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Sprint Cars are powered by a naturally-aspirated, methanol-injected overhead valve V-8 engines; with a displacement of 410 cubic inches (6.7L) and capable of engine speeds approaching 9000 rpm. [3] A lower-budget and very popular class of sprint cars uses 360-cubic-inch (5.9L) engines that produce approximately 700 horsepower (520 kW).
The American Sprint Car Series (ASCS) sanctions both winged and wingless sprint car racing within the United States. ASCS winged cars use a 360 cubic inch engine which lead to fans calling the cars "360s". The series was started by well-known racing promoter Emmett Hahn.
The Offenhauser Racing Engine, or Offy, is a racing engine design that dominated American open wheel racing for more than 50 years and is still popular among vintage sprint and midget car racers. [ 1 ] [ 2 ] [ 3 ]
The USAC/CRA AMSOIL Sprint Car Series debuted in 2004 utilizing the same cars and 410ci engines that race in USAC's AMSOIL National Sprint Car Championship at dirt oval tracks across California and Arizona. The series also features combination races with the AMSOIL USAC Sprint Car National Championship. Champions
World of Outlaws Sprint Car Series, originally known as the World of Outlaws (often abbreviated WoO) is an American national touring dirt track racing series. It is owned and operated by World Racing Group, and was rebranded when the World of Outlaws Late Model Series was introduced. [1]
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 allows supermodifieds to average over 120 mph (190 km/h) on a 1/2-mile oval and 150 mph (240 km/h) on a 1-mile (1.6 km) oval, with top speeds over 190 mph (310 km/h).
Despite never powering a Championship Car race winner, few engines have become as famous in automobile racing as the Novi. [citation needed] The final STP-version of the Novi V8 had a revised two-stage centrifugal supercharger and was 2,741.29 cc (2.74 L, 167.28 cid) with bore and stroke of 81.28 mm × 66.04 mm (3.200 in × 2.600 in).
Fred H. Offenhauser, Jr. (November 11, 1888 – August 17, 1973), was a machinist and self taught automotive engineer who developed the Offenhauser racing engine, nicknamed the "Offy", which dominated competition in the Indianapolis 500 race for decades. He also built the Novi engine, which was designed by Bud Winfield and Leo Goossen.
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