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Thread: 56" omc cooling

  1. #21
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    Does anyone know where I can find a copy of the service bulletins mentioned previously?

  2. #22
    Team Member Bill Gohr's Avatar
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    Quote Originally Posted by Cubman View Post
    Does anyone know where I can find a copy of the service bulletins mentioned previously?
    Hopefully any good OMC dealer would have them, I think I may have a copy of the Memo I wrote, proividing the info to everyone in house regarding this matter, it was a big topic back then

  3. #23
    nemesis
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    Default 56" omc cooling

    If you were going to build an OMC 56ci and you were looking for max top end what combination of stock parts would you use? Block, head, crank (4 spline is OK), rods, pistons, intake, reed blocks, carbs, ignition and exhaust tuner. I have several of these motors I can use as doners. I already have a '72 65 flywheel but I will need a powerhead adaptor to go to a 15 inch, 49ci exhaust housing as the stock one is about 3/4 inch too tall. Thanks for your thoughts. Tom

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