P-39M 42-4725 before delivery to USSR, 1942
P-39M
- Production: Not specified, but fewer units were built compared to the P-39N.
- Engine: Equipped with the Allison V-1710-83 engine, producing 1,360 horsepower. This engine had six exhaust stubs on each side and increased the aircraft’s top speed at 15,000 feet.
- Propeller: Utilized the Curtiss Electric propeller.
- Reconnaissance Variant: Eight P-39Ms were converted into reconnaissance aircraft, designated as P-39M-2-BE.