QUIET Exhaust
Thread Starter
Racer
Joined: Dec 2002
Posts: 322
Likes: 0
QUIET Exhaust
How much power will the stock mufflers choke with a 400+ ci motor with LT headers and x pipe/cats.
Without sacrificing any performance gain what do you guys think is the quietest aftermarket muffler?
I can't believe I'm asking this. I must be getting old.
Without sacrificing any performance gain what do you guys think is the quietest aftermarket muffler?
I can't believe I'm asking this. I must be getting old.
Race Director
Joined: Aug 2003
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From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
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Why go with an aftermarket exhaust if you are seeking quiet....just keep the stock mufflers. I don't think they are that restrictive power wise.
Another very quiet system is the Corsa Touring.
Another very quiet system is the Corsa Touring.
Racer
Joined: Aug 2006
Posts: 470
Likes: 1
From: Bellevue Nebraska
Wow! This is the first time I've ever seen any question simuliar to this on CF - most guys are trying to louden up our cars, stock it already quiet as is.
Sorry, don't have an useful advise for you here - but actually I'm kind of dumbfounded (even got the blank look on my face).
Ummm... Good Luck!
~ 5ltrEATER
Sorry, don't have an useful advise for you here - but actually I'm kind of dumbfounded (even got the blank look on my face).
Ummm... Good Luck!
~ 5ltrEATER
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
I'm with you, I kept stock because I like quiet exhaust. I did put a set of Corsa Hot Tips on it for looks though.
Never put side exhausts on my 1964 either, didn't like them that loud when I was 18 years old!
Never put side exhausts on my 1964 either, didn't like them that loud when I was 18 years old!
Last edited by Oldvetter; Oct 27, 2010 at 01:53 PM.
Racer
Joined: Aug 2010
Posts: 349
Likes: 7
From: San Diego CA
From what I have gathered, the catback is not especially restrictive.
Safety Car
Joined: Sep 2005
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From: Southeast, Tennessee
St. Jude Donor '09 thru '26
i have route 66 on my 04 6 speed convert and it's pretty tame also. in fact right after i installed them my wife and i took a ride somewhere and she remarked how quiet she thought the car was. she figured if i was changing out the system it would have the same bit of growl her hemi magnum has with the custom california exhaust system on it. i believe that mid america motorsports has a whole section of sound bites on the various exhausts they sell. it might give you a better idea of what's out there.
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Go with the stock Z06 TI's, they weigh about 25 lbs less and sound great at WOT and you can usually get a pair for $400.00
Racer
Joined: Oct 2008
Posts: 332
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From: Lees Summit Mo
I have the same set up with Corsa Touring, and they are anything but quiet. Nice and throaty under normal driving, and definitly noticable.
And they flat scream at WOT!! They may be quieter than other aftermarket exhausts but noticably louder than stock.
Le Mans Master
Joined: May 2006
Posts: 7,857
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From: Hillsboro OR
I must disagree. The OP says he has LT Headers and "X" pipe with cats...
I have the same set up with Corsa Touring, and they are anything but quiet. Nice and throaty under normal driving, and definitly noticable.
And they flat scream at WOT!! They may be quieter than other aftermarket exhausts but noticably louder than stock.
I have the same set up with Corsa Touring, and they are anything but quiet. Nice and throaty under normal driving, and definitly noticable.
And they flat scream at WOT!! They may be quieter than other aftermarket exhausts but noticably louder than stock.
Instructor
Joined: Jan 2008
Posts: 244
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From: I'll Keep My Guns , Freedom And Money. You Keep The Change. FL
To answer the OP's original question. A friends C5ZO6 w/427ci has TI's and cutouts. Pre LS7 head swap, cutouts open= 500rwhp, cutouts closed thru the TI= 475rwhp. Post LS7 head swap, Cutouts open= 572rwhp, cutouts closed thru TI= 540rwhp. The stock axleback is going to get restrictive with 400+ci making any kind of power. If you want to keep it quiet and don't mind giving up some power, go with a TI. Hope this helps.
Last edited by RamAirTA; Oct 27, 2010 at 06:33 PM.
Thread Starter
Racer
Joined: Dec 2002
Posts: 322
Likes: 0
To answer the OP's original question. A friends C5ZO6 w/427ci has TI's and cutouts. Pre LS7 head swap, cutouts open= 500rwhp, cutouts closed thru the TI= 475rwhp. Post LS7 head swap, Cutouts open= 572rwhp, cutouts closed thru TI= 540rwhp. The stock axleback is going to get restrictive with 400+ci making any kind of power. If you want to keep it quiet and don't mind giving up some power, go with a TI. Hope this helps.
I swear I read some of these responses and wonder if these people even read before posting.
So yeah 408 stroker, LT's, X pipe, high flow cats, and Borla = Freaking LOUD.
My wife hates it, scares the daughter, and pisses off the neighbors.
I have the stock TI Z06 exhaust and I'm thinking of putting those back on but I don't want to loose the HP so I'm looking for a quiet aftermarket muffler that will let me keep the HP but loose SOME of the noise. I realize it will always be loud but hopefully tone it down a bit.
Race Director
Joined: Mar 2001
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From: Whippany NJ
CI 6-7-8-9 Veteran
St. Jude Donor '08-'09
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thats the way to go for big cubed motors!
Melting Slicks
Joined: Aug 2004
Posts: 2,237
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From: Springhill FL
Another vote for Z06 Ti. I had LTs and Borla stingers on my 98 and it was loud all the time regardless of speed. Now I have LTs and the stock Ti on my Z06 and I'm loving it. Its pretty docile at idle and cruising yet still howls when you stomp the loud peddle. 
Pro
Joined: Jan 2010
Posts: 586
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From: Glendale CA
I must disagree. The OP says he has LT Headers and "X" pipe with cats...
I have the same set up with Corsa Touring, and they are anything but quiet. Nice and throaty under normal driving, and definitly noticable.
And they flat scream at WOT!! They may be quieter than other aftermarket exhausts but noticably louder than stock.
I have the same set up with Corsa Touring, and they are anything but quiet. Nice and throaty under normal driving, and definitly noticable.
And they flat scream at WOT!! They may be quieter than other aftermarket exhausts but noticably louder than stock.
A friend of mine has Dynatech longtubes, high-flows, and Corsa Touring...now I'd think, how loud would a touring be?well,,,When he revved it, I swear it was as loud (or louder
) than my B&B Bullets (stock manifolds, cats)...sounded like a European F1 car 