Unlimited chassis and suspension truck or SUV with limited engine.

DEFINITION

Unlimited 4 wheel vehicles. Vehicles must have a production appearing Utility or Sports Utility body. Engines limited to approved sealed engines as supplied by American Off-Road Racing Championship engine suppliers. See American Off-Road Racing Championship engine builders list.

GENERAL REGULATIONS

Entrants in this class shall comply with all applicable general regulations.

TECHNICAL REGULATIONS

This class is an open 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

See TR1 in Car/Truck/Moto Technical Rules.

TR2 PROTECTIVE CLOTHING

See TR2 in Car/Truck/Moto Technical Rules.

TR3 EYE PROTECTION and DENTURES

See TR3 in Car/Truck/Moto Technical Rules.

TR4 HEAD AND NECK RESTRAINTS

See TR4 in Car/Truck/Moto Technical Rules.

TR5 FIRST AID KIT

See TR5 in Car/Truck/Moto Technical Rules.

TR6 EMERGENCY SIGNALING DEVICES

See TR6 in Car/Truck/Moto Technical Rules.

TR7 HORNS

See TR7 in Car/Truck/Moto Technical Rules.

TR8 REFLECTORS

See TR8 in Car/Truck/Moto Technical Rules.

TR9 FIRE SUPPRESSION EQUIPMENT

See TR9 in Car/Truck/Moto Technical Rules.

TR10 SURVIVAL SUPPLIES

See TR10 in Car/Truck/Moto Technical Rules.

SUSPENSION COMPONENTS

TR11 SHOCK ABSORBERS and BUMP STOPS

See TR11 in Car/Truck/Moto Technical Rules.

TR12 SECONDARY SUSPENSION

See TR12 in Car/Truck/Moto Technical Rules.

TR13 WHEELS and TIRES

See TR13 in Car/Truck/Moto Technical Rules.

TR14 FASTENERS

See TR14 in Car/Truck/Moto Technical Rules.

STEERING and BRAKE COMPONENTS

TR15 STEERING

See TR15 in Car/Truck/Moto Technical Rules.

TR16 BRAKES

See TR16 in Car/Truck/Moto Technical Rules.

ELECTRICAL SYSTEM

TR17 IGNITION

See TR17 in Car/Truck/Moto Technical Rules.

TR18 BATTERIES

See TR18 in Car/Truck/Moto Technical Rules.

TR19 LIGHTS

See TR19 in Car/Truck/Moto Technical Rules.

TR20 STARTERS

See TR20 in Car/Truck/Moto Technical Rules.

FUEL SYSTEM

TR21 FUEL

See TR21 in Car/Truck/Moto Technical Rules.

TR22 FUEL TANKS

Fuel cell mandatory.

TR23 FUEL FILLERS LINES, VENTS, and CAPS

See TR23 in Car/Truck/Moto Technical Rules.

ENGINE, TRANSMISSION and DRIVELINES

TR24 ENGINE and ENGINE DISPLACEMENT

Engine must be a GM LS525 (part number 19370413) or 525RLB (part number 19435005) 6.2 Liter or a Ford Ecoboost 3.5 liter V-6. All engines must be sealed and supplied by an American Off-Road Racing Championship Racing approved builder (see approved engine builder list).

Must use stock OEM fuel injector manifold. Complete intake assembly GM part number 19418251. Intake manifold GM part number 12686561. Throttle body GM part number 19420701. Fuel injectors GM part number 12576341. All parts must remain stock as delivered by the manufacturer.

The GM 525RLB 6.2 liter is delivered from GMC sealed. Seals cannot be removed, replaced, or tampered with. Valve covers must be sealed by the engine builder. Must run stock OEM intake manifold, fuel injectors, and throttle body. Fuel rails are open. Stock valley plate may be replaced or modified, to reverse the intake manifold.

The front drive including power steering pump, alternator, mechanical water pump, crank balancer are open. Pulleys and belts are open. Any stock oil pan may be used. Oil pan may be modified for fit. Must be resealed by an approved engine builder. No dry sump. Must use a stock production ecu. ECU may be reflashed.

This is a sealed motor class and the engine must be sealed by American Off-Road Racing Championship or one of its approved engine builders before it is installed into the vehicle.

If American Off-Road Racing Championship at any time during the racing season determines that any engine has an unfair advantage, we may equalize that engine either by a reduction in cc’s, restrictor sizing, turbo boost limits, etc. These changes may be required during the racing season.

TR25 ENGINE REPLACEMENT

See TR25 in Car/Truck/Moto Technical Rules.

TR26 TRANSMISSION/DIFFERENTIAL

Must use turbo 400 transmission. Any aftermarket replacement case may be used. Any under drive may be used.

TR27 THROTTLES

Fly by wire throttle pedals may be used.

TR28 EXHAUST

See TR28 in Car/Truck/Moto Technical Rules.

TR29 DRIVE SHAFTS

Straight axle, front engine only.

TR30 FLYWHEEL SHIELDS

See TR30 in Car/Truck/Moto Technical Rules.

TR31 FLUID COOLERS

See TR31 in Car/Truck/Moto Technical Rules.

TR32 AUXILIARY EQUIPMENT

See TR32 in Car/Truck/Moto Technical Rules.

TR33 SUPERCHARGERS and TURBOCHARGERS

See TR33 in Car/Truck/Moto Technical Rules.

VEHICLE SAFETY EQUIPMENT

TR34 ROLL CAGES

See TR34 in Car/Truck/Moto Technical Rules.

TR35 SAFETY HARNESS

See TR35 in Car/Truck/Moto Technical Rules.

TR36 SAFETY NETS

See TR36 in Car/Truck/Moto Technical Rules.

TR37 SEATING

GENERAL VEHICLE COMPONENTS

TR38 DRIVERS COMPARTMENT

See TR38 in Car/Truck/Moto Technical Rules.

TR39 DOORS AND LATCHES

See TR39 in Car/Truck/Moto Technical Rules.

TR40 FIREWALLS

See TR40 in Car/Truck/Moto Technical Rules.

TR41 BALLAST

See TR41 in Car/Truck/Moto Technical Rules.

TR42 WEIGHT

See TR42 in Car/Truck/Moto Technical Rules.

TR43 FLOORBOARDS

See TR43 in Car/Truck/Moto Technical Rules.

TR44 BUMPERS and HAZARDOUS PROTRUSIONS

See TR44 in Car/Truck/Moto Technical Rules.

TR45 MIRRORS

See TR45 in Car/Truck/Moto Technical Rules.

TR46 SKID PLATES

See TR46 in Car/Truck/Moto Technical Rules.

TR47 STORAGE

See TR47 in Car/Truck/Moto Technical Rules.

TR48 CHASSIS and BODY

Must maintain a production appearing utility or sports utility body.

Stock appearing grill and head light opening must be retained.

Body subject to American Off-Road Racing Championship approval.

TR49 HOSES

See TR49 in Car/Truck/Moto Technical Rules.

TR50 IDENTIFICATION MARKINGS

See TR50 in Car/Truck/Moto Technical Rules.

TR51 ADVERTISING on VEHICLES

See TR51 in Car/Truck/Moto Technical Rules.

TR52 RADIO EQUIPMENT

See TR52 in Car/Truck/Moto Technical Rules.

TR53 WORKMANSHIP

See TR53 in Car/Truck/Moto Technical Rules.

TR54 TRACKING DEVICE

See TR54 in Car/Truck/Moto Technical Rules.