I have a 54 chevy with 235. Awhile ago, i noticed that my radiator was leaking badly as soon as the truck warmed up. I took radiator to radiator shop and had it cleaned and there were no leaks at all. Put a new thermostat in as well. Whenever truck starts to warm up, the overflow tube starts draining all the fluid in the radiator. any ideas what could cause this? thanks!!
