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Thread: exhaust size
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12-25-2012, 10:54 AM #1
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exhaust size
how do I figure out the right exhaust size? I would think that a little on the small side is better than a little too big. I have stock heads with a 60121 voodoo cam, cold air, ported MAF, 3/4 long tubes, no cats, single 3" with a Dynomax ultra flo. Is that big enough? When does everyone go to a dual exhaust set up?
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12-25-2012, 11:33 AM #2
The Wrench
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I know there are some charts on the web that tell you certain size motor equals certain size exhaust. But you really need a balance between reducing back pressure and helping the scavenging. But your setup sounds good on stock.
ASE L1 Master Certified Tech's 9C1 T56. Yeah she's got a big butt. But watch her move it.
R.I.P. Z8
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12-25-2012, 11:58 AM #3
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I think your 3" single is fine. Until you build it and do some head work I think you'll be OK.
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12-25-2012, 12:03 PM #4
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Thanks
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12-25-2012, 01:03 PM #5
Long Live the Opti
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Your 3" will be find well past any N/A LTx based motor you throw at it.
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12-25-2012, 03:08 PM #6
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Unless Fastbird get his hands on your car then you gonna need at least 5"
ASE L1 Master Certified Tech's 9C1 T56. Yeah she's got a big butt. But watch her move it.
R.I.P. Z8
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12-25-2012, 03:35 PM #7
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3" is good for damn near anything.
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12-25-2012, 07:47 PM #8
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I posted a exhaust size chart some where in this section about a month ago, search and you shall receive...
1994 Z28 383ci - Jake's 4L80 - Moser 9" [LE2 heads and LE cam - 121mph @5500DA]
1995 Corvette 350ci - ZF6 - Dana 44 [GTP heads - XE503 - RamHD]
1997 Ram 2500 - tractor motor - duel spinners - chimnie mod
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12-26-2012, 11:05 AM #9
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agreed. If your on a stock displacement motor, no matter what set up, even with a power adder, I feel like 3" is enough.
Originally Posted by NoMoneyZ
93 Trans Am. M29 6 speed & Spec Stage 3+. AS&M Headers & Corsa exhaust. OEM WS6 Ram Air. Bilstein Shocks & Eibach Pro Kit. Strange 12 Bolt w/ 3.73s. OEM C6 Brakes and a ton of suspension mods...
(Non LTX: 2015 Audi S3, 2014 GMC Sierra SLT 6.2L, 2007 Audi RS4, 1940 Buick Special)
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