Merc 3.0 swap

[Rod's Bent]

Hi I'm mew to the site and in need of an answer. I have just bought a 24ft ChrisCraft, it has a good running 3.0 but it had twin 3.0's I will be useing this boat for fishing on lake Ontario. What I need to know is can I install a 5.7 mercruiser in it useing the same gimble houseing? Engine room is not an issue,more than enough in front. I just don't know if a 3.0 will be enough to get me off the lake if it starts to get rough. I will be useing an Alpha I out drive. any help will be appriciated.
Thanks
Rod

[hydrostream1]

No, you cannot use the stock inner transom shield the 3.0l used,you need v-8 transom shield assemblys inner and outer,plus the drive ratio is geared too low.I would find a complete setup at a boat junk yard,that would be the cheapest way.the later year the alpha drive setup the better.

[Capt.Insane-o]

What year is the boat/engine?

[Rod's Bent]

Thanks hydrostream1 Will I have to cut the transom to fit the V-8 Houseing? and by the way its an 83 for both engine and boat. I do appriciate the the info.