The Scranton General Air Motors Co. made a five-cylinder radial, with three valves per cylinder, known as the AP-5 and producing 165 HP at 2,000 rpm. It was made in 1935.

-At the USNA there is information about this engine with registration number 3267/452.8.

From Appendix 9: See Moore “Three Valves” and General Air motors.

“General-Airmotors / Scranton / Moore AP5”