The V6 engines do run very hot, the water is normally steaming when it comes out. The tell tale will pulse when its not hot. Did any warning horns go off when it was running?. Before you start looking at head gaskets, have a look at the thermostats make sure they are opening up. The V6 engines can get alot of salt build up in the thermostat housings causing them to stick if it has'nt been flushed with fresh water.