Introduced in 1954, the O-480 was a six-cylinder version of the four-cylinder O-320. This engine remained in production until 1978.

models

• GO-480-B: 270 hp (201 kW)
• GSO-480-A1A6: 340 hp (253 kW)

specifications

• Horizontally opposed, 6 cylinder, piston engine
• Air-cooled
• Displacement: 480 cubic inches  (7.9 litres)
• Bore x stroke: 5.125 x 3.875 inches
   

used by

• Aero Commander 560/680