The EC and ED family are a series of 3.0-litre and 3.5-litre, naturally-aspirated, V8, Formula One racing engines, designed, developed and produced by Cosworth, in partnership with Ford; and used between 1994 and 1997. The customer engines were used by Benetton, Sauber, Forti, Lola, Simtek, Pacific, Minardi, and Tyrrell.