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Discussion Starter #1
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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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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