I adjusted the valves today as if they were hydraulic, and now I am fairly certain they are not. It hardly ran afterward. So I did it over again as solids, twice actually because it just feels different than the old 216, and the result didn't seem good enough. Now it is running fine, the muffler rusted out over the winter so it sounds rough.
My belief is still that I have a 235 from 1953. I do not understand what the HAA means...
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