The DFV engine, whose development was funded by Ford and which was designed and constructed by Cosworth, was normally aspirated with eight cylinders arranged in a v configuration (i.e. a V8) of 90 degrees. The block was made from aluminium alloy and the cylinder liners from iron. It had four valves per cylinder, actuated by double overhead camshafts. Liquid-cooling was provided by a radiator situated in the nose which vented through ducts in the upper body surface whilst the engine oil was cooled by a radiator mounted on top of the gearbox at the rear. Peak power was at 9,000 rpm. The gearbox was a Hewland DG300.