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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 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.
IMCA Latemodel – full-bodied late model race cars; IMCA RaceSaver Sprint Car – traditional 305 non-winged and winged sprint cars; IMCA Stock Car – full-bodied production stock cars; IMCA Hobby Stock – 8-cylinder rear wheel drive entry-level division; IMCA Northern Sport Modified – same as modifieds but with smaller engines and more ...
Knoxville Raceway is a semi-banked half-mile dirt oval raceway (zook clay) located at the Marion County Fairgrounds in Knoxville, Iowa.Races at the "Sprint Car Capital of the World" are held on Saturday nights from April through September each year.
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).
However, certain engine sizes were common, and could be considered the "standard" Offenhauser engines: [7] 97 cu in (1.59 L) - to meet the displacement rule in many midget series; 220 cu in (3.6 L) - displacement rule in AAA (later USAC) sprint cars; 270 cu in (4.4 L) - displacement rule for the Indianapolis 500 under AAA rules [11]
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
The High Limit Racing series, currently known as the Kubota High Limit Racing Series for sponsorship reasons, is an American touring sprint car racing series. It was founded in 2022 by five-time World of Outlaws sprint car series champion Brad Sweet and former NASCAR Cup Series champion Kyle Larson.