[tubman]

In the later ('49 and up) cars at least, I think they had the cooling problems mostly sorted out (I'm not an expert with the earlier cars). When I finished my '51 38 years ago, it had a recored radiator and a clean block, and I've never had a problem. I was in Chicago for a car show a year or two after I finished it (drove it there from the Twin Cities). I got lost and ended up in a huge traffic jam in 95 degree weather. There were modern cars pulling over to the side of the road because they were boiling (probably a good number of them were brand "X"), while I just drove on through.

If you get and keep everything maintained the way it should be, there shouldn't be a problem.