I'm a newbie here, so please give a little slack. I have a 455 buick motor code:zf-211. The research has indicated it's a '74 motor, probably from a sedan, but i'm not sure. The rear casting reads: 455 over 1241736, stamped front(block) number :44H452241. Scrap motor, no VIN, but I would like to build it to a good set of specs for that block. Finding them so far (specs) has been friutless. A rebuild is necessary. I am shooting for 375/400 hp., and plan to put it in a small boat. A 19' Taylor to be exact, which came with a 455 Olds motor. I could also use some input from some mariners out there for what's necessary for headers and the like. Would appreciate any help here, Thanks, T.May