Quote:
Originally Posted by calbert1999
I have a ProCharger installed and although the engine IAT's and all were good, engine still cracked up inside this past week. Only, took 1 1/2 months. We used all brand new top of the line accessories in the heads. Medium size custom grind 3 pin. blower CAM and still kaboom.
Word of advice; Save yourself some serious stress and stay stock or forge the engine first, then get a supercharger or figure out a way to go no more than 5psi. of boost (seems pretty useless to go that low though).
I ran 7.5psi. at 6400rpm. which is very modest (rarely hit more than 4500rpm.), and as you know centris provide boost based on RPM's. Upon inspetion so far a bent valve, now need to tear down the entire engine to figure out what went wrong. Not good at all.
Everyone believed this LS3 engine could handle <10psi. yet lot's of stories of cracked up engines. The only guys that don't have busted engines are the ones that bored them to 416ci. or 427ci. and forged the internals.
I thought I could have things done well below the 10psi. and wait until next spring to have engine stroked and forged.
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Damn, I hate to hear that; silver lining is you get to rebuild now and make more power. I know those are hollow thoughts at present, but hope you get it put back together sooner rather than later.