Introduced in 1942, the O-435 was a six-cylinder version of the four-cylinder O-290. This engine was also developed as a light tank engine during World War II.

models

•  O-435-1: 185 hp (138 kW)
• GO-435-C2: 240 hp (179 kW)
   

specifications

• Horizontally opposed, 6 cylinder, piston engine
• Air-cooled
• Displacement: 434 cubic inches (7.1 litres)
  Bore x stroke: 4.875 x 3.875 inches

used by

• Aero Commander 520
• Stinson L-5 Sentinal