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Old Oct 1, 2012 | 12:55 AM
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Default Help with Exhaust

Gents i recently purchased a set of used LG headers for a Z06, has the full 3" x pipe. Most of the systems I see have the 2.5 over the axle pipes that mate to the x pipe. I was looking for another used set up, would the 2.5" pipe be a bottle neck? An adverse perfromance vs buying a new Z06 axle back?
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Old Oct 1, 2012 | 10:43 AM
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Originally Posted by BlackFya
Gents i recently purchased a set of used LG headers for a Z06, has the full 3" x pipe. Most of the systems I see have the 2.5 over the axle pipes that mate to the x pipe. I was looking for another used set up, would the 2.5" pipe be a bottle neck? An adverse perfromance vs buying a new Z06 axle back?
To use a 2.5" (C6) axleback you'll have to cut/weld to fit it. A stock Z06 axleback will bolt on with no changes (and no loss or gain of power). Lots of used Z06 axlebacks form $300 and up.
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Old Oct 1, 2012 | 06:01 PM
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IT is accepted that stepping down the pipe size as far back as the axle over joint will have little effect on flow. The gases have cooled sufficiently. This is why long tubes work so well, close to the engine and the gases are expanded.

I CAN OFFER NO PROOF, just what I have put together reading many articles.
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Old Oct 1, 2012 | 08:50 PM
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z06 mufflers are bottle necked at the inlet of the muffler anyway.
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Old Oct 1, 2012 | 10:50 PM
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Originally Posted by Boomer111
IT is accepted that stepping down the pipe size as far back as the axle over joint will have little effect on flow. The gases have cooled sufficiently. This is why long tubes work so well, close to the engine and the gases are expanded.

I CAN OFFER NO PROOF, just what I have put together reading many articles.
Bernoulli would concur.
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Old Oct 2, 2012 | 10:02 AM
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Stock C6 LS2 exhaust is a good example. Each muffler has a single outlet LESS THAN TWO INCHES outside diameter but delivers 400 HP.
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Old Oct 2, 2012 | 11:39 AM
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Thanks for the input fellas!!
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Old Oct 7, 2012 | 10:13 PM
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I made 651RWHP through the factory Bi mode Z06 exhaust that I have up for sale on here. Just saying. I dont think it is a restriction...
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