I need help on my flowmaster muffler install

Discussion in 'General Chevy & GM Tech Questions' started by SRALinQ, Sep 17, 2009.

  1. SRALinQ

    SRALinQ New Member

    Ok guys I have a 2006 silverado with a stock 2 3/4 inch piping. I bought a flowmaster muffler with a 2 1/2 inch inlet. I cannot find a step down connector pipe anywhere. So i was trying to find out if there is something I can do to make it fit without having to weld anything. Any advice or references would be great.:eek:
  2. Z71_guy

    Z71_guy Epic Member 5+ Years 1000 Posts

    check your local auto parts store and see if they rent exhaust pipe expander for that size, or call your local exhaust shop and see if they can get you a step down
  3. drkbluZ71

    drkbluZ71 New Member

    check autozone thats when i picked up mine when i welded up my flowmaster. they should have several different id. and od. of piping.
  4. SRALinQ

    SRALinQ New Member

    yeah i checked autozone and pepboys but they dont carry a 2 3/4 to a 2 1/2 step down
  5. 2wheelmudder

    2wheelmudder Rockstar 100 Posts

    get a clamp and smash the bitch down until you cant tighten anymore
  6. Mean_Green_95

    Mean_Green_95 Epic Member 5+ Years 1000 Posts

    you can cut relief cuts into the stock pipe and squeeze it down to the 2.5" diameter.
  7. vncj96

    vncj96 Epic Member 5+ Years 1000 Posts

    Me personally I would be leary to take what the factory had set-up and make it smaller, while it is only a 1/4 of an inch it could give you more restriction and rob you of some power or MPG as it tries to take what normally flows at one diameter and now take the same amount and force it into a smaller diameter, 2 1/2 inch is pretty common maybe try and sell it on craigslist and then get the correct size.
  8. SRALinQ

    SRALinQ New Member

    I did it

    We put relief cuts into the connector pipes and it runs and sounds like a beast thanks for the info guys:party:
  9. Mean_Green_95

    Mean_Green_95 Epic Member 5+ Years 1000 Posts

    SWEET, he used my suggestion, lol. J/J guys.
  10. crash_42

    crash_42 New Member

    my adice take it to a shop and have them weld it in.. 25 bucks for them on mine

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