Ford Indy V8 engine

Ford ended the works campaign after 1971, handing over the design to AJ Foyt who continued until 1978, winning the Indy 500 in 1977.

Concurrently, in England, Ford had since 1965 sponsored the successful Cosworth DFV Formula One engine, a more compact DOHC V8, designed for 3.0 litre.

[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 Jack Brabham to the 1961 Indianapolis 500, it was time for a change.

With the intakes as usual in the V, the 4195 cc (255ci) pushrod[9] Ford V8 with Weber carburettors produced 376 bhp (280 kW) through a Colotti T.37 gearbox.

To gain power for 1964, double overhead camshafts (DOHC[10]) were installed in the Lotus 34, in reverse manner, with the exhausts in the V, intake trumpets at the sides.

This four-cam 4195 cc (255ci) DOHC Ford V8 with Hilborn fuel injection produced 425 bhp (317 kW), through a ZF 2DS20 gearbox.

Thus, a smaller but Garrett turbocharged 159 cu in (2.61 L) Ford engine was introduced in 1968, and gave Mario Andretti the win in his Brawner Hawk chassis at the 1969 Indianapolis 500.