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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.
Citing a shrinking market for mechanical fuel injection systems and parts, Holly announced in February of 2024 that they would cease production of Hilborn components. [ 5 ] Hilborn was inducted into the Specialty Equipment Market Association (SEMA) Hall of Fame, [ 6 ] as well as the HOT ROD Magazine Speed Parts Hall of Fame for the first ...
In the context of racing, nitrous oxide is often termed nitrous or NOS.The term NOS is derived from the initials of the company name Nitrous Oxide Systems, Inc. (now a brand of Holley Performance Products) one of the pioneering companies in the development of nitrous oxide injection systems for automotive performance use, and has become a genericized trademark.
For 1984 HSC engines for US 50 state cars were fitted with a 1-barrel Holley 6149 carburetor, while cars for Canada received a non-feedback Holley Model 1949. [4] In 1985 American-market engines received Central Fuel Injection (CFI), which reduced power to 86 hp (64 kW). [ 8 ]
In 1987, it used a two-barrel Holley carburetor and hydraulic valve lifters. In 1988, it was upgraded with throttle-body fuel injection and roller lifters. For the 1992 Magnum update, the throttle-body fuel injection was upgraded to a multi-port fuel injection system. In 1997, it was then upgraded to sequential fuel injection. The engine was ...
Between the end of 1991 and the beginning of 1992, Rochester Products, at the request of General Motors do Brasil, launched on the Brazilian market the first electronic fuel injection in the world programmed and developed for ethanol in the Chevrolet Monza, Chevrolet Kadett and Chevrolet Ipanema, known in Europe such as Opel Ascona, Opel Kadett ...