The Shvetsov ASh-82 (M-82) is a Soviet 14-cylinder, two-row, air-cooled radial aircraft engine developed from the Shvetsov M-62, the M-62 was the result of development of the M-25, which was a licensed version of which American engine?
Shvetsov ASh-82:  The M-62 was the result of development of the M-25, which was a licensed version of the Wright R-1820 Cyclone.
i don't know