No, "Nailhead" is not the guy on the movie poster for Clive Barker's "Hellraiser" — that's Pinhead. The name "Nailhead" is a direct result of Buick trying to make a V8 as slim as possible. Buick's 322 ...
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.