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Diameter of Z06 catback?

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Old Aug 31, 2003 | 10:11 PM
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Hit Man X
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Default Diameter of Z06 catback?
I'd assume between 2.5-2.75...so if you know for sure please tell me.

Thanks!
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Old Sep 1, 2003 | 01:39 PM
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66ImpalaLT1
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Default Re: Diameter of Z06 catback?
2.5"
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Old Sep 2, 2003 | 05:35 PM
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Default Re: Diameter of Z06 catback?
2.5"
Excellent thanks for the info! I'd assume 2.5" duals would support a heads/cam vehicle around 375rwhp or so right?
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Old Sep 2, 2003 | 09:20 PM
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Default Re: Diameter of Z06 catback?
No problem, but I would not be satisfied with a heads/cam ls1 and 375rwhp.
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Old Sep 2, 2003 | 09:35 PM
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Default Re: Diameter of Z06 catback?
No problem, but I would not be satisfied with a heads/cam ls1 and 375rwhp.
Well, what would a full bolt on (intake, TB, MAF, LS6 intake, ASP), long tubes, x-pipe w/ high flow cats, ported LS6 heads, 220/226 114lsa .550", 1.8:1 rockers, about 10.0:1 compression, and a full tune make through a built 4L60E? Is 375rwhp too much?
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Old Sep 3, 2003 | 01:07 PM
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Default Re: Diameter of Z06 catback?
Sorry I didnt realize you had an automatic. I would expect 380-400 rwhp with that combo.

Why use 1.8:1 rockers instead of a bigger cam?

Eric
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Old Sep 3, 2003 | 02:08 PM
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Default Re: Diameter of Z06 catback?
Sorry I didnt realize you had an automatic. I would expect 380-400 rwhp with that combo.

Why use 1.8:1 rockers instead of a bigger cam?

Eric
I was thinking on the Yella Terra shaft mounted rockers for their stability and roller tips. What's the highest lift you can run on stock pistons?

Would stock rods be okay at 6300-6500rpms if a cam I choose were to rev that high? Maybe it'd be better to have it advanced to bring the power band down a bit?
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