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  1. #1
    Registered
    My Boats:
    1968 Magnum 27
    Join Date
    Sep 2008
    Location
    Bedford & Wolfeboro, NH
    Posts
    344

    Mufflers for a 27

    looking for some suggestions . .

    My boat is way too LOUD! 4 x 4" exhaust wide open with twin 383 SBC . ..

    I don't want to add external mufflers and would prefer to retain the original backslashed tips, they just look so cool!
    So I want to add mufflers internally, I have about 12" of length that I can easily utilize.

    Suggestions of what is really effective and works well.

  2. #2
    Registered
    My Boats:
    '70 Magnum 27 Sport, '88 Donzi Minx
    Join Date
    Jan 2006
    Location
    Minneapolis
    Posts
    478
    Mario,

    Corsa makes tips with the muffler inside. Works pretty well.

    Gonna raise those drives up?


    Jeff

  3. #3
    Registered
    My Boats:
    '77 Magnum 27 Sport
    Join Date
    Jun 2005
    Location
    Stockholm, Sweden
    Posts
    108
    I'm considering these for my 383's: http://www.american-hi-tek.com/

    They can be fitted inside and you can keep your old tips.

  4. #4
    Registered
    My Boats:
    1968 Magnum 27
    Join Date
    Sep 2008
    Location
    Bedford & Wolfeboro, NH
    Posts
    344
    Jeppe,

    thanks . . I considered this company when I built my Donzi with the Ford, but working with them in Australia was a challenge. Looks like they now have a USA based sales operation.

    Wonder if the mufflers will work with EMI exhaust manifolds ? I can't afford two sets of SS manifolds!

    Jeff,
    Not likely . unless I can solve the Volvo tilt motor location. Moving my drives up will cause interference on the deck.
    I am looking at other options . . . . shortened Volvo mid section.

    Right now the focus is on the engines, w/o them I can't use the boat . . .

  5. #5
    Registered
    My Boats:
    '77 Magnum 27 Sport
    Join Date
    Jun 2005
    Location
    Stockholm, Sweden
    Posts
    108
    Quote Originally Posted by Mario L. View Post
    Jeppe,

    thanks . . I considered this company when I built my Donzi with the Ford, but working with them in Australia was a challenge. Looks like they now have a USA based sales operation.

    Wonder if the mufflers will work with EMI exhaust manifolds ? I can't afford two sets of SS manifolds!

    Jeff,
    Not likely . unless I can solve the Volvo tilt motor location. Moving my drives up will cause interference on the deck.
    I am looking at other options . . . . shortened Volvo mid section.

    Right now the focus is on the engines, w/o them I can't use the boat . . .
    Allen, the owner of Hi-Tek, ensured me they would fit on my Imco PowerFlow system with 3" risers so I'm sure they can make them fit on your EMI.

  6. #6
    JC Performance Engines Gold Member Stormrider's Avatar
    My Boats:
    2003 28 Pantera
    Join Date
    Jul 2002
    Location
    Long Island, NY
    Posts
    8,662
    GGB is back in business... call them.
    GGB Mufflers is back!
    With great power, comes great responsibility.


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