How Much Horsepower Does A 1968 Pontiac Grand Prix Have & How Many Were Made? – SlashGear

Big cars perform best with powerful engines, and in 1968 the best way to extract power from under a car’s hood was to add cubic inches. Pontiac did just that for the final years of the second-generation Grand Prix by increasing the displacement of its 389 and 421-cubic-inch V8s. 1968 represents one of the best Pontiac Grand Prix years for a few reasons. It was the last to use General Motors’ B-body platform with a 121-inch wheelbase, had a

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