Liberty was a U.S. Army project to provide large numbers of
aircraft engines in the minimum amount of time. The engine was
designed by Packard and Hall-Scott incorporating design concepts
from both engine manufacturers.
Intended for production in 4, 6, 8 and 12 cylinder
models, only the 12 cylinder was produced in large numbers.
Liberty was not an actual manufacturer but an
engine designed and manufactured by established automobile engine