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rear gear

This is a discussion on rear gear within the GTO forums, part of the Vehicle Specific category; I have a question? I was thinking about putting a 391 gear in my 04 gto a4. Is there anything ...

  1. #1
    Junior Member
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    black
    2004 pontiac gto

    rear gear

    I have a question? I was thinking about putting a 391 gear in my 04 gto a4. Is there anything else that i should do first before installing the gear. I dont want to damage my transmission or rearend? Thanks for the advice.....

  2. #2
    Smiles for 9.5 Years cammed goat's Avatar
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    Jan 2009
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    Phantom Black Metallic
    2004 GTO M6

    I don't think there is anything else. I would suggest an Eaton TrueTrak diff and a Harrop diff cover in the future. Gotta protect your investment.

  3. #3
    Junior Member
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    black
    2004 pontiac gto

    Thanks for the response...

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