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Thread: mufflers...

  1. #1
    Join Date
    May 2009
    Location
    Plainfield, IL
    Posts
    2,036

    mufflers...

    I currently have a custom 3" mandrel bent catback with flowmaster 40 series si/so. It sounds good, but isn't loud enough, and doesn't have any 'backbone'. I also seemed to lose a deal of low end power, which this truck desperately needs to get the tires rolling. I don't want redneck loud (don't need the tickets) but i wouldn't mind a little pop/crackle to it. I want it louder and to sound like it has some power behind it. Normally i'm only turning 1200 rpm (only turn 1800 at 80 b/c of tires) and this setup doesn't sound right til 2-3k.

    Anyone have suggestions? I like the sound of dynomax, but they don't seem to last long. Never been a fan of magnaflow. Borla/Gibson/Corsa don't seem to be "loud" by anymeans. Was thinking maybe one of those spiral race mufflers? Glasspack would be TOO loud.

    I was thinking about an electric cut-out after the Y-pipe to have it loud when I wanted on back-roads, and quieter when in neighborhoods/high traffic areas, but I'm trying to avoid redneck loud...and i would still have the problem of it being too quiet when driving around town.

    ...also don't want to go thru hassle of installing headers, and have emission tests, so I'm keeping cats.


    THANKS
    blown transmissions are about as useful as 97% of the guys on this forum

  2. #2
    Join Date
    Nov 2005
    Location
    Katy,Tx
    Posts
    101
    LS1 Sounds - Your Comprehensive Exhaust Resource

    Here is a link with some sounds.Might find something you like.
    2005 Chevy CC, Airaid cai, Gibson cat back, Nelson tune, corvette servo, Circle D 3000 stall, Circle-D built tranny,Speed Daddy headers

  3. #3
    Join Date
    May 2009
    Location
    spruce grove, alberta
    Posts
    97
    i run a moroso spiral flow on my truck and like the sounds of it and wouldnt go back to flowmaster
    2000 GMC Sierra
    6" pro comp suspension
    3" body lift
    2.5" truxx leveling kit
    37" micky thompson mtz
    pacesetter long tubes-offroad y-pipe-no cats-morroso muffler-MSD coils and wires-flex a lite fans-air aid intake-diablo tune

  4. #4
    Join Date
    Jun 2008
    Location
    Ft worth tx
    Posts
    243
    go with a aero turbine. I run a 3535, and it's stupid loud. Kinda getting tired of it being so loud actually lol
    2004 Gmc VHO (LQ9), AEM cai, perma cool e-fans, aero turbine 3535,obx lt's,undedrive pulley w/overdrive alt pulley, lingenfelter 160 t-stat, zippy tune, taylor 10.4mm wires, tb bypass, Transgo HD-2 c, corvette servos, sonnax accumulator piston's,2600 stall,30,000 trans cooler lowered 1.5"/2", boss 313 22's on 285/45's, rollpan,shaved tailgate w/ss spoiler, painted interior, 2 solo l7 12's,custom fiberglass box,Pioneer F-900 Navi,SSS gauges,billet shiter and pedals,hid's (low's and fogs).

  5. #5
    Join Date
    May 2009
    Location
    socal
    Posts
    373
    v force or spin tech

  6. #6
    Join Date
    May 2008
    Location
    Crowder, OK
    Posts
    8,005
    I run FM Super 44s. There's a few vids further down.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  7. #7
    Join Date
    Jan 2009
    Location
    Fort Worth, TX
    Posts
    143
    ive got dual original 40 series single chamber flowmasters... watch the video in my sig to hear it... it sounds pretty good but not tooo loud.


    TIP: if you go with glass packs get atleast 24" theyre not as loud
    05 Silverado RCSB...
    LQ9, TVS 1900, 4L80e, & EFI live.


    07 Silverado VortecMAX CCSB LTZ Z-71...
    Stock... so far

    08 Cadillac Escalade 6.2 / 6.0... Wife wagon

  8. #8
    Join Date
    Jan 2009
    Location
    Fort Worth, TX
    Posts
    143
    i also have 2 glass packs FS, and a single in/ dual out 40 series flowmaster FS
    05 Silverado RCSB...
    LQ9, TVS 1900, 4L80e, & EFI live.


    07 Silverado VortecMAX CCSB LTZ Z-71...
    Stock... so far

    08 Cadillac Escalade 6.2 / 6.0... Wife wagon

  9. #9
    Join Date
    Nov 2007
    Location
    S.A. Texas
    Posts
    3,751
    i run a 14" magnaflow 4 1/2'' diesel race muffler. Plenty loud. and flows great haha
    Name: Mark,
    God created turbo lag so nitrous trucks could have a chance.


    http://www.ls1truck.com/forums/my-ga...tml#post274877

  10. #10
    Join Date
    Jul 2009
    Posts
    532
    Personally like the magnaflow idea

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