Neutral balance flywheel mods for 5.9 magnum

Magnum Engine Swaps

  1. Private Idaho

    Private Idaho Well-Known Member

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    I know this has likely been covered here before, but the search function here SUCKS!!
    I have a good 130 tooth neutral balance flywheel and want to use it on my magnum engine swap.
    Can someone provide detailed info for modifying the neutral balance flywheel for use on the magnum?
    Thanks.
    P. I.
     
  2. Max1196

    Max1196 Well-Known Member

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    Last edited: Jun 24, 2022 at 7:44 AM
  3. moparmarks

    moparmarks zippindippintie FABO Gold Member

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    Have the rotating assembly rebalanced for a neutral balance wheel.
     
  4. Private Idaho

    Private Idaho Well-Known Member

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    • Agree Agree x 1
    • Professor Fate

      Professor Fate Push the button, Max...

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      • Private Idaho

        Private Idaho Well-Known Member

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      • Professor Fate

        Professor Fate Push the button, Max...

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        Yup. Comes with a full size overlay showing exactly where to mount it.
         
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        • Private Idaho

          Private Idaho Well-Known Member

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          Perfect! Going to order one now.
          Thanks Professor.
           
        • Professor Fate

          Professor Fate Push the button, Max...

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          The only word of caution that I'd offer is to check your clearances. Since it mounts on the engine side of the flywheel, make sure it doesn't rub on your inspection plate- you may have to tweek it a bit, although I didn't need to. It may be close. There's plenty of room between it and the block, though, so no issues there.
           
        • mopardug

          mopardug FABO Gold Member FABO Gold Member

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          Call Brewer's. They might be able to balance the flywheel that you have.
           
        • moparmarks

          moparmarks zippindippintie FABO Gold Member

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          Here are the factory specs. A good machine shop should be able to handle this.
          upload_2022-6-24_17-41-24.jpeg
           
        • Professor Fate

          Professor Fate Push the button, Max...

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          Isn't that for an LA 360? 5.9 Magnums are different from an LA 360 balance.
           
        • moparmarks

          moparmarks zippindippintie FABO Gold Member

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          Oh brainfart. Nevermind.
           
        • moparmarks

          moparmarks zippindippintie FABO Gold Member

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          Yes 5.9 the holes are smaller.
           
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