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Old 04-01-2009, 02:44 PM   #1
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3" Exhaust
SO I hope to be getting headers soon, and want to replace the exhaust at the same time.

I have most of a Magnaflow 3" catback from my 93 Z28 sitting in the garage......if I got that fabbed up, would that be too big?
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Old 04-01-2009, 03:46 PM   #2
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Re: 3" Exhaust
I am also getting ready to do a 3" cat back sytem.(Hooker headers one) I dont care if its too big,thats what I've got.I also got a new high perf. cat.I will probably do my install on Sun.
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Old 04-01-2009, 03:46 PM   #3
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Re: 3" Exhaust
are you going to Cecil Co. on Sat for drag race?
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Old 04-01-2009, 03:53 PM   #4
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Re: 3" Exhaust
I'd like to go, but am kinda busy these days. Working that day. Once the car is in better shape I plan on going.
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Old 04-01-2009, 06:10 PM   #5
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Re: 3" Exhaust
If I remember correctly due to the lack of back pressure using 3" it hurts performance more than gain? I don't think it will sound good with 3" exhaust I have not done a search on what 3" v6 exhaust sounds like. What kind of muffler are you going?
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Old 04-01-2009, 07:44 PM   #6
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Re: 3" Exhaust
Someone on here has a chart for optimal exhaust system pipe size matched with engine displacement, but I don't know who it is.

Either way, for our small displacement V6 engines, 2.5" is optimal for single exhaust and 2" for true dual. I hope to go true dual sometime in the future.
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Old 04-01-2009, 08:34 PM   #7
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Re: 3" Exhaust
Quote:
Originally Posted by Maverick H1L View Post
Someone on here has a chart for optimal exhaust system pipe size matched with engine displacement, but I don't know who it is.

Either way, for our small displacement V6 engines, 2.5" is optimal for single exhaust and 2" for true dual. I hope to go true dual sometime in the future.
This is it I think http://www.thirdgen.org/techboard/ex...-you-ever.html (More than you ever wanted to know about BACKPRESSURE...)
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Old 04-01-2009, 08:34 PM
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