+ Allison Engine Company V-1710
+ Armstrong Siddeley Genet II
+ BMW ML (801C)
+ Boeing 502 (T50) Cutaway
+ Bradley V-8
+ Chrystler XIV-2220-1
+ Continental Motors A-65-8
+ Curtiss Aeroplane & Motor Company D-12
+ Curtiss Aeroplane & Motor Company D-12
+ Curtiss Aeroplane & Motor + Company OX-5
+ Detroit Aero
+ Elbridge Featherweight
+ Fiat A-12
+ Franklin Engine Company O-805-2
+ Franklin Engine YT-58-GE-2A
+ Gnome Engine Company B-2 Monosoupape
+ Gnome Engine Company 7 Omega
+ Guibeson Diesel Engone Company T-1020
+ Hall-Scott Motor Car Company A-2
+ Heath Airplane Company B-4
+ Hispano-Suiza V-8
+ Junkers Jumo 004B
+ Lawrance Aero Engine Company J-1
+ Lawrance Aero Engine Company L-4
+ Lycoming Engines O-145-C3
+ Lycoming Engines T53-L-11B
+ New Britain Machine Co. Angle
+ New Britian Machine Co. Hodge Differential Rotary
+ Packard Motor Car Company 1A-1551
+ Packard Motor Car 3A-2500
+ Packard Motor Car V-1650-1 Merlin
+ Pratt & Whitney J57 (JT3)
+ Pratt & Whitney PT6 Cutaway
+ Pratt & Whitney R-985 Wasp Junior
+ Pratt & Whitney R-1340 Wasp A
+ Pratt & Whitney R-1340 Wasp C
+ Pratt & Whitney R-1240-O Wasp C
+ Pratt & Whitney Roscoe Turner’s R-1340 Wasp
+ Pratt & Whitney R-1690 Hornet
+ Pratt & Whitney R-1830-86 Twin Wasp
+ Pratt & Whitney R-2800-39 Double Wasp
+ Pratt & Whitney R-4360 Wasp Major
+ Pratt & Whitney RL 10A-1
+ Ranger Engine and Airplane Corporation L-440 (C-440C)
+ Rockwell 2-Cylinder
+ Rolls-Royce Limited Nene II
+ Smith Aircraft Engine
+ Union Gas Engine Company Aero
+ Westinghouse Aviation J34 (24C) Cutaway
+ Wright Aeronautical R-1820-45 Cyclone
+ Wright Aeronautical R-3350-23 Cyclone
+ Wright Aeronautical R-3350-57 Cyclone
+ Wright Aeronautical RC2-60 w/ Cutaway
