The Chevrolet Greenbrier was a series of rear engined windowed vans introduced for the 1961 model year. The Greenbrier was based on the Chevrolet Corvair, and was offered in six or eight door variants. The rear mounted engine was a 2.4L flat six until 1964, when it was englarged to a 2.7L unit. Chevrolet produced the Greenbrier until 1965.