Hello again, I have another issue with my '53 3100 with a '56 235 car engine. Upon initial start up, the water temp slowly increases up to nearly 220 and pukes out some coolant before the thermostat (180*) opens up, then the water temp drops to 180* and maintains that temp. At first I thought it was a sticky thermostat so I put another new one in with the same result. It's like the thermostat housing stays relatively cool being out in the open up front with fan air blowing on it while the water inside the engine gets hot. By the time heat can radiate to the thermostat to open it, it's too late and the water inside the engine, and near the temp sending unit, is too hot. The water pump heater lines are plugged, only radiator hoses to and from engine. Does there need to be a circulating line of some sort to allow some coolant flow through the engine to equalize water temps and warm up the thermostat?
