https://ssnperformance.com/4-e....xhaust-muffler-pipe-
In fact, both head gaskets were gone when it idled into the shop. The driver side gasket let go between cylinders 6 and 8, while the passenger side gave out between number 1 and number 3. Living at an approximate power level of 550rwhp for the duration of those miles makes it a fairly good run on stock head bolts. To be sure, this type of head bolt failure is common on higher-mile Duramax-powered GM’s that’ve been laced with 500rwhp programming. The Full Delete Bundle includes