The Griffon in the Shackleton was a Mk 57 produced 1960hp, 2345hp with WM injection for take off.
Some test Spitfire XIVs, 21s, and 24s were fitted with contra-rotating propellers, which eliminated the torque effect. Early problems with the complex gearbox that was required for contra-rotating propellers prevented them from ever becoming operational in Spitfires, but they were used on later aircraft, including the Seafire FR. Mk 46 and F and FR.47, which were fitted with Griffon 87s driving contra-rotating propellers as standard equipment. The Griffon 57 and 57A series, installed in Universal Power Plant (UPP) installations and driving contra-rotating propellers, was used in the Avro Shackleton maritime patrol aircraft.
2,420 hp (1,805 kW) at 5,000 ft (1,524 m) in L.S gear, 2,250 hp (1,678 kW) at 14,500 ft (4,419 m) M.S and 2,050 hp (1,529 kW) at 21,000 ft (6,400 m) F.S; reduction gear ratio 4.44; modified to drive contra-rotating propellers; Rolls-Royce fuel injection system.