Pratt and Whitney R4360 Radial Engine 2
https://prrt1steamlocomotivetrust.org/ - Please help fund the T-1 Trust! They are a wonderful organization, building an advanced new 4-4-4-4 T-1 steam locomotive from scratch!
Another Pratt and Whitney Radial Engine, on display at the Evergreen Aviation and Space Museum in McMinville, OR. This is one of the largest radial internal combustion engines in the world. Typically used in airplanes, like the Spruce Goose.