check your thermostat, if it doesn't have a small hole in it (1/16 inch) for air to pass through then drill one yourself, will save you lots of time if you ever add coolant or flush the system as it will allow the air to escape instead of being trapped causing a lock in your coolant system. also buy new head bolts as the old ones have probably stretched some and new ones will torque down nicely... and for only a few dollars worth of bolts it will save you many headaches in the future, if it is a V-6 or V-8 engine do both head gaskets not just one (I made that mistake once had to rebuild the engine because of it). Good luck, Rat.