IMCA MODIFIED RULES APPLY WITH THE FOLLOWING EXCEPTIONS:

MOTOR:

1. ENGINE 362 max cubic inch with GM 350 block & stock stroke 3.48 crank. Flat top pistons. Ford 361 (351 stock block & stroke) Mopar 370 (360 stock block & stroke). NO 400 BLOCKS.

2. CAMSHAFT LIFT RULE: .480"MEASURED AT THE VALVE, Aluminum roller rockers allowed. (Valve can only move .480" at top of the valve) .030 MAX. LASH ALLOWANCE.

(NO VACUUM RULE) NO ROLLER CAM SHAFTS OR ROLLER LIFTERS.

3. OEM CAST IRON HEADS: SR or VORTEC heads OK. 2.02" intake & 1.60 exhaust valves max. 23 degree heads only. No angle plugs allowed. No porting or polishing of heads & intake.

No match porting of intake or heads. No angle milling. No ALUMINUM heads.

4. No mismatching of engine parts. GM to GM, Ford to Ford.

5. No ALUMINUM parts except for intake manifolds, pulleys, valve covers, radiator, water pumps, roller rocker arms and flywheel.

6. No belt drive fuel pumps.
7.INTAKE – Any mass produced aluminum intake allowed. Intake may NOT be reworked under carburetor area. No gasket matching, porting or polishing of any kind allowed. Max 1-1/2" adapter/spacer allowed.

CARBURETOR AND FUEL

1. Carburetor can be no larger than a Holley #4412 500 CFM 2 barrel and must pass inspection from top side with gage. Bottom of carburetor can be no larger than 1 11/16" in diameter. (Must be stock Ventura 1-3/8") May run Rochester 2 barrel.

2. Alcohol or racing fuel OK. NO ADDITIVES.

3. Rear fuel cell panel optional.

4. RECOMMENDED: IF a new car is being built or the fuel cell is being replaced, replace with 22 gallon maximum capacity.

SPOILER.

1. 8" MAXIMUM rear spoiler MANDATORY. To be measured deck to full length of spoiler including wicker bill & angles.

WEIGHT.

1. Weight with driver after race 2500 lbs minimum. NO MOUNTED WEIGHTS ABOVE DECK METAL!

TIRES AND WHEELS.

1. ANY ASPHALT PULL-OFFS OR MODIFIED PULL-OFFS. NO tires softer than a 55 compound allowed. NO recaps.

2. Steel wheels only 10" maximum. Bead-locks allowed.

TRANSMISSIONS.

1. STANDARD: OEM 3 or 4 speed only. Clutch, flywheel & pressure plate 10" minimum. Must have steel blow proof bell housing. Automatics must have working 10" torque converter minimum. No direct drive or mini clutches. No BERT or BRINN transmissions .

IGNITION.

1. MSD ignition 6 AL allowed.

2. NO MAG type distributors.

PROTEST.

There is a $125 car protest fee. If you win the protest, you will get $100 back. If you loose protest, the $100 will go to the driver protested.  $25 GOES TO POINTS  FUND     . If the car is found to be illegal, the driver will loose the points and money for that night.

A Window net OR ARM RESTRAINTS is Mandatory in 2008. This is IMCA rule. No Traction control devices. NO MOTOR SWAP RULE.

Visiting E-MODS will be allowed one courtesy night (on minor infractions) and then must comply with the above rules.

After 4 feature wins at Central Arkansas Speedway LLC, the track has the option to tear down the 4 time winners engine. If the engine is found to be legal after inspection, the track will supply the driver with a replacement gaskets . ONE HEAD GASKET AND ONE INTAKE GASKET