GM Said No 455s in the 442 — Oldsmobile and Hurst Built 900 of Them Anyway in 1969 by Jack Harmon Oldsmobile wasn’t allowed to put its 455 V8 in a 1969 4-4-2 — GM’s own corporate rule capped intermediate engines at 400 cubic inches. Here’s the loophole that let roughly 900 buyers get one anyway, badged as a Hurst/Olds instead.
