Re: ls 376/515
You're a long ways away from having to worry about the block failing.  There's guys running 800+rwhp on stock ls blocks. The cam will be the limiting factor in that package, it's barely using the head flow. The LS3 heads have a TON of potential and have as-cast flow numbers in BBC territory......throw a .650" lift cam in there and you're talking 600+hp easy. If you've got any lsx related questions I'd be happy to help.
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'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD
Last edited by swb85; 04-18-2008 at 04:57 PM.
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