Quote Originally Posted by saywatman View Post
If I'm not mistaken; you have to retorque the heads after you run the motor for awhile to heat it up.
BradMPH has recommended a re-torque at 300-500 miles after head gasket replacement, while the engine is warm. He suggests this assures no blown head gaskets later on. I followed his recommendation, and found it also allows you to inspect how the work is holding up, check manifold torques etc.. All in all, a bit of preventative maintenance well worth the time and effort.