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Thread: too much interior noise
          
   
   

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  1. #1
    Don Meyer is offline Moderator Visit my Photo Gallery
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    Apr 2001
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    St Cloud
    Car Year, Make, Model: 48 GMC trk & a 66 Rolls Royce
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    532

    too much interior noise

     



    Well I finally got the 350 rebuilt & installed in Bufford( a 1948 chevy pick up,chopped ,extended doors & caddy fins on a narrowed 94 Chevy trk bed). I have 2 1/2" pipes & Dynomax turbo mufflers. This combo makes the interior too noise to carry on a conversation..........what to do?
    1. reduce the tail pipes to 2 1/4"
    2. install resonators aft of the mufflers
    3. replace w/quiter mufflers( I have no idea what would be quiter)
    Last edited by Don Meyer; 11-03-2004 at 12:52 PM.
    Don Meyer, PhD-Mech Engr(48 GMC Trk/chopped/cab extended/caddy fins & a GM converted Rolls Royce Silver Shadow).

  2. #2
    poncho62's Avatar
    poncho62 is offline CHR Member Visit my Photo Gallery
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    Feb 2004
    Location
    Hanover, Ontario, Canada
    Car Year, Make, Model: 51 Ford Pickup
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    416

    How well is your floor insulated?

    What hangers are you hanging your pipes with? If too solid, the vibration makes it a lot louder.

    Do the tailpipes go right out to the back?

  3. #3
    Don Meyer is offline Moderator Visit my Photo Gallery
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    The floor insulation is 1/2" thick thru out the cab. The carpet is also 1/2" thick. There is also dynamat thru out the cab.
    The hangers were installed at the muffler shop & include a 2" rubber hanger.
    Don Meyer, PhD-Mech Engr(48 GMC Trk/chopped/cab extended/caddy fins & a GM converted Rolls Royce Silver Shadow).

  4. #4
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    panelbeater is offline CHR Member Visit my Photo Gallery
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    Location
    brighton
    Car Year, Make, Model: 70 cutlass
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    i had those mufflers on a camaro i built and they were loud i have heard good things about flowmasters new 70 series mufflers it is the quietest one flowmaster makes.
    craftsman try to turn of the voices in there head. artists listen to them

  5. #5
    Don Meyer is offline Moderator Visit my Photo Gallery
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    Car Year, Make, Model: 48 GMC trk & a 66 Rolls Royce
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    Thanks for the advice.....does someone know of a link that test the DB's of turbo mufflers?
    Don Meyer, PhD-Mech Engr(48 GMC Trk/chopped/cab extended/caddy fins & a GM converted Rolls Royce Silver Shadow).

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