All Classes will be required to have brakeway switch in rear of car.

PRO STOCK OR CLASS 3 TRUCKS
Engine:
1. Any factory production automotive type engine permitted (engine modifications permitted).
2. No aluminum blocks permitted.
3. Maximum of single 4-barrel carburetor, split dominator allowed, naturally aspirated.
4. Engine must be in front of firewall.
5. Factory options permitted.
6. Engine set back can be no more than 12” from center of front drive axle to #1 spark plug.
Fuel:
1. Gasoline, Racing Gas, or diesel fuel only.
2. No nitro methane, alcohol, fuel accelerators, or nitrous oxide allowed. If vehicle is ca pable of running nitrous, the bottle must be removed and lines disconnected at the so lenoid.
Exhaust:
1. Competition exhaust permitted.
2. Exhaust must be directed updraft or downdraft headers away from driver or fuel tank and spectators
Brakes:
1. Dual reservoir master cylinder that provides a primary and secondary brake system required.
2. Primary and secondary brake system must be independently capable of stopping vehicle.
3. Four wheel brakes are mandatory. Driveshaft brakes may be used along with wheel brakes. All driveshaft/driveline brakes must be located at differential.
4. Main supply lines from master cylinder cannot be “T’d” to connect front and rear reservoir. Factory single reservoir not acceptable.
Suspension:
1. Ladder bars and 4-link with coilovers acceptable.
2. Aftermarket lift kits acceptable.
3. Front suspension is only allowed a maximum of 2” block.
4. Mounting will be subject to inspection by Tech Official.

Tires:
1. D.O.T. approved. No cut tires. 2. 45” maximum height, 46” for Mickey Thompson Tires
Body:
1. Body may be steel and/or fiberglass. Must be stock replacement.
2. Any fiberglass body parts must resemble original.
3. Vehicle must have complete floor pan.
4. Vehicle must have firewall between driver and engine.
Transmission & Chain Drive:
1. Any Type Transmission or Slipper Clutch
2. Any type transfer case or chain driven allowed
3. Must be 4-Wheel Drive

CLASS 4 MODIFIED
Qualifications:
1. Front or Rear Engine Cars allowed
2. Vehicle must be 4-wheel drive with front and rear differentials. Front may be chain or gear driven.
3. Factory or tube frame (chassis) and any body allowed.
General:
1. Fire suit MANDATORY.
2. Driveshaft loops and U-joint protectors required.
3. Safety Equipment.
4. Kill switch.
Engine:
1. Any automotive type engine permitted (engine modifications permitted).
2. Naturally aspirated only. No turbo or superchargers.
3. Rear engine acceptable.
4. Must have steel or shielded balancer.
Fuel:
1. Gas or alcohol only.
2. No nitro methane or fuel accelerators allowed.
3. Nitrous Oxide allowed.
Exhaust:
1. All exhaust on competition vehicles must either point straight up or straight back. No Exceptions.
Brakes:
1. Dual reservoir master cylinder that provides a primary and secondary brake system required.
2. Primary and secondary brake system must be independently capable of stopping vehicle.
3. Four wheel brakes are mandatory. Driveshaft brakes may be used along with wheel brakes. All driveshaft/driveline brakes must be located at differential.
4. Main supply lines from master cylinder cannot be “T’d” to connect front and rear res ervoir. Factory single reservoir not acceptable.
Suspension:
1. Type of front and rear suspension optional. 3 or 4-link acceptable.
2. On 3 or 4-link suspensions, set up to pull from rear axle hitching point, there must be solid loop or tow hook. If hitching point is on frame, it is recommended that axle travel limiting straps be used.
Tires:
1. D.O.T. approved only. Cut tires will be allowed. Vera Track tires on front only.
2. 45” maximum height.
Body:
1. Body must be constructed of metal and/or fiberglass and must extend to firewall.
2. Vehicle must have floor plate or floor pan over transmission and driveline.
3. Vehicle must have firewall between driver and engine.
4. Driver’s compartment, frame structure, roll bar and body must be designed to prevent driver’s body or limbs from making contact with wheels, exhaust or track surface.
5. Door windows and window hardware may be removed. Side and rear windows may also be removed. . 150” maximum wheelbase. General:

OPEN CLASS V
1.Must Comply to NMRO Rules Class V