According to Lumsden, the Griffon 57A was capable of 2500hp at takeoff (dry), 2030hp @ 1750ft and 1830hp @ 10,000ft.
The Griffon 65 1900hp @ take off (+18psi), 2005hp @ 6000ft (+18psi) and 1810hp @ 20,500ft (+18psi) - all with 100/130 fuel. With 115/145 fuel teh Griffon 65 made 2300hp @ 650ft (+25psi).
Griffon 101 was rated at 2440hp @ 6000ft, 2300hp @ 15,750ft and 2085hp @ 23,000ft "maximum climb".