 Corvair Powerglide took the principles of the standard Chevrolet Powerglide and modified them to suit the rear-mounted powertrain location of the new Corvair.The Corvair used the Powerglide for all 10 years it was produced; from 1961 to 1963, Pontiac used a modified version of Corvair Powerglide it called 'TempesTorque' for its front-engine, rear-transaxle Tempest, LeMans and Tempest LeMans cars.Corvair Powerglide is a fully automatic, two-speed, rear wheel drive aluminum-cased automatic transmission mounted directly to the forward face of the cast iron differential housing.