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Go Back   Chevy and GMC Duramax Diesel Forum > Chevy / GMC Duramax 06-07.5 LBZ & LLY Forums > 06-07.5 LBZ & LLY Duramax Powertrain
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06-07.5 LBZ & LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

 
       

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Old 06-06-2007, 10:04 PM   eBay Motors   #1 (permalink)
Slidewide
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HP Limit of stock LBZ

Whats the resonable limit for the stock LBZ motor, for HP and Boost? I know there a lot of variables, but I was thinking the max with the factory long block, maybe an aftermarket turbo and exhaust, with a tuner, whats the most you could get out of the LBZ?
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Old 06-07-2007, 08:44 AM   eBay Motors   #2 (permalink)
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i have heard some piston failure with more then 550rwhp with the LBZ but it won't take much to hit 500rwhp(with the ppe hot et 2 you will hit in to the 490rwhp with the stock turbo and injecters)and with the 2500HD you should run in the low 13's and hit in to the high 12's and i wouldn't run more then 32 psi with the stock turbo and no more then 40 psi with the stock head studs..just my thoughts
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05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP.
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