30-2-promo copy



  • Supermodifieds are generally constructed from aircraft-quality .095 thick chromium-molybdenum ("chromoly") frame tubing with steel and aluminum components.
  • The bodies are fabricated from fiberglass and aluminum.
  • The cars are powered by American fuel-injected Chevrolet Big Block V8 engines that run-on methanol fuel and can produce in excess of 800 horsepower.
  • At a weight of around 1,850 pounds the cars achieve an enormous power-to-weight ratio. 
  • We run the mandatory cast iron big block with aluminum heads bored to the allowable maximum displacement of 481 cu.
  • Modern era supermodifieds run a radical offset chassis that is up to 18 in. to the left of center.
  • The engine and driveline components themselves are mounted in a specially-fabricated area placed outside the left side frame rails. The engine is thus a stressed member of the chassis. This allows weight distribution to favor the left side (often as much as .67999) and thereby aid cornering around the left-hand turns of an oval track.
  • The giant wings, (generally 24 sq ft (2.2 m2)' max), mounted on the roll cage of the cars bear a resemblance to those found on sprint cars and serve a similar purpose, designed to produce down force and allow them to make tight turns at high speed. Generally the wing is mounted to the suspension or chassis by pneumatic struts.
  • The racing slick tires used on a supermodified are among the widest used in pavement oval racing.
  • Like sprint cars, supermodifieds do not have starters, batteries, or transmissions and are push-started.
  • The combination of high power, light weight, and high cornering ability allow supermodifieds to average over 120 miles per hour on a 1/2-mile, 150 mph on a 5/8-mile with top speeds over 160 mph on pavement oval tracks.