As many of you already know, I am building a '48 chevy 2dr sedan. I have been planning to put a sb motor in it but I was wondering if a BBC motor will fit. Is there anyone who has seen a '48 with a bigblock in it or knows if one will fit.
My worry is that it may fit but there would be no way to change plugs or tighten header bolts because of clearance problems.

A nice 396 or 427 would really rock and roll my old chebby!!