Buick is a national treasure in American motoring history, the oldest surviving carmaker in the U.S. The luxury brand of General Motors was the financial founding father of a corporation that would ...

inefficient today to consider that GM was producing unique 455 Pontiacs, 455 Oldsmobiles, 455 Buicks, and 454 Chevrolets--four engines within 1 cubic inch of displacement--all at the same time.

Buick doesn’t usually get mentioned in the same breath as the most famous muscle-era powerplants, yet one of its engines ...