i have a 1966 skylark with a new stock rebuilt 1972 350 engine. i have a new 3 core rad. new water pump, 160 t-stat, new electric fans, new heater core, new carb. i runs about 215 to 220 when driving. i tried a 180 t-stat runs same temp. with electric fan or clutch fan. you can start car warms up t-stat opens at 160 then starts up to 215 while driving. i put a mech. guage on car too. timing is at 18 degrees .any help? thanks jamie.