Pontiac Bonneville Tri-Power
New styling for the Pontiac brand meant a new approach to the performance market as a result. Conversely, it also meant the birth of one of the most powerful American muscle car brands. Despite a few powerful models, Pontiac’s muscle quest started in 1958 with the introduction of the Bonneville with the Tri-Power option (via Auto Evolution).
Moreover, this top-of-the-line model featured a 370 V8 engine with three two-barrel Rochester carburetors and up to 310 HP. Consequently, in late 1958, Pontiac introduced an even hotter setup with up to 330 HP designed for racers and NASCAR.