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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.
Henceforth it became known as the DFX. It went on to dominate American Indy car racing in much the same way the DFV had dominated Formula One. The engine won the Indianapolis 500 ten consecutive years from 1978 until 1987, as well as winning all USAC and CART championships between 1977 and 1987 except for one.
Cosworth DFX Cosworth DFS One of the most successful and longest-lived projects of Cosworth has been its CART / Champ Car engine programme. In 1975; Cosworth developed the DFX , by destroking the engine to 2,650 cc (161.7 cu in) and adding a turbocharger , the DFX became the standard engine to run in IndyCar racing, ending the reign of the ...
Cosworth DFX: 200 Running 1000 2 1 1 Tom Sneva: Penske PC-6 Cosworth DFX: 200 +8.09 800 3 6 20 Gordon Johncock W Wildcat 78 DGS 199 Flagged 700 4 13 40 Steve Krisiloff: Wildcat DGS 198 Flagged 600 5 7 6 Wally Dallenbach Sr. McLaren 77 Cosworth DFX: 195 Out of fuel 500 6 19 48 Bobby Unser W Eagle 78 Cosworth DFX: 195 Flagged 400 7 20 14 A. J. Foyt W
IndyCars with Ford engines first competed in 1935 using a production-based Ford flathead V8 engine in the Miller-Ford racer. [7] [8]With the Offenhauser 4cyl 4.4 litre engine mounted in front-engine roadsters dominating Indy 500 races since the 1930s, and with a British Invasion of successful nimble rear-mid-engine Formula One single seater coming to the US, like two time F1 World Champion ...
Cosworth DFX: 17 Dominic Dobson: 3 JP Racing: March 86C: Cosworth DFX: 35 Spike Gehlhausen: 3 Kraco Racing: March 87C: Cosworth DFX: 18 Michael Andretti: All Leader Cards Racing: March 87C: Cosworth DFX: 24 Randy Lewis: All Los Angeles Drywall: March 85C: Cosworth DFX: 19 Dick Ferguson: 3 27 9 Machinists Union Racing: March 87C: Cosworth DFX ...
The team dropped the Cosworth DFX and the took up development of the Judd AV engine. The engine was known to be down on horsepower, but excelled in fuel mileage and reliability, particularly in the 500-mile races.
Cosworth DFX V8t Goodyear Pole: 123 34 June 24 USAC Pocono 500 (O) 14: A. J. Foyt (33) Parnelli VPJ-6C Cosworth DFX V8t Goodyear Pole: 128 35 July 29 USAC Texas World Speedway (O) 14: A. J. Foyt (34) Parnelli VPJ-6C Cosworth DFX V8t Goodyear Pole: 68 36 1981: June 21 USAC Pocono 500 (O) 14: A. J. Foyt (35) March 81C Cosworth DFX V8t Goodyear ...