Hi Bill,

If I were you, I would "shotgun" the whole system. New long block and
pull gimbel and drive for a rebuild.

You could likely install a 350 v-8 for less money, but a little more
fitting would be involved.

Question!

What type IO do you have, and will it stand up to a bigger engine?

Capt. Frank

Brillo wrote:

I have a 1983 Grady White Seafarer 22" IO. The engine is the old Merc
Cruiser 488. 4 cylinder 188 hp. FWC. This motor is just about done and I am
considering repowering with a Mercruiser 4.3 L V6 carburated 190 hp. Does
anyone have any experience with this job? Any problems or major pit falls I
need to watch out for? Thanks.