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
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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

Photographer Ford Motor Company
Taken 1978-05-28
Series USAC
Event Indianapolis 500
Sub-event Race
Track Indianapolis Motor Speedway
Drivers Al Unser Sr.
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