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whats the right alpha ratio for my boat?

Old 07-05-2011, 01:13 AM
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Join Date: Jul 2011
Location: lima,ohio
My Boats: 241 fourwinns liberator 1986
Posts: 1
Default whats the right alpha ratio for my boat?

I have a 1986 fourwinns liberator 241 that i am currently rebuilding and would like to know if anyone knows what would be the right gear ratio for this boat. It is going to be powered by twin mercruiser 305's and weighs 3100lbs excluding engines it has the right holes for alpha drives.
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Old 07-05-2011, 09:02 AM
Join Date: Feb 2006
Location: Tallahassee, FL
My Boats: 1987 Donzi 22; 2008 Donzi 28 ZXO
Posts: 1,654

If it were me I'd get the best deal I could find and prop it accordingly. You'll probably end up with 1.5 ratio drives.

Also... don't shy away from bravos. The hole is the same, you just need to add 2 more bolt holes. I have seen some pretty smoking deals on used bravos.
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Old 07-05-2011, 09:42 AM
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Join Date: Sep 2002
Location: W.Spfld,Ma
My Boats: formula242ls 1987
Posts: 2,316

the 1.5 would be right i have a formula 242 with a 454 with the alpha 1.5 and runs fine. I run a bravo 1 four blade 22p labbed a little you should be close with this set up.

sorry reread post you have twins
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