DESCRIPTION OF RACING CLASSES

AIR COOLED
Must be air-cooled. Usually powered by motorcycle or Volkswagen engines.

4 CYLINDER
Must be 4 cylinders.

6 CYLINDER
Must be 6 cylinders. V6 or straight 6.

V8 STOCK
Must be stock V8 engine block according to manufacturer's specifications.

MODIFIED 4WD
Must be driven by all 4 wheels. Engine of choice; big block Chevrolet modified with high performance parts.

PRO MODIFIED
Same as above, except 2 wheel drive. These engines can develop nearly 1,000 horsepower.