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Thread: 9 or 8" REAR END
          
   
   

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  1. 09-15-2004 11:32 AM #1
    MOJAY's Avatar
    MOJAY
    MOJAY is offline CHR Member
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    Car Year, Make, Model: 1966 MUSTANG
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    Question 9 or 8" REAR END

     



    Hi there,
    is it possible to fit a 9 inch positraction diff on an 8"casing?
    Does anyone know how to tell appart a Ford 8"from an 9" without taking it apart?
    See I bought a 66 Mustang and I was told it has a 9" rear end but I'm not quite sure how to tell them apart. I was told it replaced the stock 8".
    Thanks !
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  3. 09-15-2004 12:28 PM #2
    Bob Parmenter's Avatar
    Bob Parmenter
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    9" center section won't fit in an 8" housing.

    One quick way to tell the difference is the bottom nut on the carrier. On an 8" you can slip a long socket over it, but with the 9" the size of the pinion housing won't let you use the long socket.

    The reinforment ribbing is different too, but I don't have any pictures right now to show the difference.
    Your Uncle Bob, Senior Geezer Curmudgeon

    It's much easier to promise someone a "free" ride on the wagon than to urge them to pull it.

    Luck occurs when preparation and opportunity converge.
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  4. 09-15-2004 01:21 PM #3
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    Bob Parmenter
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    Thanks Richard,
    Now I have the pics saved!!
    Your Uncle Bob, Senior Geezer Curmudgeon

    It's much easier to promise someone a "free" ride on the wagon than to urge them to pull it.

    Luck occurs when preparation and opportunity converge.
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  5. 09-15-2004 01:22 PM #4
    MOJAY's Avatar
    MOJAY
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    thanks much for guy's help...
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