ill make this quick. 37 chevy truck. New Radiator built by Superior Radiator. Thermostat/restrictor plate. Big Block Chevy with dual quads and spot on timing. Really good electric fan that is spinning in the right direction with a shroud. Stick trans. no extra coolers Gauge works properly. carbs are a little fat, but not fouling plugs. The million dollar question: Why does my junk ass hot rod get into the 215 to 220 range at normal driving speeds. Hangs out around 160-170 all day at idle. Any ideas guys? Thanks.