1966 Pontiac Grand Prix

The 1966 Grand Prix received only minor appearance revisions, including a new more rounded split grille and new taillight trim. Engine offerings were largely unchanged from 1965 except that the 338 horsepower Tri Power 389 option was discontinued, leaving only the larger 421 with the three two barrel carburetor option, which was offered for the last time this year because of a new General Motors corporate policy. It was the second year of the second generation.