Ford Indy V8 engine
The Ford Indy V8 engine is a naturally-aspirated, DOHC, V-8, Indy car racing engine, initially specially designed by Ford for use by Team Lotus (but later used by other teams as well), to compete in the Indianapolis 500; from 1963 to 1967. This is the engine that gave Jim Clark the victory in 1965 with his Lotus 38 chassis, Graham Hill victory in 1966 with his Lola T90 chassis, and A. J. Foyt the win at Indianapolis in 1967, in his Coyote 67 chassis.
| Ford Indy V-8 | |
|---|---|
| Overview | |
| Manufacturer | Ford |
| Production | 1963–1971 (Ford engine) 1972–1978 (Foyt-badged engine) |
| Layout | |
| Configuration | 90° V-8 |
| Displacement | 159–320 cu in (2.61–5.24 L) |
| Cylinder bore | 3.76–3.80 in (96–97 mm) |
| Piston stroke | 2.87 in (73 mm) |
| Valvetrain | 32-valve, DOHC, four-valves per cylinder |
| Compression ratio | 10.2:1-12.5:1 |
| Combustion | |
| Fuel system | Mechanical fuel injection |
| Fuel type | Gasoline |
| Oil system | Dry sump |
| Output | |
| Power output | 375–800 hp (280–597 kW) |
| Torque output | 269–525 lb⋅ft (365–712 N⋅m) |
| Dimensions | |
| Dry weight | 350–406 lb (159–184 kg) |
| Chronology | |
| Successor | Ford-Cosworth Indy V8 engine |
A smaller Garrett turbocharged 159 cu in (2.61 L) engine was introduced in 1968, and gave Mario Andretti the win in his Brawner Hawk chassis at the 1969 Indianapolis 500. This engine was used throughout the 1969 and 1970 seasons, until 1971 (their last season), after which Ford pulled-out and withdrew from the series for 1972. They would not return to Indy car racing until 1976, with the Ford-sponsored Cosworth DFX engine.