Ford Indy V8 engine

The Ford Indy V8 engine is a racing V8 that Ford designed for Indianapolis-style racing from 1963, mounted behind the driver in Lotus chassis to challenge the front-engined Offenhauser roadsters. The first version was a 4.2 litre normally aspirated pushrod unit; double overhead camshafts followed in 1964, and DOHC cars won the Indianapolis 500 in 1965, 1966 and 1967. From 1968 a smaller turbocharged version of about 2.6 litres took further wins, including Mario Andretti in 1969, until Ford withdrew after 1971 and A. J. Foyt took over the design, which won again in 1977 as the Foyt V-8. A downsized 3.0 litre variant, the Ford 406, was used briefly in a McLaren Formula One car in 1966.