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Al Unser Sr. was the first Cosworth DFX-powered Indianapolis 500 winner in 1978 1978 Indy 500 winner Al Unser Sr. also was the first driver to win an Indy car race with the Cosworth DFX engine, at Pocono in 1976
1978 Indy 500 winner Al Unser Sr. also was the first driver to win an Indy car race with the Cosworth DFX engine, at Pocono in 1976 Al Unser Sr. was the first Cosworth DFX-powered Indianapolis 500 winner in 1978
Janet Guthrie