Outdrive swap different gear ratio and prop

pmill

Cadet
Joined
Sep 9, 2013
Messages
14
The info I'm finding on this topic is all recommendations for V8 owners using outdrives geared for smaller engines. I'm trying to go the other way.

I just bought an alpha one gen 1 upper/lower + prop because it was too good for the price to pass up even if I can't use it. I'd really like to replace the old leaky corroded alpha one/mr drive I have now with this one. My current engine Merc 470 calls for 1.84 gears, this new drive is stamped 1.47. Is there a prop I can get that will work or is this lower ratio too much for the engine?

Thanks
 
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