 All 1959 Pontiac engines were equipped with a 389-cubic-inch engine with horsepower ratings from 215 hp economy engine to a conservative rated 345 hp Tri power carbureted engine.All automatics were four-speed Super-Hydra-Matics or, as Hydramatic Division that designed and built them called them, "Controlled coupling HydraMatic".Oldsmobile used this same transmission and called it Jetaway HydraMatic; Cadillac also used it, and called it 315 or P 315 Hydramatic.