Bill,
He, shop guy, said that the difference between top and bottom tanks on mine was only about 15. That's why he said my rad was not cooling or passing enough water/coolant. I know the pump pushed the water and rad only cools it. I asked him for a 160 thermostat but he may well have put in a 180...not sure. He had told me that the difference between top and bottom should be much greater than what you said above.. ??
I read that the sending unit on the 49's were mechanical and that once over heated they needed to be replaced as a unit..gauge and sender. That was in the green Chevy shop manual...green with Yellow letters. You know the one I think...
I know that you are a very experienced guy with these so don't get me wrong...I'm not doing anything but asking as many knowledgable people as I can...but I seem to get different opinions/info. Trust me...I really appreciate all the input I get from all on SB. I will call another shop about rodding it out...thanks for that too.
