Looky what I found...

[McGillicuddy]

Capt Chuck,
The hull is #147. Title states 1966. Motor suggests earlier.

Fr. Frank,
I definitely plan on sticking with this motor configuration.
I believe the motor is a 230 c.i., and the stern-drive is a MerCruiser 1-C. I think the block is essentially the same as the 250 c.i., just different bore and stroke, maybe - right? I'd like to learn more about horsepower boost. I've looked into the electronic ignition and found Pertronix 1163A is the marine kit for this Delco distributor. That sounds like a maintenance/reliability improvement. Probably burn fuel better, too.

Is the stern-drive interchangeable with modern drives and parts? Thanks.
-Gillie

[Fr. Frank]

Gille, you're right about the 230 and the 250 being nearly the same except for bore and stroke. The drive unit is not, however, compatible with modern units. But all the parts for your are still available, just mostly aftermarket. Changing over to a modern transom group and outdrive is fairly easy, as well. But with care that motor is nearly bulletproof.