Design began on a new V-12 engine named Griffin in 1939. The Griffin was designed to deliver 1,500 hp at low altitudes for naval torpedo bombers. It was also designed to be compact so it could possibly replace the Merlin in some applications.

models

• Griffon 57A: 2,455 hp (1831 kW)

specifications

• V-12 piston engine
• Liquid cooled
• Displacement 2,239 cubic inches (36.7 litres)
• Bore x stroke: 6 x 6.6 inches

used by

• Avro Shackleton