The Offenhauser or "Offy" is a racing engine that dates back to the 1950s. It features a revolutionary design that casts the block and cylinder head as one piece, eliminating headgasket failures under high compression and boost. This Indy car is a 1972 Chassis that won the 1973 Indianapolis 500 with Gordon Johncock at the wheel. it's 4 cylinder, 159 cu.in Offy engine makes over 700 horsepower! | Hemmings

"The greatest race engine of all time" is a big, BIG statment, especially for a 4cyl 16V turbo engine, but it's said a lot about this engine, and I think I agree. This is the Offy Turbo, an engine first used in 1933, 89 years ago (in N/A form), and was making BIG power right back in the 1960s, long before 99% of people had even heard of a turbo, and making as much as 1200bhp and revving to 10,000rpm in the early 1970s! This video is all about these engines, showing them in detail in a variety of