Tailpipe length after muffler

Discussion in 'Exhaust and Mufflers' started by Hibbie, Mar 2, 2018.

  1. Hibbie

    Hibbie New Member

    What is the effect of the tailpipe length after the muffler? SBC with 500 hp with tri-y headers and a X pipe before a single 5" in and out muffler. Down pipe before rear housing or 4' of oval tubing exiting out the rear? Road racing car needing to meet 98 db FYI.
  2. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    Its Trial and error testing often to find the best size tail pipes after the Muffler.
    Usually in Daul exhaust systems you just run the same size tailpipes forward of the Mufflers.
  3. Indycars

    Indycars Administrator Staff Member

    Welcome to the website! Photos would be very helpful if you have some of your application.

    Is a single 5 inch muffler a requirement? Two 2-1/2 inch mufflers would have a significantly more
    flow area. You could even go to a 3 inch system and be nearly as good as open headers, just hard to
    find anyone locally that can bend that size exhaust pipe.

    Some more details would be very helpful.
  4. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    I am assuming its a 3rd Gen IROC Camaro Or a 3rd Gen Trans Am.
    Why 5" inch single exhaust in place.
    I seen a custom bent 5"inch single exhaust on a 700 HP Big Block Chevy IROC Camaro in the Race shop I worked in Chicago.

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