Originally Posted by chadderkdawg
If it's the original outdrive it is an Alpha 1 and would have had a 5.0 or 5.7 originally. If i put a 302 in, I would have a shop do it for sure. Do you have an estimate of cost to do that? Thanks for your info, you make me feel more confident about that motor!
No problem! Since it's the Alpha 1, that means it would have the 3.0L GM currently. I've seen a few 302's with the Alpha 1, but the GM 305 is much more common. IIRC, the bill for that 350 swap was approximately $3800, and that was probably six years ago. A 305 would be almost identical, and I assume a 302 would be about the same, though motor mounts may have to be moved for that.
I'm really a fan of that GM 3.0L, though. I think you'll be impressed how it moves that boat. Remember, the pitch of a prop can greatly influence the boat's characteristics. That I4 will happily cruise at 4,000 RPM, so I'd go for a lower pitched prop for a little more pep out of the water, especially if you plan on towing skiers or a tube.