Hi Tracy,I,ve been racing my 408(410)all summer long and have had no overheating problems.I run a stock 73 318 2 core rad(re-cored)with a 7 blade clutch fan,eddie alumi waterpump and add a small bottle of water-wetter(BeKool)with a 180 stat...no fan shroud.My car never goes over 180,even on the...