| Introduced
in 1944, the O-425 was developed for the military and was produced
through 1948. Franklin referred to this engine as the 6A6 for
aircraft and 6V6 for helicopter applications. |
|
 | 6-cylinder, horizontally-opposed, air-cooled
piston engine |
| Displacement: 425 cubic inches
(6.7 liters) |
| Bore x stroke: 4.75 x 4.0 inches |
|
