160 miles on it. it heats up and goes right past 170 degrees where the thermostat is supposed to open. the water pump had a bolt broken off in it after we put it on. i used the ls head gasket. i have no leaks. i changed the thermostat and no luck. i cant figure this out. this sucks. i just dont care anymore. i am to the point where i am going to sell the car and just take out a loan on some thing that willnever be modded.