Limited Full Size truck or SUV

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:

1. Strengthening and balancing
2. Valve train and camshaft
3. Bore and stroke
4. Pistons
5. Blueprinting
6. Oil and water cooling systems
7. Air cleaners
8. Fuel pumps
9. 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.

TR51 ADVERTISING on VEHICLES

TR52 RADIO EQUIPMENT

TR53 WORKMANSHIP

TR54 TRACKING DEVICE