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Quietest exhaust possible for 440?
#1571191
01/30/14 02:45 PM
01/30/14 02:45 PM
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Joined: Mar 2007
Posts: 254
Opelika, AL
JRs_Charger
OP
enthusiast
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OP
enthusiast
Joined: Mar 2007
Posts: 254
Opelika, AL
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Well, I decided to start driving my 440 powered charger after a few years, and I've quickly grown tired of the obnoxious exhaust.
Currently, its running factory manifolds, a 2.5inch full length exhaust with H pipe, two 40 series flowmasters, no resonators, and original exhaust tips. And its LOUD. I measured 92 decibels inside the cabin at a 60 mph cruise last week. That's ridiculous.
I'm totally over having a loud car. I want it to be as quiet and as comfortable to cruise in as a new Charger or Ram pickup. I don't want to be heard coming from a mile away anymore, and I don't want every teen in a mustang trying to race at every redlight just because of the exhaust anymore. And I want to be able to drive the car on road trips without getting fatigued from the noise. Not to mention the car is just too damn slow to justify being so stupidly loud. I'm so over it.
So guys, any recommended setups? I'm all ears. Thanks.
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Re: Quietest exhaust possible for 440?
[Re: JRs_Charger]
#1571192
01/30/14 02:49 PM
01/30/14 02:49 PM
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Joined: Nov 2003
Posts: 10,228
Colleyville
3hundred
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 10,228
Colleyville
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1971 Imperial mufflers used to be highly touted for your purposes. Quiet without too much effect on power.
Robert
'68 Fury Convertible
'69 300 Convertible
'15 Durango 5.7 Hemi
'16 300 S Hemi
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Re: Quietest exhaust possible for 440?
[Re: JRs_Charger]
#1571193
01/30/14 02:49 PM
01/30/14 02:49 PM
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Joined: Jun 2006
Posts: 5,159
CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,159
CT
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Any decent turbo muffler should be decently quiet. The quietest though? Some old reverse flow if anyone still makes them.
Walker 21848 used to be the direct replacement for 440 cars, and very quiet. I don't think they make them any more though.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: Quietest exhaust possible for 440?
[Re: JohnRR]
#1571195
01/30/14 02:56 PM
01/30/14 02:56 PM
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Joined: Mar 2007
Posts: 254
Opelika, AL
JRs_Charger
OP
enthusiast
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OP
enthusiast
Joined: Mar 2007
Posts: 254
Opelika, AL
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Quote:
Lose the flowmasters
Also you need to be realistic , the only way that car will ever be as quiet as a new charger or ram is if it stays parked in your garage and you never start it ...
Haha, understood. Then lets say I want to get it as close as I can to them. Quiet enough at cruising speed where a conversation could be had in the cabin without yelling, or quiet enough that my ears don't ring after a 4 hour drive.
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Re: Quietest exhaust possible for 440?
[Re: JRs_Charger]
#1571196
01/30/14 03:00 PM
01/30/14 03:00 PM
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Joined: Jan 2003
Posts: 74,942
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,942
U.S.S.A.
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Quote:
Quote:
Lose the flowmasters
Also you need to be realistic , the only way that car will ever be as quiet as a new charger or ram is if it stays parked in your garage and you never start it ...
Haha, understood. Then lets say I want to get it as close as I can to them. Quiet enough at cruising speed where a conversation could be had in the cabin without yelling, or quiet enough that my ears don't ring after a 4 hour drive.
Once you quiet down the exhaust you will hear everything else it was drowning out , rattles under the dash , in the doors , the trunk , and the big one ROAD NOISE ... 
Long case Dyno max turbo muffler , a bullet glasspack type muffler as a resonator ... I'm pretty sure Accutate LTD. sells 2.5" stock looking resonator tail pipes ... and replace the H with an X pipe .
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Re: Quietest exhaust possible for 440?
[Re: JRs_Charger]
#1571204
01/30/14 10:09 PM
01/30/14 10:09 PM
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Joined: Jun 2005
Posts: 2,507
Royersford, PA
bschargerse
master
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master
Joined: Jun 2005
Posts: 2,507
Royersford, PA
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Like a previous poster said, the Walker Quiet Flow 21848 is no longer available. The replacement is a Sound FX 18230. This muffler is in the catalog for the B-Body 440 powered cars. I just picked up a pair for my Newport. They are 2.25" in/out, but they neck down inside the muffler to about 1.75". I'm not too keen on the restriction, so you may want to go with the Dynomax Hemi mufflers.
Last edited by bschargerse; 01/30/14 10:10 PM.
Brian - 1971 Dodge Challenger
"The Dodge, which was practically stock, just left the Mustang like you wouldn't believe."
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Re: Quietest exhaust possible for 440?
[Re: 3hundred]
#1571207
01/31/14 02:15 AM
01/31/14 02:15 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Quote:
1971 Imperial mufflers used to be highly touted for your purposes. Quiet without too much effect on power.
Robert
I bought some Walker Quiet Flow SS mufflers for the Convertible. They are supposed to fit a Imperial.
I am going to use them to replace the Super Turbo mufflers that came with the TTI exhaust system, but it is not going to be as easy as I thought. The Imperial sized mufflers are longer than the Super Turbo mufflers, and for them to sit up in the recessed floor pan area, the rear hanger will need to be moved back some and the in and out pipe will be shortened. I am going to weld collector flanges to the muffler outlet and tailpipe for two reasons, the pipes need to be pretty short for the longer muffler, and it will make removing the exhaust easier for transmission service.
If the weather is not too bad, and I'm not working weekends I should have it done in a few weeks. This week I'm rebuilding the Dana 60 with 3.54:1 gears. Anyone need some 4.10:1 gears 
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Re: Quietest exhaust possible for 440?
[Re: JohnRR]
#1571208
02/03/14 12:46 AM
02/03/14 12:46 AM
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Joined: Mar 2003
Posts: 9,096
Rogue River, OR
Jeremiah
master
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master
Joined: Mar 2003
Posts: 9,096
Rogue River, OR
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Quote:
Lose the flowmasters
Also you need to be realistic , the only way that car will ever be as quiet as a new charger or ram is if it stays parked in your garage and you never start it ...
Incorrect sir. My stock 66 Coronet 440 383-4 car has stock style dual exhaust with direct replacement mufflers and you can't hear it idling next to a 3G HEMI. With all of the fans, buzzing, clicking, etc. that comes from new cars my stocker sounds like a Swiss watch. To be honest I was amazed to find this out. IMO the wind noise is a bigger deal in these old cars than exhaust note if the exhaust is stock. 
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Re: Quietest exhaust possible for 440?
[Re: Jeremiah]
#1571209
02/03/14 11:42 AM
02/03/14 11:42 AM
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Joined: Jan 2003
Posts: 74,942
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,942
U.S.S.A.
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Quote:
Quote:
Lose the flowmasters
Also you need to be realistic , the only way that car will ever be as quiet as a new charger or ram is if it stays parked in your garage and you never start it ...
Incorrect sir. My stock 66 Coronet 440 383-4 car has stock style dual exhaust with direct replacement mufflers and you can't hear it idling next to a 3G HEMI. With all of the fans, buzzing, clicking, etc. that comes from new cars my stocker sounds like a Swiss watch. To be honest I was amazed to find this out. IMO the wind noise is a bigger deal in these old cars than exhaust note if the exhaust is stock.
and my followup ...
Quote:
Once you quiet down the exhaust you will hear everything else it was drowning out , rattles under the dash , in the doors , the trunk , and the big one ROAD NOISE ...
Long case Dyno max turbo muffler , a bullet glasspack type muffler as a resonator ... I'm pretty sure Accutate LTD. sells 2.5" stock looking resonator tail pipes ... and replace the H with an X pipe .
yes stock replacement, flow restricting mufflers will make it as quiet as a /6 dart
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Re: Quietest exhaust possible for 440?
[Re: JRs_Charger]
#1571211
02/03/14 09:28 PM
02/03/14 09:28 PM
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Joined: Jul 2007
Posts: 271
MO, USA
Tom Hand
enthusiast
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enthusiast
Joined: Jul 2007
Posts: 271
MO, USA
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JR, If you have a few dollars to spend and want the best of both, go to waldronexhaust.com and look at VOE/DCE mufflers.
(Forgot to add these are the ones I built; theirs look like stockers the way they are made)
Tom Hand
Last edited by Tom Hand; 02/04/14 07:37 PM.
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Re: Quietest exhaust possible for 440?
[Re: JohnRR]
#1571215
02/05/14 01:19 AM
02/05/14 01:19 AM
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Joined: Jan 2003
Posts: 8,392
Highland, MI.
Sunroofcuda
master
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master
Joined: Jan 2003
Posts: 8,392
Highland, MI.
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Quote:
Quote:
Quote:
Lose the flowmasters
Also you need to be realistic , the only way that car will ever be as quiet as a new charger or ram is if it stays parked in your garage and you never start it ...
Haha, understood. Then lets say I want to get it as close as I can to them. Quiet enough at cruising speed where a conversation could be had in the cabin without yelling, or quiet enough that my ears don't ring after a 4 hour drive.
Once you quiet down the exhaust you will hear everything else it was drowning out , rattles under the dash , in the doors , the trunk , and the big one ROAD NOISE ...
Long case Dyno max turbo muffler , a bullet glasspack type muffler as a resonator ... I'm pretty sure Accutate LTD. sells 2.5" stock looking resonator tail pipes ... and replace the H with an X pipe .
This is right on the money. Order a pair of Dynomax Super Turbo 17748's, & then run a pair of 2.5" flowpath GOOD glasspacks 18" long back next to the gas tank, then tips coming right off of them. If you need something good to run at the back of the system, let me know. I can build you some chambered or packed resonators.
No Man With A Good Car Needs To Be Justified
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Re: Quietest exhaust possible for 440?
[Re: Sunroofcuda]
#1571216
02/05/14 12:00 PM
02/05/14 12:00 PM
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Joined: Jan 2004
Posts: 4,561
Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,561
Motor City
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I have a 3-1/2" dia. 2 Chamber Flowbastards under my red Charger with an X Pipe reduced down th 3" out the back thru the stock R/T tips with the tapered (2-1/4) portion of the stock tips eliminated with no resonators & it is loud. All home built in my garage. I get more compliments all of the time while driving or at the cruise nights that it is the sweetest sounding "full" exhaust car everyone has heard. I must be getting old. To me it is too loud for as much as i drive it. I may trying adding the glass pack resonators in the tail pipes on either side of the gas tank this year.
1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.
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Re: Quietest exhaust possible for 440?
[Re: TheBlueBeast]
#1571217
02/06/14 06:10 PM
02/06/14 06:10 PM
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Joined: Oct 2003
Posts: 411
Texas
vynn3
mopar
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mopar
Joined: Oct 2003
Posts: 411
Texas
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Quote:
Throw those stupid flowmasters in the scrap heap. Buy a set of "sonic turbo" mufflers.
"Sonic Turbo" mufflers have been gone since the 80's. I know because I had them on two of my cars.
vm
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Re: Quietest exhaust possible for 440?
[Re: JRs_Charger]
#1571219
02/06/14 08:27 PM
02/06/14 08:27 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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The most worth while part and money best spent was a TTI exhaust system for my cars. Use there mufflers, super turbos. My 440 with headers and a X pipe is really quite until I put my foot into it, but it's still not loud. Personally I will always use H pipes in the future because the X pipe makes it almost too quite and sounds weird when you stand on it. Checkout this short video of my 440 smoking the tires at 30 mPH roll for second, the motor is not even loud. web page
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Re: Quietest exhaust possible for 440?
[Re: Rob C]
#1571223
03/30/14 09:10 AM
03/30/14 09:10 AM
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Joined: Feb 2005
Posts: 4,310
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,310
Prospect, PA
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Quote:
Walker has a "Quite Flow" series muffler that IS quite. Know the muffler sizes you can use and start searching Summit. Or go to Walkers web site. Glass packs behind the mufflers should not be needed or used with the right muffler.
I agree. Years ago, well before the availability of today's mufflers, I simply put stock replacement, 2 1/4" aftermarket mufflers on my Charger. It was pretty quiet. I replaced them with the DynoMax Super Turbo (17747) mufflers and it was louder, and after a short period of time, they did start to drone at certain rpms.
This was with factory exhaust manifolds, 3.23 gear and stock torque converter.
Last edited by BSB67; 03/30/14 09:44 AM.
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Re: Quietest exhaust possible for 440?
[Re: BSB67]
#1571224
03/30/14 10:00 AM
03/30/14 10:00 AM
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Joined: Jan 2003
Posts: 11,076
Berlin, N.J.
abodyjoe
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,076
Berlin, N.J.
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i went from a 2.5" flowmaster knockoff obnoxious loud system to a 3" system using a large caSE DYNOMAX SUPER TURBO MUFFLER (#17793). man was the car nice and quiet. i could talk to my passengers,hear the radio and not get a headache while driving it. still had a nice deep tone behind it too. i'm sure if you look into it they probably make a large case 2.5" muffler like it.. the 3". http://www.summitracing.com/parts/wlk-17793/overview/
It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt. www.MoparMisfits.com
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Re: Quietest exhaust possible for 440?
[Re: Challenger 1]
#1571225
03/30/14 10:03 AM
03/30/14 10:03 AM
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Joined: Jan 2003
Posts: 11,076
Berlin, N.J.
abodyjoe
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,076
Berlin, N.J.
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Quote:
The most worth while part and money best spent was a TTI exhaust system for my cars. Use there mufflers, super turbos.
My 440 with headers and a X pipe is really quite until I put my foot into it, but it's still not loud.
Personally I will always use H pipes in the future because the X pipe makes it almost too quite and sounds weird when you stand on it.
Checkout this short video of my 440 smoking the tires at 30 mPH roll for second, the motor is not even loud.
web page
aren't the tti mufflers dynomax super turbos?
by reading a bunch of posts over the years it seems that guys that used a tti kit and super turbos and used stock exhaust manifolds always complain about the dreaded drone. guys that used headers with the super turbos didn't experience that drone.
It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt. www.MoparMisfits.com
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Re: Quietest exhaust possible for 440?
[Re: JRs_Charger]
#1571226
03/30/14 10:18 AM
03/30/14 10:18 AM
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Joined: Feb 2003
Posts: 1,637
Florida
GMP440
top fuel
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top fuel
Joined: Feb 2003
Posts: 1,637
Florida
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I use stock mufflers on my 68 Coronet. Years ago I used glasspacks, turbo mufflers, etc. The mufflers that I used are the MSL mufflers. AP Exhaust makes them. They sound great. It's a stock muffler. It's not a performance muffler. It gives a period correct exhaust sound. And they are not loud at all. Very happy with them. http://www.apexhaust.com/automotive-light-truck-2/overview/ I just replaced the mufflers and pipes on my 91 Crown Vic police car. I used the Walker Sound FX mufflers. The car is a factory dual exhaust with h-pipe. These are very quiet too. Very happy with these too. Someone else mentioned about these mufflers on this thread. Give these mufflers a try. I would try the MSL's first. I think you will like them.
Last edited by GMP440; 03/30/14 10:45 AM.
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Re: Quietest exhaust possible for 440?
[Re: abodyjoe]
#1571227
03/30/14 11:03 AM
03/30/14 11:03 AM
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Joined: Feb 2005
Posts: 4,310
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,310
Prospect, PA
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Quote:
Quote:
The most worth while part and money best spent was a TTI exhaust system for my cars. Use there mufflers, super turbos.
My 440 with headers and a X pipe is really quite until I put my foot into it, but it's still not loud.
Personally I will always use H pipes in the future because the X pipe makes it almost too quite and sounds weird when you stand on it.
Checkout this short video of my 440 smoking the tires at 30 mPH roll for second, the motor is not even loud.
web page
aren't the tti mufflers dynomax super turbos?
by reading a bunch of posts over the years it seems that guys that used a tti kit and super turbos and used stock exhaust manifolds always complain about the dreaded drone. guys that used headers with the super turbos didn't experience that drone.
Yes. I believe that all of what you stated is correct. That is why I stated I had manifolds. Also, it occurs at a certain rpm and engine load. Guys with more gear and/or looser converter, or lighter car may experience less drone, and/or they will get through the drone zone earlier and faster and will be a non-issue for them.
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Re: Quietest exhaust possible for 440?
[Re: TurboMike]
#1571231
03/30/14 03:52 PM
03/30/14 03:52 PM
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Joined: Jan 2003
Posts: 8,392
Highland, MI.
Sunroofcuda
master
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master
Joined: Jan 2003
Posts: 8,392
Highland, MI.
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I'll tell you this, the Dynomax Super Turbos sound great when they are new (a little too quiet for me), but they are built with a fiberglass blanket that is wrapped around the center portion of the muffler & it will break-down pretty quickly & then the mufflers will get LOUD - VERY LOUD! Especially the 14" bodied ones, & the 3" x 16" versions. A good friend of mine has a 440-6 Challenger & bought a TTI headers-back system & went with the 3" Super Turbos - it sounded perfect when new. About 2 years later & not too many miles, the exhaust is SO loud inside the car it's not even fun to be in it for more than 15 minutes! My chambered mufflers & resonators combined would offer much better noise control than his current setup. So yes the Super Turbos do sound good, but they get loud over time. As far as the Walker Quiet Flows, they are 3-tube internals, there are no flow directors internally like Super Turbos have, plus the Quiet Flows have much smaller diameter flow tubes than the Super Turbos. A 2.5" Super Turbo will have 2.5" perf tubes internally (3 of them), while a 2.5" Quiet Flow will probably have 2" internal perf tubes plus CRF packing material - that's why they are quieter - they are a lot more restrictive.
No Man With A Good Car Needs To Be Justified
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Then get some sound reducing material and cover under the package tray, under the back seat and trunk divider. 
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