The cooling system for the Chevrolet 350 engine consists of a water pump, a radiator and a thermostat. It is of vital importance that the cooling system work properly, as a cooling problem can lead not only to an engine which overheats, but also to more serious problems such as a damaged head gasket or a cracked cylinder block. Fortunately, the vast majority of problems associated with this cooling system can be quickly identified.
Inspect the metal fins on the front of the radiator for clogs, which are typically caused by insects. Pull any insects out of the fins with tweezers. Severe clogging will prevent air from passing through the radiator and cooling the antifreeze, resulting in overheating.