Where do stock head gaskets fail with a procharger
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From: truckee ca
I have not replaced my stock 7.4 MPI head gaskets after my M-1 5# boost install. After 100hrs I am seeing compressions fall from all 120's to 100's in the center cylinders (3,4,5,6). I also am seeing oil back up and out of the dip stick. Are the gaskets going? 590hrs total time.




