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Thread: mufflers that are quiet, but flow QT

  1. #1
    Join Date
    Jan 2009
    Posts
    19

    Smile mufflers that are quiet, but flow QT

    Hello, I put 5.3 in a 71 chevy truck. Looking for advice on mufflers. Flowmasters are too loud and I have Dynomax on another truck, but still too loud. This will be my work truck. It will have dual exhaust run to he back. The mufflers will be in the front /bed area, outside the frame. Do not want resonation at cruising speed. Any tips? Thanks a bunch, Alan

  2. #2
    Join Date
    Apr 2005
    Posts
    4,229
    Flo Pro

    or

    Magnaflow
    Gone, but not forgotten!

  3. #3
    Join Date
    Mar 2009
    Location
    Wichita Falls, TX
    Posts
    2,172
    I used a 22" long 5X11 oval, dual 2.5"in/out magnaflow, very quiet until wide open throttle but still wasn't too loud. I really like it.
    2005 black Yukon XL SLT - traded in for me wife's new Fusion (GM sucks these days)
    2002 black Yukon SLT (the skinny sister)
    1969 green Pontiac GTO (Layla, AKA the black sheep)

    INSTALLS AND MORE.. http://www.ls1truck.com/forums/my-ga...-low-life.html
    Sticky/broken gauges? I can help. PM me for details.

  4. #4
    Join Date
    Aug 2007
    Location
    Honeywood, Ontario
    Posts
    6,994
    I have a 22" Magnaflow single 3" in and out sounds good, but still quiet
    2006 Silverado
    Little Black Bitch

  5. #5
    Join Date
    Jun 2007
    Location
    maine
    Posts
    1,458
    corsa has zero drone and sound amazing IMO, but they are huge, i will never buy another brand of muffler as long as i live.
    09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,

  6. #6
    Join Date
    Jan 2008
    Posts
    8,031
    where can i get a corsa muffler?

  7. #7
    Join Date
    Mar 2006
    Location
    Mesquite
    Posts
    8,176
    Borla ProXS...I promise you'll love it.

  8. #8
    Join Date
    May 2008
    Location
    Round Rock, TX
    Posts
    3,069
    My Dual 10" magnaflows are LOUD

  9. #9
    Join Date
    Sep 2005
    Location
    Ft. Worth, Tx
    Posts
    114
    I had two 22" magnaflows 3" in an out and they weren't too bad. The 10" magnaflows were really loud.
    90 GMC RCSB Forged 370 and Built 4L80E from the VHO going in slowly but surely

    89 fox body notch... No motor or tranny mod but a narrowed 9" w/ 35 spline axles and a spool!!

    2011 Tundra CM 4x4...

  10. #10
    Join Date
    Jan 2005
    Location
    Humble/Houston TX
    Posts
    2,586
    yep. sounds like you need the biggest magnaflow made.

    old mod list: H/C/I/N/E/G 408
    new mod list: 5.3, gears/posi, mufler and tune : (

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