Transverse muffler exhausts

Discussion in 'High Performance Modifications' started by CAMLT74, Jan 13, 2010.

  1. CAMLT74

    CAMLT74 Veteran Member

    Sep 27, 2008
    Fredericia, Denmark
    Hi. I have decided that I want a transverse muffler exhaust for my 1974 LT, mainly for the better ground clearence. The Dynomax super turbo I have now, gives absolute NO ground clearance. I have found 5 systems, but I need help to choose which one to buy. Opinions needed.

    Magnaflow 15895 $633

    Thrush 89021 $246

    Pypes SGF70 $500

    Flowmaster 17104 $446

    Waldron $410
    Last edited: Jan 14, 2010
  2. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

    Feb 26, 2004
    Bloomington, MN
    I used the Thrush system...... Did a write-up here. ---->
    I think it works/sound/fits well but the Pypes system (stainless and twice the price) should be a better performance system.

    I had a local shop cut the tail pipes at a 45* angle for the Thrush system so they would look right. No tips are needed.
  3. GoldenOne7710

    GoldenOne7710 Irrelevant Member Lifetime Gold Member

    Jun 23, 2004
    Athens, GA
    If you don't want to fork out that much money for a complete could always order the muffler ONLY and have a reputable exhaust shop fabricate the rest.

    I bought the 80 series FM muffler only and had an exhaust shop install it with 2.5" pipes from the headers back with tail pipes.....they charged me $125.

    I used the transverse muffler mainly for ground clearance issues as well. I'm thinking about maybe swapping over to the Dynomax Ultra Flo muffler.
  4. CAMLT74

    CAMLT74 Veteran Member

    Sep 27, 2008
    Fredericia, Denmark
    Golden One, you want to switch the flowmaster system out, why?
  5. 73RSZ/28

    73RSZ/28 Veteran Member

    Aug 26, 2008
    St. Peters, MO
    I have used the Flowmaster system on a prvious 73. Sound is good. Resonance is a little high in the cabin. A friend has the same system in a 68 with a high comp 302. Sounds awesome at 8000 rpm.
  6. CAMLT74

    CAMLT74 Veteran Member

    Sep 27, 2008
    Fredericia, Denmark
    GoldenOne and 73RSZ/28, do You have a soundclip of the Flowmaster system?
  7. CAMLT74

    CAMLT74 Veteran Member

    Sep 27, 2008
    Fredericia, Denmark
    I can see at the pictures in your thread, that the front pipes in the Thrush system isn't mandrelbend. I wonder how much it is going to hurt performance for the engine in my sig., if it is at all...
    Last edited: Jan 14, 2010
  8. chevyseve71

    chevyseve71 BANNED

    Jun 15, 2009
    no trying to argue but you should watch a flow master muffler get tested for cfm ratings. its about 10% better than a stock muffler.
  9. noobwrench

    noobwrench Veteran Member

    Mar 11, 2009
    Lodi/Burson California
    I have that same muffler. I got the muffler and had custom pipes installed for $300 at a local muffler shop. I had replaced a flowmaster with this muffler, and im much happier with it, more mellow at idle and sounds wicked when you get on it.
  10. BondoSpecial

    BondoSpecial Veteran Member Lifetime Gold Member

    Sep 20, 2004
    Southern Maryland
    ^did the muffler shop use stainless? The price difference for stainless vs aluminized is a big factor. I always end up cheaping out and using aluminized and then hating how it holds up a few years later

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