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Max Effort L76

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Old Nov 11, 2014 | 12:44 PM
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Default Max Effort L76

I've got a C5Z with a blower currently at 650/590... I'm wanting to go with a nasty NA setup. I've got a L76 shortblock (flat top with in & ex reliefs) as well as some fresh L92 heads laying around. I'm thinking I want to use a thinner head gasket and mill the heads for 11.5-12:1 while getting a better quench, a custom spec "max effort" torque monster cam... ide also keep my alky meth kit to get the most out of some timing (~26°) and depending on when it's out ide like to run the new MSD atomic intake manifold just unveiled at Sema.... questions-


-Would it be safe to say the stock L76 valve reliefs would be enough for such a cam?

-Is 550rwhp with a fat and flat 500rwtq curve realistic?

Last edited by FRiCK; Nov 11, 2014 at 12:53 PM.
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Old Nov 13, 2014 | 10:04 AM
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those numbers are dreaming IMO. WHy would you ditch the AnA SC?
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Old Nov 15, 2014 | 08:56 PM
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550rwhp is a stretch at best with a huge cam, 12:1, and every matching bolt on perfectly optimized. But 500 ftlbs from a 6.0 won't happen at all. You'll need to build a 402 out of it to get there, but it will still require every part to be optimized.

Jason
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Old Nov 15, 2014 | 09:14 PM
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Is 550rwhp with a fat and flat 500rwtq curve realistic?
Not even close. What you describe is a positive displacement supercharger application, not some N/A 6.0 engine build.

If you want those numbers N/A, consider a stroker of 416 or more cubes with some nice aftermarket heads.
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