On the road again,
Thanks for all the information.
Most likely, based on your postings, it seems the original 235 Corvette heads were high compression heads, similar in casting/design to the 848 heads. If that is the case, one major difference would have been that the 1953 Corvette 235 head would not have had the 4 valve-cover bolt-holes that would be found in the 848 heads?
I have an 848 head that I will one day put on a 1960 261 or on a 1954 235, depending on which engine is in my Suburban. The "folklore" value of putting a 261 camshaft and a 848 head on a 235, is now a much more interesting story.
Tim