Quote:
Originally Posted by Camaromax
fesler- any info on the performance end is much appreciated as I have not compiled much information on that yet. Like I said I am wanting mostly reliability and driveability. I would also like to stick with using a Duramax with mostly stock internals. I wouldn't mind taking the heads off and working on them and maybe adding thicker head gaskets to lower the compression so I can run more boost but I really do not want to get into the bottom end of this engine.
So what power level do you think would be reliable on a Stock Bottom End???
Thanks Again
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no reason to drop the compression (think it's at 17:1 or thereabouts on the new LMM's). Guys are running 40-45 psi without issue with aftermarket turbos or twins on the stock engines. Above that head studs are recommended, and the stock lower end still is fine. The stock turbo is claimed to be done by 32 psi, but on my truck 36-38 psi is faster than 32 psi even with the stock turbo.
Where the bottom end (rods usually) starts having problems is when you start running big pulse widths, lots of fuel. Twin CP3 fuel pumps and a big amount of fuel will bend the stock rods. Thing is you can run 3300-3400 pulse with stock pump, an add-on lift pump, and make enough power to put the trucks in the 11's with more air (bigger turbo or twins). Where would that put a car that's 3000 pounds lighter??????????
