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Holley continued its dominance in racing, powering all winning NHRA Pro Stock racers and all NASCAR Sprint Cup Series teams. The 1980s also saw Holley's entrance into the fuel injection market where OEM EFI components and analog Pro-Jection retrofit fuel-injection systems for carbureted cars were introduced.
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 ...
Today most American stock cars may superficially resemble standard American family sedans but are in fact silhouette cars: purpose-built racing machines built to a strict set of regulations governing the car design ensuring that the chassis, suspension, engine, etc. are architecturally identical to those in stock production vehicles.
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.
Hyak Motorsports (formerly JTG Daugherty Racing, JTG Racing, and ST Racing) is an American stock car racing team that competes in the NASCAR Cup Series.The team fields the No. 47 Chevrolet Camaro ZL1 full-time for Ricky Stenhouse Jr. and has a technical alliance with Hendrick Motorsports.
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 ...