY. ONLY FACTORY OFFERED ENGINES ARE ALLOWED
IN THIS CLASS.
3. MUST HAVE SOLID FLOORED BED.
4. TRUCKS CAN USE ANY OCTANE RATING COMMERCIALLY AVAILABLE PUMP GAS. NO
ALCOHOL, METHANOL, NITROMETHNAE, NITROUS, OR THE LIKE.
5. ONLY ONE FOUR BARREL CARBURETOR ALLOWED (4150 FLANGE ONLY). O.E.M. FACTORY
FUEL INJECTION SYSTEMS ALLOWED. NO FORM OF FORCED INDUCTION UNLESS OEM
EQUIPPED.
6. ENGINE MODIFICATIONS NOT ALLOWED: DOMINATOR OR PREDATOR CARBURETORS, ANY
4500 FLANGE INTAKE MANIFOLD OR CABURETOR, ANY CARBURETOR SPACER MORE THAN
2” THICK, HOMEMADE CARBURETOR SPACERS OR WOODEN CARBURETOR SPACERS, CRANK
TRIGGER IGNITIONS, SHEET METAL INTAKES, DRY SUMP OIL SYSTEMS, NON-OEM FUEL
INJECTION SYSTEMS, DIGITAL OR PROGRAMABLE AFTERMARKET IGNITION SYSTEMS
7. THE VEHICLE MUST HAVE A WORKING SUSPENSION, FRONT AND REAR. BLOCKED SOLID
REAR SUSPENSION IS ALLOWED BUT MUST BE ABLE TO REMOVE. MUST HAVE STOCK
FRAME FOR MAKE AND MODEL OF VEHICLE. LIFT KITS ALLOWED. REAR TRACTION BARS
ALLOWED, MUST BE BOLT-ON ONLY, MUST BE REMOVABLE.
8. HITCH MUST BE STOCK REESE STYLE, MUST BE SOLID IN ALL DIRECTIONS. NO PULLING
FROM BUMPERS. MUST SUPPLY 3.75” OPENING CLEVIS. MAXIMUM HITCH HEIGHT 24
INCHES.
9. D.O.T. STREET APPROVED TIRES ONLY ALLOWED; TIRE SIZE MUST BE STAMPED ON
SIDEWALL.
10. ANY VEHICLE, DAMAGE, DRIVING STYLE DEEMED UNSAFE BY ANY OFFICIAL WILL BE
GROUNDS FOR DISQUALIFICATION.
11. ALL BODY PARTS MUST REMAIN INSIDE THE CAB OF THE TRUCK WHEN COMPETING. SEAT
BELTS MUST BE IN USE. HEADLIGHTS AND FOG LIGHTS WILL NOT BE ON WHILE VEHICLE IS
ON THE TRACK!!! ANY PULLER THAT TURNS THEIR HEADLIGHTS OR FOG LIGHTS ON BEFORE
THE RED FLAG IS SHOWN WILL BE AUTOMATICALLY DISQUALIFIED!
12. ALL SAFETY RULES APPLY. NO RIDERS IN VEHICLE.
HELMET, FIRE SUIT, DRIVESHAFT LOOPS, TRANSMISSION/CLUTCH BLANKET, AND KILL SWITCH REQUIRED.
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1. Maximum weight of 6400 lbs.
2. Front weights may not extend more than 60” from centerline of the front axle. No
loose weights allowed anywhere in the vehicle. Front weight boxes will be rigid &
have a minimum of 8” ground clearance.
3. OEM frame rails only, reinforcements & bracing is allowed. No tube chassis
allowed.
4. OEM steel truck bodies only. No flatbeds, no fiberglass or plastic bodies allowed.
5. Front tow hitch must be strong enough to pull, push, or lift the vehicle. 3” hole is
required.
6. No mud flaps or dirt deflectors allowed.
7. No fuel tanks, fuel lines, pressure gauges, pumps, batteries, cooling system
components or coolant lines allowed in the cab. All hydraulic lines in the cab must
be shielded top & sides with a minimum of .060” aluminum.
8. Engine must have been available as a factory option in a one-ton or smaller pickup
truck.
9. Maximum of 2 valves per cylinder.
10. Aluminum blocks are allowed, factory bore spacing must be retained.
11. No form of forced induction, no fuel injection systems allowed.
12. Unlimited single carburetor, maximum 4500 flange.
13. No sheet metal, or tunnel ram intake manifolds.
14. Exhaust must discharge vertically, or underneath & straight back.
15. No computer or programmable ignition controls allowed. Read-only data acquisition
systems will be permitted.
16. Rear of engine block must be at least 12” behind centerline of the front axle.
17. Driveline is open to any front axle, any rear axle, any transmission, & any transfer
case. No planetaries allowed.
18. All air or hydraulic suspension systems must have all lines & control switches
disconnected during competition.
19. Hitch must be stationary in all directions. Maximum hitch height of 26”. Minimum of
27% of the wheelbase from centerline of rear axle to hook point. No “trick hitches”
allowed. Maximum drawbar angle of 33 degrees parallel to the ground.
20. DOT approved tires only, no bar or terra tires. No alterations to tires permitted. No
duals allowed. Maximum tire size of 36”x14.50”.
21. All trucks must retain OEM wheelbase, maximum of 135”. Maximum track width of
96”. Wheels must be centered in wheel wells. Rear tires must overlap track of the
front tires a minimum of 2”.
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(REPLACES SMALL BLOCK GAS AND CAROLINA GRUDGE CLASS)
HELMET, FIRE SUIT, DRIVESHAFT LOOPS, TRANSMISSION/CLUTCH BLANKET, AND KILL SWITCH REQUIRED.
6200lb MAXIMUM WEIGHT. 24" HITCH HEIGHT
BALLAST: BALLAST IS PERMITTED, NOT TO EXCEED 60 INCHES FORWARD OF THE CENTER OF
THE FRONT AXLE. THIS WILL BE MEASURED FROM CENTER OF FRONT WHEELS TO
FURTHERMOST MOST POINT OF THE WEIGHTS OR WEIGHT RACK/BOX. ALL TRUCKS WITH A
WHEELBASE LONGER THAN 135” WILL BE LIMITED TO ALL FRONT WEIGHTS TO BE A MAXIMUM
OF 195” FROM THE CENTER OF THE REAR AXLE. THIS WILL BE MEASEURED FROM THE CENTER
OF THE REAR WHEELS TO THE FURTHESTMOST POINT OF THE WEIGHTS OR WEIGHT RACK/BOX.
WEIGHTS NOT TO EXCEED 80” WIDE (40” FROM CENTER OF TRUCK). TOW RING, MINIMUM OF
2 INCH I.D. RECOMMENDED ON FRONT OF WEIGHT BOX OR RACK. NO WEIGHTS ALLOWED IN
CAB OF TRUCK.
BODY: MUST BE AN OEM TRUCK BODY. NO FIBERGLASS BODY PARTS ALLOWED EXCEPT HOODS
& TAILGATES. THE HOOD MUST BE CLOSED AND SECURELY LATCHED WHILE THE VEHICLE IS
HOOKED TO THE SLED.
CHASSIS: AN OEM CHASSIS IS MANDATORY, NO TUBE OR HOMEMADE CHANNEL FRAMES.
BODY & FRAME RAILS MAY NOT BE MADE SHORTER
OR LONGER TO ALTER WHEELBASE.
COOLING SYSTEM: RADIATORS MUST BE LOCATED IN FRONT OF THE ENGINE IN THE STOCK
LOCATION. ELECTRIC FANS ARE ALLOWED.
DRIVELINE: TRANSMISSION, TRANSFER CASE, & AXLES MUST HAVE BEEN AN OPTION ON A
ONE-TON OR SMALLER PICKUP. DUAL DISK, SFI APPROVED CLUTCHES ARE ALLOWED, NO
CENTRIFICAL, MULTI-DISK TYPE CLUTCHES PERMITTED!!!
DRIVER SAFETY: MINIMUM OF LAP BELT REQUIRED WHILE HOOKED TO THE SLED. ALL DRIVERS
MUST WEAR A HELMET (APPROVED BY SNELL, DOT, SFI, ETC.), A SINGLE LAYER OR BETTER FIRE
JACKET (APPROVED BY SFI, SEMA, ETC.), LONG PANTS, & CLOSED TOE SHOES. NO OPEN TOE
SHOES ALLOWED WHILE ON THE TRACK!
DRIVESHAFT LOOPS: ALL TRUCKS MUST HAVE AT LEAST SIX INCH WIDE 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
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 (SMALL BLOCKS): THE ENGINE MUST BE CLASSIFIED AS A SMALL BLOCK FROM THE
FACTORY. NO FORD MODULAR STYLE ENGINES, AND NO CHRYSLER HEMI STYLE ENGINES
ALLOWED. (5.7 OEM HEMI ENGINES WILL BE ALLOWED IN STREET LEGAL TRUCKS)
A. ENGINES LIMITED TO 440 CI. WITH NO ALLOWANCE.
B. AFTERMARKET BLOCKS WILL BE ALLOWED, WITH THE EXCEPTION OF THE FORD
CLEVELAND SYLE ENGINE (CLEVELAND STYLE ENGINE MUST RUN A FACTORY
PRODUCTION STYLE BLOCK THAT WAS AVAILABLE IN A PRODUCTION CAR OR TRUCK &
HAVE ORIGINAL CASTING NUMBERS IN PLACE).
C. CYLINDER HEADS MUST BE FACTORY VALVE ANGLE & MAY BE ALUMINUM OR CAST
IRON. NO RAISED RUNNER HEADS, NO CANTED VALVE HEADS.
D. CHEVROLET- 18°, 15°, 12°, 9°, & SB2 HEADS WILL NOT BE ALLOWED. CHEVROLET LS-
ALL (LS STYLE) CHEVY CYLINDER HEADS MUST BE CATHEDRAL PORT STYLE. NO
SQUARE/RECTANGULAR PORT LS CYLINDER HEADS PERMITTED.
E. FORD- NO YATES, OR KAASE HEADS ALLOWED. HEADS MUST BE EITHER FACTORY
VALVE ANGLE WINDSOR, OR FACTORY VALVE ANGLE CLEVELAND BASED HEADS.
F. CHRYSLER- NO INDY HEADS, OR ANY HEMI STYLE CONFIGURATION. MUST BE
FACTORY VALVE ANGLE & WEDGE STYLE HEADS.
G. SINGLE CARBURATORS ONLY, MAY BE 4500 OR 4150 FLANGE. OEM FACTORY STYLE FUEL
INJECTION IS ALLOWED. NO LAPTOPS ALLOWED IN THE TRUCK ON THE TRACK.
H. INTAKE MANIFOLD MUST BE SINGLE PLANE, CAST, PUBLICLY AVAILIBLE MANIFOLD, NO
SHEET METAL INTAKE MANIFOLDS, AND NO TUNNEL RAM INTAKE MANIFOLDS.
I. NO FORM OF AFTERMARKET FORCED INDUCTION. (IE. FORD ECOBOOST IS ALLOWED)
J. NO DRY SUMP OIL SYSTEMS.
ENGINE (BIG BLOCKS):
A. ENGINE MUST BE IN FACTORY LOCATION, NOT TO BE MOVED FORWARD AT ALL!!!
B. ENGINES LIMITED TO 510 CI. WITH NO ALLOWANCE.
C. HEADS AND BLOCKS MUST BE OEM CAST IRON. ANY AFTERMARKET STEEL HEAD MUST
BE FACTORY VALVE ANGLE. NO RAISED RUNNER HEADS, NO CANTED VALVE HEADS.
D. SINGLE CARBURATORS ONLY, MAY BE 4150 FLANGE ONLY, NO DOMINATOR OR
PREDATORS ALLOWED. OEM FACTORY STYLE FUEL INJECTION IS ALLOWED. NO STAND-
ALONE FUEL SYSTEMS OR PROGRAMABLE IGNITION SYSTEMS ALLOWED. NO LAPTOPS
ALLOWED IN THE TRUCK ON THE TRACK.
E. INTAKE MANIFOLD MUST BE SINGLE PLANE, CAST, PUBLICLY AVAILIBLE MANIFOLD, NO
SHEET METAL INTAKE MANIFOLDS, AND NO TUNNEL RAM INTAKE MANIFOLDS.
F. NO FORM OF FORCED INDUCTION.
G. NO DRY SUMP OIL SYSTEMS.
FIRE EXTINGUISHER SYSTEM: A FIRE EXTINGUISHER SYSTEM IS REQUIRED, MINIMUM 2 ½ LB. IT
MUST BE SECURELY MOUNTED.
FIREWALL: THE COMPLETE OEM FIREWALL IS MANDATORY.
FLOOR: THE COMPLETE OEM FLOOR PAN IS MANDATORY.
FUEL: MUST BE PUMP GAS OR RACE GAS. NO ALCOHOL, NITROUS OXIDE, OR NITROUS
ACCESSORIES ALLOWED ON ENGINE, (PLATE, ETC.) NO “HOMEBREW” MIXTURES.
FUEL SYSTEM: THE OEM FUEL TANK OR RACING FUEL CELL ARE REQUIRED, NO HOMEMADE
TANKS, NO TANKS ALLOWED INSIDE THE CAB. NITROUS & PROPANE IN ANY FORM IS
PROHIBITED, ALL SYSTEM COMPONENTS MUST BE REMOVED FROM THE VEHICLE.
HARMONIC BALENCER: ALL ENGINES MUST BE EQUIPPED WITH A HARMONIC BALANCER OR
DAMPENER MEETING SFI SPEC 18.1. HARMONIC BALENCER SHEILDS MINIMUM OF 1/4”
ALUMINUM OR 1/8” STEEL MUST BE BOLTED BETWEEN THE FRAME RAILS, MINIMUM OF 3
INCHES WIDE, CENTERED UNDER THE BALENCER.
HITCH (SMALL BLOCKS): THE HITCH MUST BE STATIONARY IN ALL DIRECTIONS. THE HITCH'S
HEIGHT FROM THE GROUND MAY NOT EXCEED 24 INCHES. THE LENGTH OF THE HITCH
MEASURED FROM THE CENTER OF THE REAR AXLE TO THE HITCH POINT MAY BE NO SHORTER
THAN 36% OF WHEELBASE OF VEHICLE. THE AREA WHERE THE HOOK POINT IS AT MUST BE
FREE AND CLEAR OF ANY OBSTRUCTIONS. TRUCKS MAY COMPETE WITH A REESE STYLE HITCH
AS LONG AS IT MEETS THE 36% RULE. THE HOOKING POINT MUST HAVE A MINIMUM 3.75 INCH
INSIDE DIAMETER OPENING. NO LEVER, PIVOT, AXIS OR OTHER TYPES OF ‘TRICK’ HITCHES ARE
PROHIBITED. NO VERTICAL HITCHES, ALL HITCHES MUST BE 33 DEGREES OR LESS PARALLEL TO
THE GROUND.
HITCH (BIG BLOCKS): MUST PULL OFF A REESE STYLE HITCH, MOUNTED SOLID TO THE FRAME
WITH NO MOVEMENT. MUST HAVE A 5/8” GRADE 8 BOLT W/NUT TO REPLACE HITCH PIN.
REINFORCEMENTS MUST NOT EXTEND FORWARD OF THE CENTERLINE OF THE REAR AXLE, OR
ABOVE THE TOP OF THE OEM FRAMERAIL. 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, UNDER NO CIRCUMSTANCE MAY THE HOOK POINT BE
CLOSER THAN 44” OF CENTERLINE OF REAR AXLE. THE HITCH MUST BE HORIZONTAL TO THE
GROUND AND STATIONARY IN ALL DIRECTIONS. BUMPERS MAY BE NOTCHED OR ROLL PANS
MAY BE USED IN PLACE OF A BUMPER. THE HITCH HEIGHT FROM THE GROUND MAY NOT
EXCEED 24 INCHES ON FOUR WHEEL DRIVE VEHICLES, 30 INCHES ON TWO WHEEL DRIVE
VEHICLES. THE HOOKING POINT MUST HAVE A MINIMUM 3.75-INCH INSIDE DIAMETER
OPENING FOR THE SLED HOOK.
INTERIOR: DRIVERS SEAT MUST BE MOUNTED SOLID AND SAFELY. NO EXCESSIVE HOLES IN
FIREWALL, EXCESSIVE DEFINED AS 1/2” LARGER THAN NEEDED TO RUN EQUIPMENT THROUGH.
NO UNSAFE EXPOSED ELECTRICAL WIRING.
KILL SWITCH: IGNITION KILL SWITCH (MUST ALSO KILL ELECTRIC FUEL PUMP) MUST BE
MOUNTED IN CENTER OF TRUCK/TAILGATE, AND AT LEAST 30" OFF THE GROUND. THE USE OF
AN ELECTRICAL PLUG IN THE CIRCUIT THAT COMES APART WHEN VEHICLE BREAKS AWAY FROM
THE SLED OR IS PULLED BY SLED OPERATOR IS ACCEPTABLE. MUST HAVE A MINIMUM 2” I.D.
STEEL RING ON THE REAR HOOK POINT OF THE KILL SWITCH TO HOOK TO KILL CABLE ON SLEDS.
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. TAB TO BE WELDED ON TOP, CENTER OF REAR DIFFERENTIAL FOR MEASURING OF
HITCH.
REAR BUMPERS: ALL TRUCKS SHOULD HAVE A REAR BUMPER OR VERTICAL BUMPER BARS
STRONG ENOUGH TO STAND A REAR IMPACT OF THE SLED.
SUSPENSION, FRONT: TWIN SHOCKS ARE ALLOWED. 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.
SUSPENSION, REAR (SMALL BLOCKS): SOLID REAR SUSPENSIONS ARE ALLOWED, ALL WELDS
MUST BE SOLID AND APPROVED SAFE BY OFFICAL.
SUSPENSION, REAR (BIG BLOCKS): 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 MAY BE BLOCKED SOLID, COMPRESSION STOPS MUST BE EASILY
REMOVED OR ADJUSTABLE. ALL REAR SHOCK ABSORBER MOUNTS MUST BE PRESENT AND
UNALTERED, SHOCKS MAY BE REMOVED AND REPLACED WITH TRACTOR LINKS OR SOLD BARS.
AIRBAG SPRING ASSISTANCE IS PERMITTED; AIRBAG COMPRESSORS MUST BE DISCONNECTED.
TIRES: NO STUDDED TIRES, TIRE CHAINS, OR ANY TIRES NOT SPECIFICALLY INTENDED FOR
STREET USE ARE PERMITTED. TIRES MUST CARRY A D.O.T. NUMBER ON THE SIDEWALL. NO
CUTTING OR GROOVING ALLOWED. MAXIMUM TIRE SIZE IS 35X12.50 OR 315/75. TIRE SIZE
MUST BE MOLDED ON THE TIRE.
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.
WEIGHT: MAXIMUM WEIGHT 6,200 LBS INCLUDING FUEL, OIL, WATER, COOLANT, DRIVER,
READY TO COMPETE.
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The WORK STOCK (WS) class is designed for street legal, on the road pickup trucks
(Full bodied diesel pickup trucks).
Valid registration and license is mandatory.
WEIGHT: Max weight 8500LBS with driver included.
Hanging Front weights are allowed. They may not
exceed 60” from the center of the front axle.
BODY: The body must be an OEM truck body, including the full bed floor. The body must
retain full sheet metal. Metal aftermarket 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 are mandatory.
BODY: The body must be an OEM truck body, including the full bed floor. The body must
retain full sheet metal. Metal aftermarket 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 are mandatory.
CREDENTIALS: All drivers must have a valid states driver’s license.
DRIVELINE: An OEM transmission and transfer case are mandatory. They must have
been an option on a one-ton or smaller pick-up.
ENGINE: The engine is limited to a stock- appearing, OEM make-specific compression
ignition engine. The engine is limited to any diesel engine available in a one-ton or
smaller pick-ups; I.E. transplanting a Cummins engine into a ford is allowed.
TURBOCHARGER: Open S300 Borg Warner-T4 foot max with T4 bolt pattern. Must be
Borg Warner front to back. No billet center sections. No cut/welded exhaust housing or
compressor housings. 4 inch compressor inlet. Exhaust must be visible for inspection.
Stock appearing.single stock appearing. May run borg Warner S300 center section. No
billet centers. Recast covers allowed must be OEM dimensions. No S400 parts allowed.
6.4 power stroke turbos must be stock appearing.
EXHAUST: The exhaust
must exit rearward of the driver compartment. Stacks exiting through the hood or fender
well are prohibited.
HITCH: The hitch must be a receiver-style hitch; reinforcements are permitted.
Reinforcements must not extend forward of the center line of the rear axle. Trick hitches
are prohibited. Trick hitches will be determined by the tech officials. The hooking point
must be the rear-most point of the vehicle and must be rearward of the stock location of
the tailgate. The hitch must be horizontal to the ground and minimum 3.750-Inches
inside diameter opening for the sled hook. The hooking point will be measured from the
center of the clevis loop. Reese receiver with solid square shaft, clevis’ are allowed if
using DMI or solid shaft. Breakage of the hitch is a disqualification with no measurement
recorded.
INTERIOR: A complete interior, including dashboard, door panels, headliner, etc. is
mandatory. All factory controls (lights, signals, horn, windows, wiper, etc.) must be
retained and operative. The use of hand throttled controls is prohibited.
TIRES: The tires must be DOT street tires. Cuts are prohibited. The maximum size for
tires is 35”. If running duals, the maximum size is 33”. If running duals, a dually bed is
required.
NITROUS OXIDE: Nitrous Oxide is prohibited along with other oxygen extenders and
use of propane is prohibited, along with all injectables. All system components must be
unplugged or removed from the truck.
If you do not fit within these rules, you may still pull exhibition in this class.
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(All drivers must have valid driver license and full SFI fire suit including helmet.)
1.Maximum weight 8000LBS.
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 body being used.
3. The body must be OEM truck body including the full bed floor. No flatbeds permitted. The body must retain the full sheet metal. After market 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 at splice with 4-6 inches of slack.
5. Cylinder head must be OEM or OEM replica for brand of engine. Outside of 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 centerline of 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 centerline of the rear axle. The adjusters must go down from 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 center point of rear axle. Pivot pin of drawbar can be no further forward than the centerline of 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 inducer bore and contact wheel.
8. All vehicles must be equipped with upward pointing exhaust located either directly behind cab or out of 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 front axle. Ballast may be added in the bed of truck but must be securely fastened.
10. All trucks must have at least 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 vehicle. Any front shaft u-joints that can be visibly seen from side of truck must be shielded to contain the u-joint and the end of the driveshaft.
11. A fire extinguisher system is permitted. 2.5# fire extinguisher must be securely mounted within reach of driver. A complete OEM firewall is required.
12. All drivers must have valid driver license and full SFI fire suit including helmet. Seatbelt/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 (See fuels page for specs) 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 switch (rain cap or guillotine) must shut off air to diesel engines. Switch will be securely mounted to back of vehicle. A 2 inch or bigger solid ring must be attached to end of switch. Ring must be zip tied to switch bracket. Switch must also be able to be activated in cab while driver is secured in vehicle.
19. Hydraulic steering permitted
20. Suspension - The upper mounting point for strut 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 air bags. Rear suspension may be made solid.
21. Tires must be DOT approved with maximum size of 35x12.50. No studded tires or tire chains. No alterations to tires permitted. No bar or terra tires.
22. OEM transmission and transfer case must be used. Must have come factory in a one ton or smaller vehicle.
23. Non-OEM transmissions prohibited. Aftermarket torque converters, valve bodies, and internal components are permitted.
24. SFI bell housing and/or SFI blow proof bell housing or SFI blanket type shield must be used.
25. Water injection is prohibited. 2. Air to air intercooler only. No ice or water permitted truck during competition.
(The Work Stock class is designed for stock, street legal, on the road pickup trucks)
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Valid registration and license is mandatory.
WEIGHT: Max weight 8500LBS with driver included.
Hanging Front weights are allowed. They may not
exceed 60” from the center of the front axle.
BODY: The body must be an OEM truck body, including the full bed floor. The body must
retain full sheet metal. Metal aftermarket 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 are mandatory.
BODY: The body must be an OEM truck body, including the full bed floor. The body must
retain full sheet metal. Metal aftermarket 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 are mandatory.
CREDENTIALS: All drivers must have a valid states driver’s license.
DRIVELINE: An OEM transmission and transfer case are mandatory. They must have
been an option on a one-ton or smaller pick-up.
ENGINE: The engine is limited to a stock- appearing, OEM make-specific compression
ignition engine. The engine is limited to any diesel engine available in a one-ton or
smaller pick-ups; I.E. transplanting a Cummins engine into a ford is allowed.
TURBOCHARGER: Stock Appearing
EXHAUST: The exhaust
must exit rearward of the driver compartment. Stacks exiting through the hood or fender
well are prohibited.
HITCH: The hitch must be a receiver-style hitch; reinforcements are permitted.
Reinforcements must not extend forward of the center line of the rear axle. Trick hitches
are prohibited. Trick hitches will be determined by the tech officials. The hooking point
must be the rear-most point of the vehicle and must be rearward of the stock location of
the tailgate. The hitch must be horizontal to the ground and minimum 3.750-Inches
inside diameter opening for the sled hook. The hooking point will be measured from the
center of the clevis loop. Reese receiver with solid square shaft, clevis’ are allowed if
using DMI or solid shaft. Breakage of the hitch is a disqualification with no measurement
recorded.
INTERIOR: A complete interior, including dashboard, door panels, headliner, etc. is
mandatory. All factory controls (lights, signals, horn, windows, wiper, etc.) must be
retained and operative. The use of hand throttled controls is prohibited.
TIRES: The tires must be DOT street tires. Cuts are prohibited. The maximum size for
tires is 35”. If running duals, the maximum size is 33”. If running duals, a dually bed is
required.
NITROUS OXIDE: Nitrous Oxide is prohibited along with other oxygen extenders and
use of propane is prohibited, along with all injectables. All system components must be
unplugged or removed from the truck.
If you do not fit within these rules, you may still pull exhibition in this class.
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THE HOT STREET CLASS IS DESIGNED FOR DAILY-DRIVEN, ON-THE-ROAD PICKUP TRUCKS
(FULL-BODIED DIESEL PICKUP TRUCKS). VALID D.O.T. REGISTRATION AND LICENSE PLATES ARE
MANDATORY.
BALLAST: BALLAST IS PERMITTED. FRONT HANGING WEIGHTS ARE ALLOWED, NOT TO EXCEED
60 INCHES FORWARD OF THE CENTER OF THE FRONT AXLE. THIS WILL BE MEASURED FROM
CENTER OF FRONT WHEELS TO FURTHEST MOST POINT OF THE WEIGHTS OR WEIGHT RACK.
WEIGHTS AND ALL RACKS MUST BE EASILY REMOVED. FRONT WEIGHT BALLAST MUST BE
SECURELY FASTENED TO THE FRAME RAILS, AND ONLY HAVE MOVABLE WEIGHT ON IT. NO
BATTERIES, TANKS, CELLS, OR ANY OTHER EQUIPMENT ALLOWED IN FRONT OF THE FRONT
BUMPER. BALLAST IS ALSO PERMITTED BEHIND THE CAB OF VEHICLE. ABSOLUTELY NO
WEIGHTS INSIDE THE CAB.
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.
AFTERMARKET BEDS SUCH AS SERVICE BODIES, FLAT BEDS, ETC. ARE ALLOWED. THE BODY
MUST RETAIN FULL SHEET METAL. METAL OR FIBERGLASS AFTER-MARKET HOODS ARE
PERMITTED. THE HOOD MUST BE CLOSED AND SECURELY LATCHED WHILE THE VEHICLE IS
HOOKED TO THE SLED.
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.
COMPRESSED GASES: USE OF ANY COMPRESSED GASES IS PROHIBITED. (NITROUS OR PROPANE
OR ANY OTHER). AIR/CO 2 TANKS FOR FRONT LOCKERS ARE ALLOWED, LINES MUST BE VISIBLE
ALL THE WAY FROM THE TANK TO THE DIFFERENTIAL HOUSING.
DRIVELINE: THE TRANSMISSION, TRANSFER CASE, AND AXLES MUST HAVE BEEN AN OPTION ON
A ONE-TON OR SMALLER PICKUP.
DRIVESHAFT LOOPS: ARE STRONGLY RECOMMENDED. ANY U JOINT THAT IS VISIBLE FROM THE
SIDE OF THE TRUCK MUST BE SHIELDED TO CONTAIN THE UJOINT AND END OF THE SHAFT.
RECOMMENDED TO BE AT LEAST SIX INCH WIDE U-JOINT SHIELDS AROUND THE REAR U-JOINT
CONSTRUCTED OF AT LEAST ¼ INCH STEEL OR 3/8 INCH ALUMINUM THAT WILL SAFELY
CONTAIN THE U-JOINT AND THE END OF THE REAR SHAFT. ALL SHIELDS MUST BE SECURELY
MOUNTED TO THE VEHICLE. (NOTE; IF THE TRUCK HAS FRONT HANGING WEIGHTS, THE TRUCK
MUST HAVE DRIVESHAFT LOOPS!!!)
DRIVER RESTRAINT SYSTEM: THE OEM RESTRAINT SYSTEM IS MANDATORY AND MUST BE
WORN.
ENGINE: ENGINE MUST HAVE BEEN AN OPTION IN A 1 TON OR LESS TRUCK. MAXIMUM 460
CUBIC INCHES. NO FILLED BLOCKS, COOLANT MUST FLOW THROUGH THE BLOCK AND HEAD(S).
NO DECK PLATES. ALL OTHER INTERNAL MODIFICATIONS ARE PERMITTED.
EXHAUST: ALL VEHICLES SHOULD BE EQUIPPED TO DIRECT EXHAUST UPWARD. IT IS
RECOMMENDED TO HAVE TWO 3/8 INCH DIAMETER PLACED THROUGH THE EXHAUST PIPE IN A
CROSS PATTERN WITHIN ONE INCH OF EACH OTHER, WITHIN 12” OF THE TURBO. IF THE
EXHAUST EXITS THROUGH THE HOOD, CROSS BOLTS ARE REQUIRED!!! NO EXHAUST WILL BE
ALLOWED THAT EXITS TO THE SIDE THROUGH THE FENDER, MUST TURN UPWARDS!!!
FIREWALL: THE COMPLETE OEM FIREWALL IS MANDATORY.
FLOOR: THE COMPLETE OEM FLOOR PAN IS MANDATORY.
FUEL: THE FUEL MUST BE PUMP #1/#2 DIESEL, SOY/BIODIESEL FUEL. NO PROPANE OR NO2
PERMITTED OR ANY OTHER OXYGEN ENHANCERS.
FUEL INJECTION PUMP: THE FUEL INJECTION PUMP IS LIMITED TO STOCK APPEARING
INJECTION PUMPS. INJECTION PUMPS MAY BE INTERCHANGED BETWEEN DIFFERENT YEARS AND
MODELS OF ENGINES (P-PUMP 24 VALVE CUMMINS IS PERMITTED) THE USE OF MULTIPLE HIGH
PRESSURE COMMON RAIL FUEL PUMPS OR HPOPS ARE PERMITTED. THE P PUMPS THAT ARE
ALLOWED ARE THE P3000 AND THE P7100, AG GOVERNORS ARE NOT ALLOWED. NO SIGMA OR
12 CYLINDER PUMPS ALLOWED. ALL THROTTLES MUST BE SPRING LOADED TO RETURN TO IDLE
“DEAD MAN THROTTLE SYSTEM.
FUEL SYSTEM: THE OEM FUEL TANK OR RACING FUEL CELL ARE REQUIRED, NO HOMEMADE
TANKS, NO TANKS ALLOWED INSIDE THE CAB. NITROUS AND PROPANE IN ANY FORM IS
PROHIBITED, ALL SYSTEM COMPONENTS MUST BE REMOVED FROM THE VEHICLE.
HITCH: MUST PULL OFF A REESE STYLE HITCH, MOUNTED SOLID TO THE FRAME WITH NO
MOVEMENT. MUST HAVE A 5/8” GRADE 8 BOLT W/NUT TO REPLACE HITCH PIN.
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, UNDER NO
CIRCUMSTANCE MAY THE HOOK POINT BE CLOSER THAN 44” OF CENTERLINE OF REAR AXLE.
THE HITCH MUST BE HORIZONTAL TO THE GROUND AND STATIONARY IN ALL DIRECTIONS.
BUMPERS MAY BE NOTCHED OR ROLL PANS MAY BE USED IN PLACE OF A BUMPER. THE HITCH
HEIGHT FROM THE GROUND MAY NOT EXCEED 24 INCHES ON FOUR WHEEL DRIVE VEHICLES,
30 INCHES ON TWO WHEEL DRIVE VEHICLES. THE HOOKING POINT MUST HAVE A MINIMUM
3.75-INCH INSIDE DIAMETER OPENING FOR THE SLED HOOK.
INTERCOOLER: NO AIR TO WATER INTERCOOERS ALLOWED, NO ICEBOXES ALLOWED ON THE
VEHICLE.
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. HEADLIGHTS AND
FOG LIGHTS WILL NOT BE ON WHILE VEHICLE IS ON THE TRACK!!! ANY PULLER THAT TURNS
THEIR HEADLIGHTS OR FOG LIGHTS ON BEFORE THE RED FLAG IS SHOWN WILL BE
AUTOMATICALLY DISQUALIFIED!
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 SHOULD 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 ASSISTANCE, IF IT WAS SO EQUIPPED. ADDITIONAL
STABILIZERS ARE PERMITTED. NON-OEM POWER ASSIST METHODS ARE PROHIBITED.
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.
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 MAY BE SOLID, COMPRESSION STOPS MUST BE EASILY REMOVED OR
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: NO STUDDED TIRES, TIRE CHAINS, OR ANY TIRES NOT SPECIFICALLY INTENDED FOR
STREET USE ARE PERMITTED. TIRES MUST CARRY A D.O.T. NUMBER ON THE SIDEWALL. NO
CUTTING, GROOVING, OR SIPING ALLOWED. MAXIMUM TIRE HEIGHT IS 35”. TIRE SIZE MUST BE
MOLDED ON THE TIRE. DUAL REAR WHEELS ARE ALLOWED FOR FACTORY EQUIPPED, ONE TON
DUALLY, NO DUALS ON A 3/4 TON TRUCK! OUTSIDE DUALS MUST BE COVERED BY THE BED, OR
A DUALLY FENDER WITH CLEARANCE LIGHTS. IF YOU CAN’T LEGALLY DRIVE IT ON THE STREET
WITH THE DUALS ON, IT IS NOT LEGAL!!! ALL DUALLY WHEELS MUST BE FACTORY OR
AFTERMARKET POSITIVE OFFSET DUALLY STYLE WHEELS. NO CUSTOM REAR DUALLY HUBS OR
WHEELS ALLOWED. FACTORY FRONT DUAL WHEEL ADAPTERS ARE PERMITTED, BUT MUST ALSO
BE USED WITH A SINGE FACTORY OR AFTERMARKET POSITIVE OFFSET DUALLY STYLE WHEEL.
NO “REAL WHEELS” OR OTHER SIMILAR BRANDS ALLOWED.
TRANSMISSION, AUTOMATIC: NON-OEM TRANSMISSIONS 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. IT
IS RECOMMENDED ALL VEHICLES FOLLOW THE FOLLOWING SAFETY GUIDELINES;
ALL TRANSMISSION LINES SHOULD BE METALLIC OR HIGH-PRESSURE-TYPE HOSE.
ALL VEHICLES USING AN AUTOMATIC TRANSMISSION SHOULD BE EQUIPPED WITH AN
APPROVED TRANSMISSION SHIELD (SEMA, SFI, ETC.). A BLANKET-TYPE SHIELD IS PERMITTED,
IT SHOULD EXTEND FROM THE REAR OF THE BLOCK TO THE REAR OF THE CLUTCH AREA OF
THE TRANSMISSION. THE BELL HOUSING AREA IS TO BE COMPLETELY COVERED SIX INCH
OVERLAP WHERE IT IS FASTENED.
ALL VEHICLES USING AN AUTOMATIC TRANSMISSION SHOULD BE EQUIPPED WITH A FLEX
PLATE MEETING SEMA OR SFI SPECIFICATIONS.
TRANSMISSION, MANUAL: NON-OEM TRANSMISSIONS ARE PROHIBITED. AFTERMARKET
INTERNAL COMPONENTS ARE PERMITTED. A CLUTCH MEETING SFI OR SEMA SPECIFICATIONS IS
RECOMMENDED ON ALL VEHICLES. ALL MANUAL TRANSMISSIONS MUST BE CLUTCH ASSISTED.
SEQUENTIAL SHIFTERS ARE PROHIBITED. IT IS RECOMMENDED ALL VEHICLES FOLLOW THE
FOLLOWING SAFETY GUIDELINES;
ALL VEHICLES EQUIPPED WITH A MANUAL TRANSMISSION SHOULD HAVE A FLYWHEEL SHIELD
MEETING SFI OR SEMA SPECIFICATIONS. APPLICATIONS FOR WHICH AN SFI SPEC FLYWHEEL
SHIELD IS NOT AVAILABLE MAY USE A PROPERLY ATTACHED SFI OR SEMA BLANKET THAT
COMPLETELY COVERS THE BELLHOUSING; IT MUST BE ATTACHED TO THE BLOCK AND EXTEND
REARWARD TO THE TRANSMISSION WITH A MINIMUM SIX INCH OVERLAP WHERE IT IS
FASTENED.
TURBOCHARGER: OPEN
WATER INJECTION: WATER METHANOL INJECTION IS PERMITTED. NO NITROUS OR PROPANE
MAXIMUM WEIGHT 8,500 LBS INCLUDING FUEL, OIL, WATER, COOLANT, DRIVER, READY TO
COMPETE.
WEIGHT: MAXIMUM WEIGHT 8,500 LBS INCLUDING FUEL, OIL, WATER, COOLANT, DRIVER,
READY TO COMPETE.
WHEELBASE: THE VEHICLE MUST RETAIN THE ORIGINAL FACTORY WHEELBASE AND A
MAXIMUM OF 102 INCH TRACK WIDTH.
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1. All OEM chassis rules (No component chassis allowed), including shielding, safety,
and SFI requirements, apply to this class plus the following rules.
2. All tractors will require a SFI Spec. 47.1 roll cage, ROPS will not be allowed.
3. Engine, sheet metal, transmission, & rear-end must be of the same manufacturer.
4. Maximum weight 9500 lbs.
5. Maximum tire size not to exceed;
a. 24.5x32 with a maximum of 48 lugs.
b. Or 20.8x38 with a maximum of 56 lugs.
c. No Puller 2000, HP, Parkes, Pro Puller, or Mitas tires allowed.
6. No engine larger than 470 cid. De-cubing of larger engines is allowed.
7. OEM Cylinder Head. No recast, no aluminum. No overhead cams allowed.
Maximum 2 valves per cylinder.
8. Single feed intake & exhaust manifolds must be OEM.
9. Diesel fuel only.
10. A P-7100 injection pump is the largest allowed. (2-5/8”W X 9-9/16”L X 8-3/16” H
main pump body) Only one plunger per cylinder allowed.
11. Injection pump must be mounted in the stock location, minimum injection line length
is 24”. Moving the injection pump back to a mid-mount is not allowed.
12. A single S400 based turbocharger is permitted with a maximum intake wheel
inducer size of 3.0” intake wheel x 3.0” exhaust. Compressor wheel must extend
into the inducer bore and cover the map groove. Factory style map width
enhancement groove is permitted; no other means for air to get to the compressor
wheel are permitted. No billet intake wheels. No ball bearing turbo’s – T-4 flange
only (2.75” X 3.50” bolt pattern). No modifications to compressor wheel or housing
(only to plumb air pipe to intake). Turbo size will be checked using a 3.005” plug.
14. Water injection is allowed.
15. No inner/after coolers allowed. No CO2 or any other means of cooling the air in the
piping or manifold. No ice filled or ice cooled devices onboard tractor of any kind. All
engine air must enter the inlet of the turbo at ambient air temp and humidity. Inlet air
may not be drawn through or across any type of cooling device.
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MAXIMUM WEIGHT 5,500 LBS INCLUDING FUEL, OIL, WATER, COOLANT, DRIVER, READY TO
COMPETE. (OFFICIALS RESERVE THE RIGHT TO ALTER WEIGHTS BETWEEN SMALL AND BIG BLOCK
TRACTORS TO EQUALIZE COMPETITION WITHIN THE CLASS)
CHASSIS
1. THE WHEELBASE OF THE TRACTOR (CENTER OF FRONT WHEEL TO CENTER OF REAR WHEEL)
SHALL NOT EXCEED 10 ½ FEET (126 INCHES).
2. TRACTORS MUST HAVE WIDE FRONT ENDS THAT TRACK WITHIN THE REAR WHEEL TRACKS.
3. TRACTORS MUST HAVE FRAMES EXTENDED OR REPLACED. REAR AXLE HOUSING MUST
CONNECT TO FRAME USING SAME SIZE MATERIAL, BUT NO PART OF THE TRACTOR
(INCLUDING WEIGHT BRACKETS) SHALL EXTEND FURTHER THAN 13 FEET (156 INCHES)
FROM THE CENTER OF THE REAR WHEELS.
4. TRACTORS MUST USE THE REAR END, TRANSMISSION, AND SHEET METAL FROM A FARM
TRACTOR OF THE YEARS 1960 OR BEFORE. HOOD MAY BE MODIFIED AND/OR EXTENDED TO
ACCOMMODATE THE AUTOMOTIVE ENGINE AND TRANSMISSION.
5. TRACTORS MUST RUN ANY AUTOMOTIVE AUTOMATIC TRANSMISSION IN ADDITION TO THE
TRACTOR TRANSMISSION, NO CLUTCH, OR THE AUTOMATIC TRANSMISSION MAY BE
DIRECTLY CONNECTED TO THE TRACTOR REAR END.
6. ALL AUTOMOTIVE TRANSMISSIONS MUST BE COVERED WITH A CURRENT (NOT OVER 4
YEARS OLD) SEMA APPROVED SAFETY BLANKET OR SHIELD (SHIELD MUST BE AT LEAST 1/8”
STEEL) AND BE SECURED WITH 5/16” GRADE 8 BOLTS. THE BOLT SPACING SHOULD NOT BE
MORE THAN 8” ON CENTER. THE SHIELDING SHOULD BE 360 DEGREES AROUND THE
WIDTH AND LENGTH OF THE TRANSMISSION. ALL AUTOMATIC TRANSMISSIONS MUST BE
EQUIPPED WITH A SAFETY SWITCH TO PREVENT STARTING UNLESS IN PARK OR NEUTRAL.
7. THE DRIVE SHAFT TO THE ORIGINAL TRACTOR TRANSMISSION (OR DIFFERENTIAL IF NOT
USING THE TRACTOR TRANSMISSION) MUST BE SHIELDED 360 DEGREES WITH ¼” STEEL OR
3/8” ALUMINUM AND FASTENED EVERY 6 INCHES WITH 3/8” (GRADE 5 OR BETTER) BOLTS.
DRIVE SHAFTS WILL NOT EXCEED 48 INCHES AND NO INPUT OR OUTPUT SHAFT THAT
ATTACHES TO A DRIVE SHAFT WILL EXCEED 4 INCHES BEYOND A BEARING.
8. FRONT AXLE BRACE/SKIS WILL BE REQUIRED, FRONT AXLE SKIS TO BE MADE OF 2” X 0.95”
TUBING OR 2” X 0.120” MILD STEEL TUBING OR SAME MATERIAL AS TRACTOR FRAME RAILS.
FRONT AXLE SKIS SHOULD CONNECT TO EACH FRAME RAIL INLINE & EXTEND TOWARDS THE
FRONT OF THE TRACTOR. FRONT SKIS SHOULD HAVE A RADIUS TO PREVENT DIGGING INTO
THE TRACK. FRONT AXLE SKIS SHOULD BE STRONG ENOUGH TO SUPPORT THE FRONT END
WEIGHT OF THE TRACTOR. SKIS SHOULD HAVE A MAXIMUM OF 4” GROUND CLEARANCE.
9. ALL TRACTORS MUST BE EQUIPPED WITH ROLL CAGE PER SPECS. CAGE MUST HAVE A
MINIMUM OF TWO VERTICAL BARS OF 1-3/4” DIAMETER ROLL BAR TUBING FROM SIDE
VIEW, AT LEAST AS HIGH AS THE TOP OF THE DRIVERS HEAD/HELMET. A FORWARD BRACE
OF THE SAME MATERIAL MUST ANGLE TO THE FRAME. THE CAGE MUST HAVE TWO BARS
ACROSS THE BACK OF CAGE, ONE AT MIDDLE OF DRIVER’S BACK AND ONE AT DRIVER’S
HEAD. CAGE MUST BE FASTENED AT LEAST TWO POINTS TO THE REAR AXLE HOUSING.
CAGE MUST BE ABLE TO LIFT BOTH REAR WHEELS WHEN LIFTED VERTICALLY. MUST BE ABLE
TO LIFT ONE REAR WHEEL WHEN PULLED HORIZONTALLY FROM THE TOP OF THE CAGE
WITHOUT DAMAGE TO THE CAGE.
10. TRACTORS MUST HAVE FENDERS CONSISTING OF A SOLID BARRIER BETWEEN THE DRIVER
AND ANY PART OF THE REAR TIRES. MUST BE A MINIMUM OF 2” HIGHER THAN THE TIRES
AND WIDE ENOUGH TO COVER THE DRIVER'S BODY. FENDERS MUST BE ABLE TO
SUFFICIENTLY SUPPORT THE WIEGHT OF THE DRIVER
11. ALL WEIGHT FRAMES AND WEIGHTS MUST BE STATIONARY AND SAFELY SECURED TO THE
VEHICLE. FRAMES OR WEIGHTS MUST NOT EXTEND REARWARD BEYOND THE REAR TIRES
OR EXCEED THE WIDTH OF THE REAR TIRES. NO WEIGHTS OR OBSTRUCTIONS ABOVE THE
DRAWBAR.
12. HITCH HEIGHT IS 20" AND LENGTH IS MINIMUM OF 18" FROM CENTER OF REAR AXLE TO
HOOK POINT. NO CLEVIS ALLOWED ON DRAWBAR. HITCHES MUST BE RIGID, IN ALL
DIRECTIONS. NO MOVEMENT IS ALLOWED WHILE PULLING. DRAWBARS MUST BE PARALLEL
TO THE GROUND. HITCH MUST BE HORIZONTAL - NOT VERTICAL. DO NOT CONNECT
DRAWBARS AND STABILIZER BARS.
13. ALL TRACTORS MUST BE EQUIPPED WITH STABILIZER (WHEELIE) BARS. STABILIZER BARS TO
HAVE PADS, NOT WHEELS, ON BOTTOM OF BARS. PADS TO BE A MINIMUM OF 5 SQ. IN.
PADS TO BE A MINIMUM OF 32" REARWARD FROM THE CENTER OF THE REAREND
HOUSING. PADS MAXIMUM OF 10" OFF THE GROUND. OUTSIDE TO OUTSIDE LENGTH OF
PADS TO BE A MINIMUM OF 20". MINIMUM 12" HIGH BUMPER BARS - TOP TO BE
FASTENED TO STABILIZER BAR FRAMING. BARS MUST SUPPORT WEIGHT OF TRACTOR FOR
WEIGHT CLASS BEING PULLED.
14. TIRES MAY BE FULL CUT. WHEEL DIAMETER MUST NOT EXCEED 38 INCHES. NO PULLER
2000, HP, PARKES, PRO PULLER, OR MITAS TIRES ALLOWED. MAXIMUM TIRE SIZE;
A. SMALL BLOCK-18.4 X 38.
B. BIG BLOCK-30.5 X 32.
15. MAXIMUM WIDTH OF TRACTOR IS 96 INCHES.
16. TRACTORS SHOULD HAVE DESCRIPTION OF TRACTOR PRINTED OR WRITTEN ON TRACTOR IN
FULL VIEW OF SPECTATORS; I.E.: CHEVY POWERED WD ALLIS OR WD ALLIS CHALMERS
POWERED BY CHEVY MOTOR, ETC.
ENGINES
17. ALL TRACTORS LIMITED TO A SINGLE AUTOMOTIVE TYPE V-8, MAXIMUM OF EIGHT
CYLINDERS, TWO VALVES AND ONE SPARK PLUG PER CYLINDER.
18. ALL INTAKE MANIFOLDS MUST BE SINGLE PLANE, CAST, PUBLICLY AVAILIBLE MANIFOLDS,
NO SHEET METAL INTAKE MANIFOLDS, AND NO TUNNEL RAM INTAKE MANIFOLDS.
19. NO FORM OF FUEL INJECTION OF ANY KIND ALLOWED. NO FORM OF FORCED INDUCTION.
NO CRANK TRIGGER IGNITION SYSTEMS. NO DRY SUMP OIL SYSTEMS.
(SMALL BLOCKS)
20. THE ENGINE MUST BE CLASSIFIED AS A SMALL BLOCK FROM THE FACTORY. NO CHEVROLET
LS STYLE ENGINES, NO FORD MODULAR STYLE ENGINES, AND NO CHRYSLER HEMI STYLE
ENGINES ALLOWED.
A. ENGINES LIMITED TO 417 CI. WITH NO ALLOWANCE.
B. AFTERMARKET BLOCKS WILL BE ALLOWED, MUST RETAIN OEM BORE SPACING & DECK
HEIGHT. THE FORD CLEVELAND SYLE ENGINE (CLEVELAND STYLE ENGINE MUST RUN A
FACTORY PRODUCTION STYLE BLOCK THAT WAS AVAILABLE IN A PRODUCTION CAR OR
TRUCK & HAVE ORIGINAL CASTING NUMBERS IN PLACE).
C. CYLINDER HEADS MUST BE FACTORY VALVE ANGLE & MAY BE ALUMINUM OR CAST
IRON. NO RAISED RUNNER HEADS, NO CANTED VALVE HEADS.
D. CHEVROLET- 18°, 15°, 12°, 9°, & SB2 HEADS WILL NOT BE ALLOWED. EXCEPTION; 18°
CAST IRON VORTEC HEADS WILL BE ALLOWED.
E. FORD- NO YATES, OR KAASE HEADS ALLOWED. HEADS MUST BE EITHER FACTORY VALVE
ANGLE WINDSOR, OR FACTORY VALVE ANGLE CLEVELAND BASED HEADS.
F. CHRYSLER- NO INDY HEADS, OR ANY HEMI STYLE CONFIGURATION. MUST BE FACTORY
VALVE ANGLE & WEDGE STYLE HEADS.
G. SINGLE CARBURATORS ONLY, 4150 FLANGE ONLY.
(BIG BLOCKS)
A. ENGINES LIMITED TO 550 CI. WITH NO ALLOWANCE.
B. AFTERMARKET BLOCKS WILL BE ALLOWED, MUST RETAIN OEM BORE SPACING & DECK
HEIGHT.
C. CYLINDER HEADS MUST BE WEDGE STYLE, FACTORY VALVE ANGLE, & MUST BE CAST
IRON, NO ALUMINUM HEADS. NO RAISED RUNNER HEADS, NO CANTED VALVE HEADS.
D. HEMI STYLE CONFIGURATION. MUST BE FACTORY VALVE ANGLE & WEDGE STYLE
HEADS.
E. SINGLE CARBURATORS ONLY, 4150 FLANGE ONLY. NO FUEL INJECTION OF ANY KIND
ALLOWED.
SAFETY
21. ABC 2-1/2 POUND FIRE EXTINGUISHER MUST BE MOUNTED WITHIN EASY REACH OF THE
DRIVER.
22. HARMONIC BALANCERS MUST BE BOLTED TO CRANKSHAFT AND BE SF1-18-1 CERTIFIED OR
BE SHIELDED WITH 1/4” WALL STEEL. 360 DEG.
23. ALL TRACTORS MUST BE EQUIPPED WITH KILL SWITCHES AS SPECIFIED BY C.O.P.S. KILL
SWITCH MUST BE MOUNTED AT A 90 DEGREE ANGLE OR LESS, TO EASE THE FUNCION OF
SWITCH. ALL KILL SWITCHES MUST CUT OFF THE IGNITION AND STOP THE ELECTRIC FUEL
PUMP, IF SO EQUIPPED.
24. ALL TRACTORS MUST BE EQUIPPED WITH A “RETURN TO IDLE” DEAD MAN THROTTLE,
MUST HAVE TWO SPRINGS, AT LEAST ONE HOOKED DIRECTLY TO CARBURETOR THROTTLE
LINKAGE.
25. TRACTORS MUST BE EQUIPPED WITH ADEQUATE SEAT BELTS AND DRIVER MUST HAVE
THEM FASTENED WHILE PULLING.
26. ALL DRIVERS MUST WEAR D.O.T. APPROVED HELMET & SINGLE LAYER OR BETTER SFI
APPROVED FIRE JACKET, LONG PANTS, & CLOSED TOE SHOES. ALL REQUIRED WHILE
TRACTOR IS HOOKED TO THE SLED. UNDER GREEN FLAG.
27. ALL SAFETY REQUIREMENTS OF C.O.P.S. WILL APPLY TO THE CLASSIC MODIFIED CLASS.
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To be determined.
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Free for all kids 8 and under. Petal pull is in between dirt drags and sled pulling - 5pm
Contact
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