[ford3]

have heads resurfaced litely, and check valve clearance, it looks like a couple of intakes are starting to burn, intakes should be black and if they start to turn tan they are starting to burn, and exhausts are supposed to tan, and if the exhaust start to turn black there starting to burn, were any of the spark plugs snow white? if so that's a clue to water leaking into the cylinder, most heating problems are caused by a bad radiator, buy or borrow an infra red heat gun, shoot it at the top of rad, it should be hot there, now try the bottom, it should be warm, if hot at the top and cold at the bottom there is no or poor circulation thru the rad