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My boat currently has a Mercruiser 470 with 1.81 ratio and a Mercruiser 48-78122A4 21p 13 3/4" prop. It's a 21' cuddy and loaded weights about 4000 lbs. Getting on to plane in good conditions can take over 15 seconds, slow. At full throttle my rpm's are at 3800 39mph. WOT range for this...
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...
Re: Alpha One with prealpha lower? ID help
The hull is an 89 and according to previous owner came factory with 4.3L that was swapped out for a 470 when the time came. There is a preload pin and o-ring on the shaft. The anti ventilation plate is definitely more square then rounded. Is it...
This is the outdrive on my used boat I bought a few months ago. First problem I ran into that confused me was replacing the impeller in this outdrive. I bought a complete kit (Alpha one Gen 1) and the base of the impellar kit didn't quite match up with the old one. The top half and gaskets...
