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The Allison XV-1710-1 (V-1710-A2) was the first V-1710 engine built for the Army Air Corps, following the success of the Navy’s GV-1710-A model. The Air Corps ordered an engineering prototype in March 1932, and after initial testing by Allison, it was delivered for experimental tests to the Air Corps at Wright Field in July 1933, with the first production engine delivered in February 1935. In that same period, Allison became a division of General Motors.

The V-1710 was the only U.S. liquid-cooled production engine of World War II. Ultimately, more than 47,000 V-1710s were built in 57 different versions. During World War II, V-1710s powered various models of the Lockheed P-38, Curtiss P-40, Bell P-39 and P-63, and North American P-51 fighter aircraft. Constant development, including use of a turbocharger, increased the rated take-off power to as high as 1,715 kW (2,300 hp) following World War II.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date 1933 Country of Origin United States of America Type PROPULSION-Reciprocating & Rotary Manufacturer Allison Division, General Motors Corporation
 Physical Description Type: Reciprocating, V-type, 12 cylinders, ethylene- glycol cooled Power rating: 559 kW (750 hp) at 2,400 rpm Displacement: 28 L (1,710 cu. in.) Bore and Stroke: 140 mm (5.5 in) x 152 mm (6 in) Weight: 510.3 kg (1,125 lb) Dimensions Height 94.1 cm (37.1 in.), Width 77.7 cm (30.6 in.), Depth 238.2 cm (93.75 in.)
 Materials Steel, Paint, Aluminum, Copper, Ceramic, Rubber, Brass, Magnesium
 Inventory Number A19600126000 Credit Line Transferred from the U.S. Air Force Central Museum Data Source National Air and Space Museum Restrictions & Rights Open Access (CCO)
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