Here are the engine types and ratings for various Hawk 87s...
P-40D, E and E-1: V-1710-39/F3R
T.O.: 1150bhp @ 3000rpm @ Sea Level. Manifold Pressure 46.2" HG.
Military: 1150bhp @ 3000rpm @ 12000ft.
Normal: 1000BHP @ 2600rpm @ 11000ft. Manifold Pressure 38.7" HG.
P40F: V-1650-1 Merlin
T.O.: 1300bhp @ 3000rpm @ Sea Level. Manifold Pressure 54.3" HG.
Military: 1240bhp @ 3000rpm @11800ft. Manifold Pressure 48.2" HG.
Normal: 1080bhp @ 2650rpm @ 9500ft. Manifold Pressure 44.2" HG.
P-40K: V-1710-73/F4R
T.O.: 1325 @ 3000rpm @ Sea Level No MP given.
War Emerg. : 1550bhp @ 3000rpm @ Sea Level(Rammed)
Military: 1150bhp @ 3000rpm @ 11800ft.
Normal: 1000 @ 2600rpm @ 11000ft.
P-40M/N-1: V-1710-81/F20R
P-40N20/-35: V-1710-99/F26R
P-40N-40: V-1710-115/F312R
T.O.: 1200 @ 3000rpm @ Sea Level
W.E.: 1360 @ 3000rpm @ Sea Level(Rammed)
Military: 1125 @ 3000rpm @ 14600~15500ft.
Normal: 1000 @ 2600rpm @ 13800~14000ft.
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Personally speaking, the P-40 could contend on an equal footing with all the types of Messerschmitts, almost to the end of 1943.
~Nikolay Gerasimovitch Golodnikov
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