Ford-Cosworth EC / ED engine

The Ford-Cosworth EC and ED family are 3.0 litre and 3.5 litre naturally aspirated V8 Formula One racing engines, designed, developed and produced by Ford and Cosworth and used between 1994 and 1997. The 3.5 litre EC was a Cosworth-built, Ford-financed development of the HB; it raced exclusively with Benetton in 1994 under the name Ford Zetec-R, and Michael Schumacher won the drivers' world championship with it, the last Ford-powered Formula One title. When the displacement limit fell to 3.0 litres for 1995 it became the ECA, used by Sauber, Forti and later Lola. The ED was a customer engine for smaller teams such as Minardi, Simtek, Pacific and Tyrrell, a further development of the old HB that was not badged as a Ford Zetec-R, and it was not competitive, scoring only three world championship points in three years. Both have a 75 degree cylinder bank angle, with two overhead camshafts per bank and two intake and two exhaust valves per cylinder.