Anyhow, this is one heck of a discussion over such a simple deal(very interesting though)!. Now I did go through this fairly quick so I'm sure I missed some info, so please correct me if I'm wrong on some things!...
But after reading all this stuff, I keep thinking about this post at the beginning, It's a rampage with a jet.
Top end/performance overall, and reliability, are the two biggest issues.This tells me only one thing, it's definitely not a race boat or a lake racer, correct me if I'm wrong here now!.. If by chance my assumptions are correct here, the solution is here is K.I.S.S. Save awhole ton of moneyand just pickup a bone stock 454 with oval port heads, freshen it up, bolt it in and go and forget about it, there's only a 100,000 boats out there like it!....... BTW, I would re think the ditch pump deal though unless gas is super cheap where you're at or you're rich, because you will suck it up big time, and not go anywhere fast!...[/b]
OH BTW, the only difference in a boat motor is piston to wall clearance because of expansion, since the block runs cold and the pistons still heat up the block don't expand as much and pistons can get tight, a .001-.002 in the hone takes care of that, everything else is the same!..
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