[Nuke427]

Radiator being too good doesn't have a whole lot to do with cool temperatures during cool weather. If your thermostat is fully closed, it doesn't matter how good your radiator is. As stated earlier, it depends on how much bypass flow you have. My car used to run cold in the winter also. I have a CSI thermostat that had too much bypass around the thermostat. I changed it and now I'm happy with an 88 C engine, Summer and Fall. If your engine temp is changing with the weather, you need to re evaluate your thermostat/housing setup. A cool engine will not perform as good as a warmer engine. Contrary to opinion. A hot engine with cold intake air is the best formula.