Im about to stroke my 454 to a 4.25 crank, depending on how much bore it needs but im guessing it will end up a 496, I was thinking of 9.0 pistons, it has the 88 heads, merlin single plane intake, holley 850 and it will be getting a pro charger with 5-7 psi. what cam should i pick?

Call Bob Mardara at Marine Kinetics in N.Y. aka "RMBuilder" here on OSO. He's the guru cam man, and he will take all the guess work out of making the correct cam selection for YOUR combination. Many here on OSO have used Bob over the years. (585) 654-8583

Call Bullet.

+1 call bob,,bullett cams are drag racers..

+1000 on the board.
I have built several Stokers, including my two newest engines.
What he charges for a custom made cam is CHUMP change.
You get it right the first time- Priceless!

yeap...Bob M. nuff said

thats what ill do. thanks guys. theres not to many marine experts up where i am unless you run stock stuff.
any ideas what kinda HP #'s i should roughly have with a 496 and 5-7psi pro charger?

with a m3,,700+ make sure you oring the cylinder's and use main and head studs and good h beam rods and je forged pistons..

its only an m1 that i have

You might want to think about aluminum heads with the Procharger.