Thanks for the ideas on the engine. The 235 sure looks different from the 216 of the same year.

I've not gotten into one of these trannys before, but doesn't the driveshaft pass through some kind of oakie bushing that could be letting gear oil run out. It sure does leak, sitting still in the garage. How is it even possible to overfill a 3-speed tranny?
Karl

It may not be the easy way, but it is the Cowboy Way - Ranger Doug
Beware of the stories you read or tell; subtly, at night, beneath the waters of consciousness, they are altering your world. - Ben Okri
1953 Chevy 3100
1960 Volvo PV 544
1941 Chevrolet Special Deluxe