 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (December 2021) |
| V-3420 | |
|---|---|
| |
| Allison V-3420 Engine | |
| Type | Liquid-cooled W-24 piston engine |
| National origin | United States |
| Manufacturer | Allison Engine Company |
| First run | 1937 |
| Major applications | Fisher P-75 Eagle |
| Number built | 150[citation needed] |
| Developed from | Allison V-1710 |
The Allison V-3420 was a large experimental piston aircraft engine, designed in 1937 by the American Allison Engine Company.