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Loudest Muffler?

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Old Nov 13, 2019 | 07:29 PM
  #1  
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Car: 1989 Formula WS6
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Loudest Muffler?

OK, so I have a custom exhaust on my Firebird:

3" mandrel-bent intermediate pipe

3" intlet, dual 2 1/2" outlet Flowmaster 40 muffler

2 1/2" tailpipes.

I'm looking for the loudest, nastiest, meanest-sounding 3" inlet, dual 2 1/2" outlet muffler to replace the Flowmaster ... it's too quiet, and I'm tired of that "Flowmaster sound".

I meed something loud enough to drown out my girlfriend when she insists on coming along and starts bitching because my dog has permanent shotgun.

I've thought about the SLP loudmouth, but I've got a lot of money in my exhaust, and would prefer to just replace the muffler.

Does anybody have any thoughts?
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Old Nov 13, 2019 | 09:39 PM
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Car: 1984 T/A
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Re: Loudest Muffler?

My friend has an 88 gta with a cammed 383 and the mufflex 4in system with a spintech muffler. The spintech comes in multiple sizes though. Significantly louder than my GMMG. It was deafening
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Old Nov 13, 2019 | 09:47 PM
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Car: 1989 Formula WS6
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Transmission: T-5
Axle/Gears: 10 Bolt; 3.42 Posi
Re: Loudest Muffler?

Originally Posted by punkmaster98
My friend has an 88 gta with a cammed 383 and the mufflex 4in system with a spintech muffler. The spintech comes in multiple sizes though. Significantly louder than my GMMG. It was deafening
Yeah, but I'm looking to simply replace the muffler in the exhaust I have. Need a 3" inlet, dual 2 1/2" outlet muffler
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Old Nov 13, 2019 | 09:49 PM
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Car: 97 Z28
Engine: 396 LT1 518whp All Motor
Transmission: 6spd
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Re: Loudest Muffler?

Remove the cats before switching muffler
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Old Nov 13, 2019 | 10:02 PM
  #5  
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From: Tulsa, OK
Car: 1989 Formula WS6
Engine: L03 305 TBI
Transmission: T-5
Axle/Gears: 10 Bolt; 3.42 Posi
Re: Loudest Muffler?

Originally Posted by GOTCHEVY
Remove the cats before switching muffler
Already done
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Old Nov 13, 2019 | 11:01 PM
  #6  
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From: Tulsa, OK
Car: 1989 Formula WS6
Engine: L03 305 TBI
Transmission: T-5
Axle/Gears: 10 Bolt; 3.42 Posi
Re: Loudest Muffler?

Originally Posted by punkmaster98
My friend has an 88 gta with a cammed 383 and the mufflex 4in system with a spintech muffler. The spintech comes in multiple sizes though. Significantly louder than my GMMG. It was deafening
Hmmmm .... looking at this chart, maybe they do make one to fit our cars. Check out ***SC

https://spintechmufflers.com/muffler...uration-chart/
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Old Nov 14, 2019 | 12:59 AM
  #7  
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From: Tulsa, OK
Car: 1989 Formula WS6
Engine: L03 305 TBI
Transmission: T-5
Axle/Gears: 10 Bolt; 3.42 Posi
Re: Loudest Muffler?

Originally Posted by punkmaster98
My friend has an 88 gta with a cammed 383 and the mufflex 4in system with a spintech muffler. The spintech comes in multiple sizes though. Significantly louder than my GMMG. It was deafening

Well Senor, it appears you are correct!


https://spintechmufflers.com/camaro-...-back-systems/
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Old Nov 14, 2019 | 09:58 AM
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: Loudest Muffler?

Hooker pretty loud also
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Old Nov 14, 2019 | 10:10 AM
  #9  
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Re: Loudest Muffler?

Um, how about NO muffler?
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Old Nov 14, 2019 | 10:10 AM
  #10  
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Car: 1989 Formula WS6
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Transmission: T-5
Axle/Gears: 10 Bolt; 3.42 Posi
Re: Loudest Muffler?

Originally Posted by dmccain
Hooker pretty loud also
The aerochamber? I found reviews from people who'd put it on their cars who said it was quieter than Flowmaster and Magnaflow
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Old Nov 14, 2019 | 11:05 AM
  #11  
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Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: Loudest Muffler?

If you don't have a better cam, 10.0 compression, better heads you can't get loud
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Old Nov 14, 2019 | 11:14 AM
  #12  
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: Loudest Muffler?

Originally Posted by Tootie Pang
Um, how about NO muffler?
This seems like the obvious choice. Albeit, the most obnoxious.
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Old Nov 14, 2019 | 11:38 AM
  #13  
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Re: Loudest Muffler?

throw a three inch electric cutout in yer system right under yer gf's seat
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Old Nov 14, 2019 | 11:46 AM
  #14  
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Car: 1991 Z28
Engine: 305 TPI
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Re: Loudest Muffler?

Originally Posted by seanof30306
The aerochamber? I found reviews from people who'd put it on their cars who said it was quieter than Flowmaster and Magnaflow
I have the Aerochamber and when you open it up it is considerably louder than flow master. But at idle it is definitely quieter and more throuty. No drone with this. Hooker also makes a Max Air muffler but not sure if the make that version to fit our cars.
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Old Nov 14, 2019 | 01:46 PM
  #15  
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Re: Loudest Muffler?

Ive heard an Aerochamber on a Camaro and it was considerably louder than my 3in Flowmaster cat delete system on mine.. but the Camaro had a cammed LS engine so maybe that's why. Vinny in your video I thought the Hooker was loud also. I like the sound. Is it a straight through design or does the blackheart have baffles?
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Old Nov 14, 2019 | 04:11 PM
  #16  
seanof30306's Avatar
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From: Tulsa, OK
Car: 1989 Formula WS6
Engine: L03 305 TBI
Transmission: T-5
Axle/Gears: 10 Bolt; 3.42 Posi
Re: Loudest Muffler?

Originally Posted by vinny R
I have the Aerochamber and when you open it up it is considerably louder than flow master. But at idle it is definitely quieter and more throuty. No drone with this. Hooker also makes a Max Air muffler but not sure if the make that version to fit our cars.
From what I've been able to see so far, it looks like the Spintech Super Pro Street 9000 is the closest to my ideal. I'll keep looking.
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Old Nov 14, 2019 | 05:08 PM
  #17  
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From: Tulsa, OK
Car: 1989 Formula WS6
Engine: L03 305 TBI
Transmission: T-5
Axle/Gears: 10 Bolt; 3.42 Posi
Re: Loudest Muffler?

Spintech is a bust.

Just got off the phone with them. The only muffler they make to mount in the factory-style transverse location is the 3000SC Split Case

https://spintechmufflers.com/300sc-split-case/

The guy (Ron), who was not very helpful, said it would be quieter than the Flowmaster 40 I currently have.

Last edited by seanof30306; Nov 14, 2019 at 07:36 PM.
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Old Nov 14, 2019 | 10:00 PM
  #18  
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Re: Loudest Muffler?

Should work for ya
https://spintechmufflers.com/y-pipe-...uffler-delete/
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Old Nov 14, 2019 | 10:11 PM
  #19  
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From: Tulsa, OK
Car: 1989 Formula WS6
Engine: L03 305 TBI
Transmission: T-5
Axle/Gears: 10 Bolt; 3.42 Posi
Re: Loudest Muffler?

Originally Posted by 2slow5.0

2slo, you may very well be a stable genius!

One of the things I've thought about is putting a single Dynomax Mini Race Bullet muffler into the intermediate pipe and having something like that fabricated. That makes it a lot easier, and cheaper!

https://www.summitracing.com/parts/wlk-24250/overview/



Last edited by seanof30306; Nov 15, 2019 at 12:27 AM.
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