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Exhaust Tube size ?

Discussion in 'General Chevy & GM Tech Questions' started by death6283, Dec 14, 2010.

  1. death6283

    death6283 New Member

    im getting a new exhaust system i was wondering what i should upgrade to for a 97 suburban K1500
  2. ridick_bowen

    ridick_bowen Rockstar 100 Posts

    Get a Magnaflow and then I'll trade you for my Flowmaster original 40 series.
  3. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Nothing over 3inches... the 5.7L tend to sound horrible with more than that as well as the loss in back pressure usually results in a loss in milage as well.
  4. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    Agreed, especially if your going with duals.
  5. death6283

    death6283 New Member

    so would a 3 inch be the best or is that just the biggest you would recommend going?
  6. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Wtih duals i would go with 2 1/2in and with a single i would run with a 3in... You need to maintain some backpressure.
  7. KyleZ71

    KyleZ71 Rockstar 4 Years 500 Posts ROTM Winner

    Even if you run it after the y pipe? Like one into a muffler and out two. I don't understand decreasing from 2.75 to 2.5 inch pipes.
  8. stephan

    stephan Rockstar 4 Years 5000 Posts

    Hey Dead, Are you planning on installing headers on your burb? Now? Next year? Sometime in the next several years maybe? Exhaust systems last forever in sunny So Cal so you might want to plan ahead & size your pipes now for the headers that are in your future :) I'm just sayin... Many go with the cat back sys first & then decide a short time later that they want headers & have to redo the exhaust all over again, & it's expensive doing it that way..

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