Quick ? on how to tell one. In the process of restro-rodding my 76 *-3 (bought in 7
, which came w/ the gut less SB 400, course, launching a ton of pig iron w/ airplane gears didn't/doesn't help. ANYWAY, have a 454, from a 1970, 1 ton pickup. 4 bolt main, two piece rear seal.
Sorry, don't have any #'* off the block, but it is "blue".