August 24, 201015 yr Unless the packageing specifically says not to retorque them - then you need to follow the FSM procedure which does include a retorque. Personally - I just make sure all the threads are clean/oiled and torque them to 55 instead of 47. I don't bother with a retorque and I've never had a problem. And yes I've done a few non Fel-Pro head gaskets that were supplied by customers, etc. Never had one blow. GD
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