Class 8 800 - 849
Limited Full Size truck or SUV
Limited Full Size truck or SUV
Last Updated May 15, 2024
DEFINITION
Vehicles built from a full sized 2 or 4 Wheel drive utility or SUV vehicles. Vehicle must have been series produced in quantities of at least 5,000 units within a 12-month period and be readily available to the general public in the U.S.A. Vehicle must be marketed as a full-sized utility, or sports utility vehicle.
GENERAL REGULATIONS
Entrants in this class shall comply with all applicable general regulations.
TECHNICAL REGULATIONS
Manufacturer’s body, engine, and chassis combinations must be retained. This class is an open production class and all components will be considered open unless restricted herein.
NOTE: The TR abbreviations listed under this class (I.E. TR1 HELMETS) refer to TR cross reference listings in the front of this book. These TR cross-referenced listings are part of the class rules. Where a conflict occurs between the TR cross-referenced listing and a rule contained under this class, the rule contained under this class takes priority.
SAFETY EQUIPMENT
TR1 HELMETS
TR2 PROTECTIVE CLOTHING
TR3 EYE PROTECTION and DENTURES
TR4 HEAD AND NECK RESTRAINTS
TR5 FIRST AID KIT
TR6 EMERGENCY SIGNALING DEVICES
TR7 HORNS
TR8 REFLECTORS
TR9 FIRE SUPPRESSION EQUIPMENT
TR10 SURVIVAL SUPPLIES
SUSPENSION COMPONENTS
TR11 SHOCK ABSORBERS and BUMP STOPS
Shocks may not protrude through the hood.
TR12 SECONDARY SUSPENSION
TR13 WHEELS and TIRES
TR14 FASTENERS
STEERING and BRAKE COMPONENTS
TR15 STEERING
TR16 BRAKES
ELECTRICAL SYSTEM
TR17 IGNITION
TR18 BATTERIES
TR19 LIGHTS
TR20 STARTERS
FUEL SYSTEM
TR21 FUEL
TR22 FUEL TANKS
TR23 FUEL FILLERS LINES, VENTS, and CAPS
Fuel cell mandatory.
ENGINE, TRANSMISSION and DRIVELINES
TR24 ENGINE and ENGINE DISPLACEMENT
Engine must be of the same manufacturer basic design and type and have the same number of cylinders as the one installed by the manufacturer. Any displacement engine may be used as long as the original block casting remains the same. Block must be made of the same type of material as that of the block that is installed in the vehicle by the manufacturer for the particular chassis and body series. If vehicle is supplied with an aluminum block, only the aluminum block installed in the vehicle by the manufacturer may be used. Engine must be readily available to the general public in the U.S.A.
Any make of automotive carburetor may be used but is restricted to one four-barrel. Stock factory fuel injection may be used.
Items with no restrictions include:
- Strengthening and balancing
- Valve train and camshaft
- Bore and stroke
- Pistons
- Blueprinting
- Oil and water cooling systems
- Air cleaners
- Fuel pumps
- Exhaust system
Water and vapor injection not allowed unless originally equipped.
Engine must be located in the stock mounting location as delivered from the manufacturer ±1". This will be measured from the centerline of the front spindle to the back of the block. Height will be measured from frame rail to centerline of crank.
TR25 ENGINE REPLACEMENT
TR26 TRANSMISSION
DIFFERENTIALS
Rear differentials are open. Must retain straight axle type.
TR27 THROTTLES
TR28 EXHAUST
TR29 DRIVE SHAFTS
TR30 FLYWHEEL SHIELDS
TR31 FLUID COOLERS
TR32 AUXILIARY EQUIPMENT
TR33 SUPERCHARGERS and TURBOCHARGERS
VEHICLE SAFETY EQUIPMENT
TR34 ROLL CAGES
TR35 SAFETY HARNESS
TR36 SAFETY NETS
TR37 SEATING
GENERAL VEHICLE COMPONENTS
TR38 DRIVERS COMPARTMENT
TR39 DOORS AND LATCHES
TR40 FIREWALLS
TR41 BALLAST
TR42 WEIGHT
TR43 FLOORBOARDS
TR44 BUMPERS and HAZARDOUS PROTRUSIONS
TR45 MIRRORS
TR46 SKID PLATES
TR47 STORAGE
TR48 CHASSIS and BODY
Original wheelbase ±2 inches must be maintained.
Frames may be strengthened by adding material but must retain original stock configuration. No lengthening or narrowing of frame is allowed. No removal of material is allowed. Frame must remain stock length, but may be notched 8 inches (8”) at front of frame for ground clearance as long as top of frame rail is not modified. Rear frame maybe be notched at axle centerline. Total maximum notch length is eight (8) inches, four(4) inches in front of axle centerline and four (4) inches behind axle centerline. Maximum notch height is three and three quarters (3.750)inches, or to the bottom of the top horizontal frame section, whichever is shorter.
Body
Must maintain a production appearing body.
Stock appearing grill and headlight opening must be retained.
TR49 HOSES
TR50 IDENTIFICATION MARKINGS
Unlimited Off-Road Racing will assign race numbers.