Army Mike,
Woah - I think I am a little late in getting your message (10 years)! By now I'll assume you get your overheating problem fixed.
To fix mine I initially had a shop take a look at it to discover the timing wad way off and there was not enough airflow through the radiator (since the 1953 235 sits a lot lower on the radiator). The shop adjusted the timing, made a spacer to get the fan closer to the radiator and put on a 6 blade flex fan. The overheating problem was better but not gone. Still I could get around except on hot days.
Then one day going to a car meet up here in Portland, I hit a bump and the flex fan "flexed" and chewed through the radiator.:-(. At this point I had to get a new radiator but I also got a water pump adaptor plate to move it up a few inches and went back to the original 4 blade fan. Now the problem is all but cured. I'm thinking i may try to make a shroud one day when there's time to eliminate the problem once and for all - but first I have a front end suspension rebuild to tighten everything up, hooking up the heater wires, getting my wipers working again....
Hope you are running smoothly and often,
Doug
