I remember that. I went looking for the book, but it wasn't in the most likely spots, so after a half hour I gave up. The 382 I just figured was a typo. My daily driver at the time was a 383 RR. I looked up the 318 in a Chilton's book, and saw they had 2-4 bbls in the '58 Fury. So, King used some artist's license, and Carpenter did too. At least King didn't flip out over the changed ending, like he did over Kubrick's The Shining. Regardless, it's one of the best horror movies ever.