Allison V-1710-33 (V-1710-C15), V-12 Engine


Display Status:

This object is on display in the Boeing Aviation Hangar at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Allison V-1710-33 (V-1710-C15), V-12 Engine

Collection Item Summary:

In 1937 the Allison V-1710 became the first American engine to qualify at 1,000 horsepower for the new 150-hour military type test. The V-1710-C was also the first in the “long nose” series that provided a basis for later improved and higher powered versions. Allison designers created the long nose by extending the propeller shaft about 30 centimeters (12 inches) to maximize streamlining.

The Allison V-1710 powered most U.S. Army fighters in World War II, including the Lockheed P-38, Bell P-39 and P-63, Curtiss P-40, and early North American P-51s. The V-1710-C15 (military designation V-1710-33) powered the Curtiss P-40, P-40A, B, and C pursuit aircraft.

Collection Item Long Description:



Inventory Number


Physical Description

  • Type: Reciprocating, 12 cylinders, V-type, liquid cooled
  • Power rating: 776 kW (1,040 hp) at 2,800 rpm
  • Displacement: 28 L (1,710 cu in.)
  • Bore and Stroke: 140 mm (5.5 in.) x 152 mm (6 in.)
  • Weight (dry): 608 kg (1,340 lb)

Credit Line

Lent by Allison Division, General Motors Corporation.


Norm Gilman

Country of Origin

United States of America


Length 250.3 cm (98.54 in.), Width 74 4 cm (29.29 in.), Height 106.4 cm (41.88 in.)

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


PROPULSION-Reciprocating & Rotary