Armstrong Siddeley Panther
The Armstrong Siddeley Panther was a 27-litre 14-cylinder twin-row air-cooled radial aero engine developed by Armstrong Siddeley. It was originally named the Jaguar Major.
Variants
;AS Panther IIIA:500 hp;AS Panther VII:638 hp at 2,400 rpm with 0.5 psi boost