Have a 350 Chev in my 49 AD pickup. It always runs hot (200deg+) especially at lower speeds. In fact now that I live in AZ if I drive for any length of time it overheats. 350 out of a 74 Camaro, no smog, TH350 trans, Erson cam, Quadrajet. Champion AL radiator with electric fan, fan is set for about 160, had std water pump, went to Hi Perf water pump w/ no change. 180 thermostat tried running w/o but no change. Timing is right, jetting is right hoses are good. It has 40 Below radiator additive and fresh coolant. Could maybe change to std fan with an adapter since the block sits low compared to the radiator but the electric moves lots of air. Any ideas?