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Thread: Acceptable offset between crank/trans input shaft

  1. #1
    Member MASTER JOURNEYMAN
    Join Date
    Oct 2008
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    Desoto, MO
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    Acceptable offset between crank/trans input shaft

    With all of the adapter bellhousings and plates, it seems that the crank and input shaft on the trans may not be perfectly centered with each other. That being said, what is an acceptable amount of offset between the two? If it matters, this would apply to th350/400 trans.

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
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    La.
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    I don't know what the acceptable amount is but i can guarentee you if you have as much as .005 you will have a front seal leak very quickly after the trans is installed.

    JMO

    Zip.

  3. #3
    Member MASTER JOURNEYMAN
    Join Date
    Oct 2008
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    Desoto, MO
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    Quote Originally Posted by zipper06
    I don't know what the acceptable amount is but i can guarentee you if you have as much as .005 you will have a front seal leak very quickly after the trans is installed.

    JMO

    Zip.
    Thanks zip, is it an acceptable practice to use offset dowel pins with the auto trans?

  4. #4
    Senior Member DYNO OPERATOR
    Join Date
    Apr 2008
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    504
    The dowels are to compensate for an ALIGN BORE job on the mains that moves the crank up toward the camshaft. No offset is "normal" any thing else is off.
    Bruce

  5. #5
    Senior Member MASTER BUILDER
    Join Date
    Dec 2005
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    Napier, New Zealand
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    230
    Wouldn't even go there bud. You're asking for trouble.
    It Ain't Over Til Its NOVA - 634ci of S*#t Your Pants!


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