1. dartslantsix

    dartslantsix Well-Known Member

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    I installed Mopar circle track springs using the AR Engineering hangers, installed in the top hole (lowering the car). Now I have a driveline vibration so I checked the angles.

    The pinion is too far angled up now. (I measured with no weight in the car, not sure if this helps or hurts) To get the pinion back to parallel with the trans, I need to rotate it 8 degrees down. And I'm also seeing that most people recommend an additional 2 degrees for spring wrap on acceleration. This would require a 10 degree shim.

    Here's the question: I can't seem to find 10 degree shims, only 8 degree. Is it okay to not have the pinion down 2 degrees? (this is not a drag car)

    Second question: does anyone make a 10 degree shim?

    Thanks.
     
  2. RustyRatRod

    RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

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    Is it a circle track car?
     
  3. dartslantsix

    dartslantsix Well-Known Member

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    No, handling focused 67 Barracuda.
     
  4. RustyRatRod

    RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

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    I was wondering the reason for circle track springs.
     
    • Agree Agree x 1
    • oldkimmer

      oldkimmer FABO Gold Member FABO Gold Member

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      Can u raise the tail end of the tranny. What year is ur car and what is it? Kim
       
    • dartslantsix

      dartslantsix Well-Known Member

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      67 Barracuda with an ax-15 trans and Ford 8.8 rear.
       
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