The Chevrolet Turbo-Air 6 is a flat-six air-cooled automobile engine developed by General Motors (GM) in the late 1950s for use in the rear-engined Chevrolet Corvair of the 1960s. It was used in the entire Corvair line, as well as a wide variety of other applications. The engine's use of air-cooling made it appealing to aircraft amateur builders, and small volume engine builders established a cottage industry modifying Corvair engines for aircraft.