looking at a 27 magnum sport with a pair of 330hp 454's. boat has alpha outdrives. any idea what i can expect speed wise?? should i be really concerned with the 454's mounted to alpha's??? anything specific to worry about?? thank you all i appreciate the help chris

65?

http://seriousoffshore.com/forums/showthread.php?t=3355

I think 70 + or real clos ,,a buddy had a 32 Pachanga with 454 (330) on alpha drives and never had a problem ,,his boat ran 64 MPH on GPS . Since the 27 Magnum is way lighter and a little skinnier it should run the 70+ and no problem with the alpha drives !!!

Hey DREAMER,, don't forget the alphas are a tat faster then bravos !!!! Just not as strong .

I had a 93 challenger which was a 27 magnum hull stretched out a foot. The challenger was a bit heavier with the deck being defferent and the way I had the cuddy finished out and I ran a solid 67 with brovo 1's. After engine upgrades it ran 79 radar.

A friend of mine some time back had a 21 4 winns lib with a 454 - 330 HP alpha drive and he never had any troubles. Just take it a little easy on your re-entry. When I ran the bravo's I would leave them pinned and let the engines hit the rev lim. within reason. The alpha's you might just be a little careful.

Back in the day a 27 with the 330 TRS setup would run mid 60's. I never saw one with the Alpha's, but I suppose it could be a bit faster.