Ford-Cosworth Indy V8 engine
motor vehicle engine
The Ford-Cosworth Indy V8 engine is a series of mechanically similar, turbocharged, 2.65-liter V-8 engines, designed and developed by Ford in partnership with Cosworth for use in American open-wheel racing. It was produced for over 30 years and was used in the United States Auto Club (USAC) Championship Car series, CART, and Champ Car World Series between 1976 and 2007. The DFX engine was the Indy car version of the highly successful 3-liter Ford-Cosworth DFV Formula One engine developed by former Lotus engineer Keith Duckworth and Colin Chapman backing from Ford for the Lotus 49 to campaign the 1967 season. This engine had 155 wins between 1967 and 1985 in F1. The DFX variant was initially developed for Indy car use by Parnelli Jones in 1976, with Cosworth soon taking over. This engine won the Indianapolis 500 ten consecutive years from 1978 to 1987, as well as winning all USAC and CART championships between 1977 and 1987. It powered 81 consecutive Indy car victories from 1981 to 1986, with 153 Indy car victories total.
DFX
One of the most successful and longest-lived projects of Cosworth has been its Indy car engine program. In 1975; Cosworth developed the DFX, by destroking the engine to 2.65 L and adding a turbocharger, the DFX became the standard engine to run in IndyCar racing, ending the reign of the Offenhauser, and maintaining that position until the late 1980s.
A 2.65-L turbocharged version of the DFV was developed privately by the Vels Parnelli Jones team for the 1976 USAC season, in the face of opposition from Duckworth.
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