10-11-2009, 09:46 PM
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#1
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Registered User
Join Date: Jun 2008
Location: Pelham, NH
Posts: 54
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What flowmaster muffler for a 96 Vortec
I am looking to put a flowmaster muffler on a 96 Tahoe with a Vortec motor. All the mufflers I have seen show the flow going the opposite direction I need it to since the stock muffler is DI/SO due to the factory design.
A few people have said you can mount the flowmaster in the reverse direction and it is fine.
Does anyone know if this is true?
If not then what is a decent aftermarket muffler I can mount in place of the stock exhaust to add a slight tone to it. I am not interested in going crazy loud since I plow with this truck.
Thanks!
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10-11-2009, 10:57 PM
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#2
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0_o o_0 0_o o_0
Join Date: Aug 2005
Location: St. Paul, MN
Age: 25
Posts: 4,815
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Re: What flowmaster muffler for a 96 Vortec
Flowmasters are meant to flow one way and one way ONLY. They are not reversible.
Are you wanting to keep the DI/SO configuration of the factory muffler(just replace the muffler and leave the rest of the exhaust pipe as is)?
__________________
08 HHR LS - 2.2 | 5 speed | 30 MPG 
98 K1500 Z71 - 196k | L31 | 60E | 3.73's | 3" BL | 33x12.5x15 Dick Cepek F-C II's | Dynomax Ultra Flo X DI/DO | 13 MPG
84 S15 Jimmy 2dr 4x4 - engine/tranny all rebuilt
FOR SALE! $800 PM for info/pics
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10-12-2009, 07:51 PM
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#3
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Cars & Guitars
Join Date: Jul 2006
Location: Prescott, Az
Age: 27
Posts: 1,642
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Re: What flowmaster muffler for a 96 Vortec
You'd be looking into a magnaflow or similar type muffler, they are reversible and you can run a DI/SO.
Personally, I'd take advantage of the dual pipes and run dual all the way out with an H-pipe. I am a Flowmaster guy, especially with a 350. My choice is the Super 40
Last edited by 04SilveradoMykk; 10-12-2009 at 07:54 PM.
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10-12-2009, 07:58 PM
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#4
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slowsexyside
Join Date: Sep 2007
Location: laffeyette, louisiana
Age: 20
Posts: 3,194
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Re: What flowmaster muffler for a 96 Vortec
x2 on what mykk said. although ideal would be to have all new pipes ran, true 2 inch or 2.5 inch duals into whatever mufflers you pick. i have a DI/DO magnaflow and i love it
__________________
1997 K1500 Built vortec 355
Quote:
Originally Posted by StreetFreak
A good number of parts on my truck are ziptied on, simply because bolts are too heavy
imo
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10-12-2009, 08:54 PM
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#5
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Registered User
Join Date: Mar 2006
Location: Conroe
Age: 19
Posts: 515
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Re: What flowmaster muffler for a 96 Vortec
Orrr just get some flowmaster 10 series one of their single chamber race mufflers. Always sound nice and raspy with cats!!
__________________
'94 ECSB Z71 stainless headers, x-pipe with no cats, 3" single chambers, tuned by ME, 12.9mpg 
And Goin Down...
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10-14-2009, 11:39 PM
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#6
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Registered User
Join Date: Jun 2008
Location: Pelham, NH
Posts: 54
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Re: What flowmaster muffler for a 96 Vortec
Since I am going to be plowing with this truck over the winter I am wanting to keep it pretty quiet. My 95 Tahoe is all done with true duals so the 96 is going to be staying pretty much stock.
Since the stock replacement muffler is about $85 I figured why not put something with a little tone to it. The tail pipe is going to exit out the stock location as well.
That all being said I think I am going to look into a Magnaflow.
Last edited by 94Silverado1500; 10-14-2009 at 11:40 PM.
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11-03-2009, 06:17 PM
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#7
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Registered User
Join Date: Nov 2009
Location: Texas
Posts: 5
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Re: What flowmaster muffler for a 96 Vortec
Flowmaster does make 2 different dual in single out mufflers. One is a 50 series SUV Performance for $119 or a 70 series for $132. Go with the 50! The 70 series is almost to quiet unless its dumped with a turndown. The 50 series dumped sounds cool but is not excessively loud. Hope this helps!
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11-03-2009, 07:04 PM
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#8
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Registered User
Join Date: Jul 2009
Location: Nashville Tn and Pt. Pleasant WV
Age: 18
Posts: 1,351
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Re: What flowmaster muffler for a 96 Vortec
If you want to keep it quiet with a tone, go with a Flowmaster 50.
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11-03-2009, 07:27 PM
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#9
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Registered User
Join Date: Jun 2008
Location: Pelham, NH
Posts: 54
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Re: What flowmaster muffler for a 96 Vortec
I ended up getting a Dynomax Turbo which is basically a stock replacement. Mounted it with duals in, and single out. Seems to be fine and it is quiet as a mouse.
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11-04-2009, 08:04 PM
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#10
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Registered User
Join Date: Feb 2008
Location: Overland Park, KS
Posts: 1,591
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Re: What flowmaster muffler for a 96 Vortec
I'd go with an H-pipe welded in and throw this muffler into it with duals out the back and 3" tips: http://www.summitracing.com/parts/WLK-17637/
That sounds like a Flowmaster 40, but it's stainless with a lifetime warranty and a lot cheaper.
__________________
95 Sierra C1500
TBI 305, NV3500
10-Bolt 3.42 Open
Custom open air cleaner
Single 3", Thunderbolt cat, 18" d/o Magnaflow, 3.5" tips in front of the rear passenger tire.
New rig (not pictured): 86 Silverado C10 4bbl 350
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