motor rebuild suggestions

[howardcruzr]

I'm going to be rebuilding the motor in my boat this winter and wuold like to get some help from all you motorheads on hear.
The boat is a 1978 howard cruiser v-drive with a 454 and velvet drive. My plan is to bore the motor .030 over up the compression to about 10-1 and put new heads, intake manifold and a more aggressive cam. Wright now the boat does 54mph(gps) @5000rpm with a 11.5 x 14 steel prop. I wuold like to see over 60mph.
Future plans for the boat is a blower motor so if the heads will work well in both NA and blown that wuold be a plus. I was looking at edelbrocks aluminum rect. port marine heads, they have 2.250 stainless intake and 1.880 inconel exhuast valves
the intake runners are 315cc. I know that intake runner size is probably a little too big for now but I thought it wuold work o.k. for a blown deal.
So let me hear your combinations and or suggestions.
Thanks in advanced for any help-Billy;)

[Spotondl]

You don't say what gears you are running in your box???
You should be able to hit your 60 with stock power and the right gear/prop combo....

[bigkatboat]

Go big inches! 598, with a 240/ 250 cam @ .050". 1050, with a single plane manifold. "Nice" manifolds, dist, and oil cooler. This with a 29' gear and a 11 3/4" (15) 3 blade SS prop will run very well and cost less. Look at "DYNO- FLO" on the web, the 'import' cranks and rods are "COST EFFECTIVE" at 598", bigger will cost a lot more. Try Dart 355 heads and you will have a real "TURN KEY" deal. I suggest this for people who want less tuning, otherwise just put a 14/71 on the 598" deal and HOLD ON!

[howardcruzr]

Spoton-
I'm not positive on the gears, but I talked to Jim Wilkes about it and he figured them at 1.09.