Originally Posted by ThruHull (Post 2429445)

oh, and we got two 572's from scott at dynoflo last year and the engines have run flawless at 700hp. He could build them in his closet if he wanted to as long as the run like these babies do.

Originally Posted by waterboy222 (Post 2429035)

starting to think all this is just way above my head.. I absolutely love my boat so I dont want to sell it and try to find something that will run 90 just to get that speed. Plus I could get about $33k for my boat (if i sat on it for 2 years with a for sale sign cause of this stupid market).By the time i found something that has what I wanted and for that price, itd still be a fixer upper i think..

So there is really NOTHING I can do to these motors to bump the horsepower? Maybe Ill just spend the money on rebuilding the motors and dressing them up a little and be happy with my 70mph and reliability.

Originally Posted by satisfactionII (Post 2429554)

waterboy, have you checked with Moritz/Marine Assault in Tulsa. He's close, does good work, reasonable priced and he may have something in his shop that fits your bill.

Originally Posted by 5050 (Post 2430201)

By the time you upgrade your 454s your gonna have about $7500 in parts plus machine work plus a fee for moritz to put it together if you dont know how. guessing $3500 for machine work and assembly. And you still have cast crank, stock rods.

Pistons, roller cams, roller lifters, timing chain, pushrods, gasket set, bearings, rings, square ports heads, intake, carb.
I would buy 2 crate motors and be done. Jegs has complete World 509 540hp 575ft/lbs. for $8899.
Sell your 454s.

Originally Posted by Ryan8886 (Post 2429599)

Question....

Not that it makes all THAT much difference, but he should be running a Gen V 330. I've got the same motors, in fact I think my boat was buit right after or shortly after his. I've been looking into the same project and I thought I read that the Gen V motors all came with 4 bolt mains??

Water.....do a search...there's a couple threads on here from a few years ago about hopping up the 7.4's....it IS possible. I think KAMMA posted a bunch of stuff about how to do it at a reasonable price for pretty close to 500hp.