The Boeing 377 Stratocruiser was a luxurious long-range postwar airliner with four piston-driven engines. It was a civilian version of the C-97 Stratofreighter. Design and development Like the C-97, the 377 was developed towards the end of World War II by adapting an enlarged upper fuselage onto the lower fuselage and wings which were essentially the same as the B-50 Superfortress, the high-performance evolution of the B-29 Superfortress bomber. The 377 was larger and longer ranged than the Lo… (More on Stratocruiser)