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Best Sounding Muffler with Duals

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Old May 16, 2006 | 12:12 PM
  #1  
Iroc Adio's Avatar
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From: New Bedford, Ma
Car: 1987 IROC
Engine: Destroked 377
Transmission: TH-400
Axle/Gears: 9inch with 3.70's
Best Sounding Muffler with Duals

Im undecided on which muffler I want to run on my car. I have hooker LTs to straight piping to 2 mufflers. The exhaust is going to be 3". I was thinking about using 40 series Delta Force Race mufflers but they sound a little weird. I was also looking at Dynomax Ulta Flow mufflers. Anyone have duals with a good sounding muffler? Let me know thanks.
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Old May 16, 2006 | 12:18 PM
  #2  
urbanhunter44's Avatar
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From: Brighton, CO
Car: '72 Chevy Nova
Engine: Solid roller 355
Transmission: TH350
Axle/Gears: 8.5" 10-bolt 3.73 Posi
The dynomax mufflers are really quiet, imo. The 40s series are a bit louder definetly.

I'd just put bullets on it and dump it.. or go with magnaflow mufflers.
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Old May 16, 2006 | 09:01 PM
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From: old bridge new jersey
Car: 84 firebird
Engine: 434ci
Transmission: turbo 400 3500 stall transbrake
Axle/Gears: 10 bolt 4.10 spool'd
imo i'd put on spintech pro shootouts true bad *** sound and great flow i had them on my firebird but its now open headers for time being they will go back on soon
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Old May 16, 2006 | 09:23 PM
  #4  
Iroc Adio's Avatar
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From: New Bedford, Ma
Car: 1987 IROC
Engine: Destroked 377
Transmission: TH-400
Axle/Gears: 9inch with 3.70's
Yea i heard spintechs are nice. I need good mufflers for my new motor. 383 with about 490 horse. Also with good ground clearance.
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Old May 16, 2006 | 09:44 PM
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Street Lethal's Avatar
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From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Originally Posted by 383firebird84
imo i'd put on spintech pro shootouts true bad *** sound and great flow i had them on my firebird but its now open headers for time being they will go back on soon
Hmm, a fellow Old Bridge'er...
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Old May 16, 2006 | 09:45 PM
  #6  
IROCThe5.7L's Avatar
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
The couple cars are heard with true duals and 40 series flowmaster mufflers sounded BAD ***.


I also have a movie of an LS1 with dual bullets, sounds sooooooo pissed off.

Last edited by IROCThe5.7L; May 17, 2006 at 01:31 AM.
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Old May 20, 2006 | 03:54 PM
  #7  
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From: Ontario, Canada
Seriously.. SPINTECH all the way. I had headers going all the way back with a 2 3/4" HIGH-FLOW catback system and had a 40 series Flowmaster running out to 3.5" chrome pipes. It sounded ALRIGHT (it was used so it was nice n broken in) - by alright I mean it was kinda raspy at higher RPMs but it was nice at idle and wasn't too loud on the highway - nice and deep though.

But then I added the spintech - wasn't really impressed at first because it sounded pretty similar if not weaker. Then I put on 5k.. that made a HUGE difference. Once the muffler opened up it started to scream. I live in Canada so I had it sent from California to NY but it was worth the 6 hour drive and $180 dent - no questions asked.

If you're debating Spintech vs well anything - go with Spintech. It's a great design with an even greater sound and amazing flow.
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Old May 20, 2006 | 08:38 PM
  #8  
89TPI350's Avatar
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From: Maine
Car: 1989 Formula 350
Engine: L98
Transmission: 700-R4
stainless steel magnaflow
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Old May 20, 2006 | 10:15 PM
  #9  
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
i like spintech or chambered tube mufflers. i got a chambered tube on my car..single 3inch exhaust. on true duals, it would sound really awesome
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Old May 21, 2006 | 03:55 AM
  #10  
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From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Regular 2 chamber 2 1/2" Flowmaster 40 Series.
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