Hey, just my experience; if you've flushed the block/radiator, installed new thermostat, got new or good hoses, overheating can be caused by a bad radiator cap. check the hoses after car is warmed up; if you can squeeze them, cap is probably the problem. check the new (probably made in china) temp guage using a
candy thermometer. my 445 runs great at 190 Butch 64 Wildcat 64 LeSabre...