Compression Ignition Addict
Join Date: Dec 2008
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The 345 tune only makes 38 psi of boost? Never would have thought that.
I can hit 48-50 psi with our 310 tune. I'm not recommending it, but I do have stock head bolts. No gasket failure yet. Boost isn't so much the problem when it comes to blowing head gaskets though. Boost pressure is going to increase back pressure, which can cause the heads to lift....but high back pressure is putting you at a greater risk of floating valves and causing valve to piston contact.
If I am not mistaken, high cylinder pressure is the main cause of blown head gaskets. I could be way off on that though....
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2012 Ford F-250 Lariat CC/SB
Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights