cmayna:
I bet you have a hole in the bottom part of your radiator. I just recently had the same type of h20 leak in my '50 AD. The radiator shop boiled out the radiator and did a pressure test. They found a hole at the bottom and also one at the top that I had not noticed. They fixed the holes, but said they couldn't guarantee that it would not leak again because of the age of the radiator. They also said that a new core had been put in the radiator at some time. You may want to check out the new radiators @
www.classicperform.com , which are only $239. This price seems to be reasonable, since the radiator shop quoted me a price of about $400. Good Luck
Denny