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Message: [QUOTE="6.0 Tech, post: 1568033, member: 23001"] That sounds like a cop out in the head gasket, seems like they may be mixing and matching gasket sets they’ve got laying around or something. Several things do seem wrong about this. First being the heads weren’t oringed originally? Seems like they’re cheaping out there, at least in the 6.0 world any engine built by a reputable builder for “aftermarket performance use” no matter how light the “performance” is comes with o ringed heads. In dealing with the guys at kill devil, it’s standard on their Cummins, 6.4, 6.0, and 7.3 engines, haven’t heard them talk much about duramax stuff, but I’d assume they would do those as well. Cheap insurance at that point. Second, loose head bolts/studs is a red flag. Had a 6.4 a few years back built by a “reputable” shop somewhere in Texas who apparently deal mainly with gas stuff, but the head bolts felt like they did the first couple torqued, and none of the 90* turns. I didn’t actually check torque, but my gun typically hits a few times and then backs them out, and I could’ve probably done these with my 3/8, then after getting the heads off looked like they prepped the deck with a chainsaw. I’d recommend having the shop check the deck surface for flatness as well, may have blown on the under side of the gasket. Third, having a machine shop who your shop trusts say there is an issue with the heads, and then choate saying there is no issue is another red flag. Fourth, paying a bunch extra for a warranty that’s only going to cover $50 per hour is bs. Hell I charge more than that to work on stuff in my driveway, and I don’t have shop overhead I have to cover. Not sure what yalls typical tech pay is, but out here $50 an hour is going to barely cover an average diesel techs hourly rate. I’d say average around here is 40-50 per hour for a decent guy. I would however read their warranty stipulations very closely prior to getting an attorney involved, as it may cover their ass in some legalese I go cross eyed reading. Fifth, I agree, a 40 hp tune should have no issue on that thing. Hell, stock 300k mile motors will live very happy at that power level, tranny? Maybe not, but motor for sure. Finally, yes, a blown head gasket with their overheat tabs not being changed over, indicating you cooked the damn thing, is an assembly issue, parts failure, etc, which should be covered under warranty. If your heat tabs were popped or discolored, or whatever they do, then I could see them saying that it was a cooling system issue, or you burned the damn thing to the ground doing an hour long burnout, or some dumb shit like that, but without those tabs showing an issue, obviously it didn’t cook. Good luck, I hope you get this resolved. This does seem to be commonplace from what I’ve heard from some others. Sent from my iPhone using Tapatalk [/QUOTE]