My dyno sheet on my blown 502ci may have you rethink that. Forced induction adds tons of torque, especially down low. Stop with the crazy talk

Please read this entire thread :

http://www.offshoreonly.com/forums/f...owerboats.html

If after reading that thread, you still want a faster boat.............sell the boat you have and buy a faster boat.

Ok. After all this reading. Sell what motors you have and order merc 1650s and 6s. That should get ya where ya wanna go. Lol. Boosted 454s will easily hit your target. Again drives would be the potential issue. I've been looking at 42s and already planning an scx upper/sc lower swap before I even consider more power.

I've been running my 468's, blown, for years now.

They made 800hp, 6 lbs of boost, non intercooled, ported dart heads, 420 B&M blowers, 850 holley carbs. Just this week logged over 200 miles on them at loto. They idle all day long too.

They made 730ft lbs across the rpm band give or take a few lbs. Sure would I rather have blown 540's, you bet. But I'd still take them over a pair of run of the mill NA 540's any day.

Cubic inches is nice but new blocks, stroker cranks , and all that adds up in money. For your hp goals, the 525sc can do it with better parts. IE bigger blower, dual carbs, the right roller cams, and so on.

I've been running my 468's, blown, for years now.

They made 800hp, 6 lbs of boost, non intercooled, ported dart heads, 420 B&M blowers, 850 holley carbs. Just this week logged over 200 miles on them at loto. They idle all day long too.

They made 730ft lbs across the rpm band give or take a few lbs. Sure would I rather have blown 540's, you bet. But I'd still take them over a pair of run of the mill NA 540's any day.

Cubic inches is nice but new blocks, stroker cranks , and all that adds up in money. For your hp goals, the 525sc can do it with better parts. IE bigger blower, dual carbs, the right roller cams, and so on.

Okay, what"s the dyno numbers on the roller 575s and how fast is Mild w the 800"s and does it still wamp on that cig. Heres the new nanny

Screw repowers. What's the displacement on those puppies!! I definitely see forced induction in her future!! Lol

With my current props, I can only turn them about 5500. My engines make 760hp at 5500. The boat will run about 90 in good conditions. My 38 fever has a few things going against it for speed though . No steps, ssm iv drives suck up some power. I would venture to say if I dropped my engines in a 2000 38 lightning , with bravos and shorties, it prob be a 100mph boat.

hry mild thunder can you give me a call or txt 850 585 4583 i have a question on the 420 blowers

That is probably true but with the ssm iv drives you are not setting dead in the water needing a tow home or limping in on one drive all the time. I would give up a few mph any day for the reliability of the bigger drives. It ruins you day quick with a broken boat....
I think many people wish they had SSM drives but it is a costly change from bravos. I think that is why they are trying Bmax.s and arneson drives.
If I was ordering another new boat and could either afford big engines or SSM drives it would for sure be the drives. It is easier to repower later with the SSM drives.. That way at least you will end up with a more reliable boat...
I know there has been untold amounts of money wasted trying to beef up the bravos with less than satisfying results...