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The first weekly races were held at the Knoxville Raceway in 1954. After internal issues with the sanctioning body—the Southern Iowa Stock Car Racing Association—in 1956, Marion Robinson of Des Moines, Iowa was appointed as race promoter. During Robinson's tenure, the cars progressed from stock cars to modifieds to supermodifieds to sprint ...
Regular events include 410 cubic inch sprint cars, 305 cubic inch sprint cars, and dirt trucks. In 2024, the World of Outlaws sprint car series returns to the speedway for the first time since 2016. The speedway has previously hosted the All Star Circuit of Champions , National Sprint Tour , and United States Auto Club .
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). [4] [5 ...
Sprint cars are open-wheel race cars, designed primarily for the purpose of running on short oval, circular dirt or paved tracks. Historically known simply as "big cars," distinguishing them from "midget cars," sprint car racing is popular primarily in the United States and Canada, as well as in Australia, New Zealand, and South Africa.
The class most resembling the North American form of stock car racing are known as Saloon cars. Super Saloons are similar to dirt late models with the main differences being the bodies closer resemble production cars, use iron engines up to 7.1 litres (434 cu in) with no rear offset and run much larger sprint car tyres on the rear.
The number of sprint races were doubled to six, while Saturday was designed ‘sprint day’ - with a new “sprint shootout” qualifying session determining the grid for the sprint race.
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