Alpha 1 ratio

D

dmweyrauch

Cadet
Joined
Aug 21, 2010
Messages
12
How can I tell what gear ratio my alpha 1 is its a 5.7 engine but im thinking someone switched the out drive, Is there a way of telling wht it is.
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Alpha 1 ratio

Look on the port side of the upper gear housing. Should be stamped in the same area as the serial number.
 
J

joncrisler

Petty Officer 2nd Class
Joined
Sep 25, 2009
Messages
150
Re: Alpha 1 ratio

It is usually stamped into the metal of the drive, if I recall correctly. you will see a number like 1.5 or 1.84 or 1.32 or 2.0.
 
AZSenza

AZSenza

Chief Petty Officer
Joined
Mar 11, 2008
Messages
521
Re: Alpha 1 ratio

My problem was just the opposite, my last boat came with a 4 cylinder and the 1:87 ratio (I think) and got a 5.7 swapped in. MAN it had a holeshot! Is that the engine that came in the boat? Also, the higher ratio drives could be ordered for "High Altitudes" to improve performance.
 
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