You may find a difference in the crankshafts. Marine engines have heavy
duty cranks, main bearings oil pump and oil pan. This is because marine
engines are under constant load pushing a prop, whereas auto engines
have much less strain on them as the transmission takes strain off as it
shifts. There are a few differences in the heads too. Especially in the
emission systems. You may be better off if you order a rebuilt from a
reputable company.

I have seen a standard, automotive 350 in a boat before, and it did work
for a while. But, burned out in 2 seasons.

Capt. Frank

http://www.home.earthlink.net/~aartworks

gerald whitaker wrote:
All,

I have an '88 Bayliner Capri with a 5 liter (305ci) OMC I.O.. The engine is
dead and I would like to replace it with GM 350 crate engine,

Is the 305 block compatible with the 350 crate engine, as far as bolt on
components, heads etc?

Jerry W.