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Holley-style carburetors powered every NASCAR Sprint Cup team and every NHRA Pro Stock champion until both series eventually switched to electronic fuel injection (EFI). NASCAR Sprint Cup engines still utilize a Holley throttle body and Holley EFI is the spec EFI system in NHRA Pro Stock.
Morgan–McClure Motorsports was an American auto racing team that competed in the NASCAR Cup Series full-time until 2007. It operated for 28 years, starting in 1983 and ending in 2012. It operated for 28 years, starting in 1983 and ending in 2012.
Sprint Cup vehicles (powered using carburetors) can only go up to 185 miles per hour or 298 kilometres per hour at a typical Daytona 500 race [13] while the NASCAR Camping World Truck Series pickup trucks can do up to 190 miles per hour or 310 kilometres per hour [13] and don't require restrictor plates. The fuel-injected NASCAR Sprint Cup ...
The 2011 Sprint Cup season was the last complete Cup season with carbureted engines; at the end of the 2011 season, NASCAR announced that it would change to an electronic fuel injection system for the 2012 racing season. [24] NXS cars do, however, continue to use carburetors. However, modern technology has allowed power outputs near 900 ...
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 ...
One popular idea was to use 231–275 cu in (3.8–4.5 L) six-cylinder engines; instead of Cup Series' 358 cu in (5.9 L) V-8s. [5] [6] [7] In 1989, NASCAR changed rules requiring cars to use current body styles, similar to the Cup cars. However, the cars still used V6 engines. The cars gradually became similar to Cup cars.