Posted by  heavy_chevy_396 1030 days and 12 hours ago. Expert's Answer http://en.wikipedia.org/wiki/List_of_GM_transmissions 1950-1973 Powerglide - Chevrolet (also used by Pontiac ) The Powerglide is a two speed automatic transmission designed by General Motors. It was available primarily on Chevrolet automobiles from 1948 through the early