What is a Nice Street Rear end Ratio to use?

Discussion in 'Technical' started by mrskydog, Feb 4, 2009.

  1. sierra grabber

    sierra grabber Certifiable

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    grrr, so then we would need to make a 302 adapter plate and input shaft :(
     
  2. markso125

    markso125 Member

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  3. ratio411

    ratio411 Member

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    It's a little goofy, but here's some info.

    The LT1/LT4 T56 has a traditional SBC bellhousing. So it will swap to any Chevy. It will also swap to a Ford using any kit that adapts a Chevy tranny, and using a Chevy clutch disc of the correct diameter.

    The LSx T56 is totally unique to that engine family.

    There is a Viper T56, and it is the strongest of the bunch. I am not sure, but I think it has a removeable bell.

    Then there is the aftermarket T56. It definately has a removeable bell and is built on the Viper platform. You can buy this new for an SBF. $$$!

    They make plenty of ways to adapt the tranny.
    The problem is getting it to fit a Maverick.
    The floor pan and tranny tunnel needs major surgery.:(
     
  4. Bryant

    Bryant forgot more than learned

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    the t-56 has kind of a 1/2 bell housing. you there is one for 302 fords. the gm t-56 used in the f bodys is a weak one. you want to get the one from a viper or ford cobra. those are stronger ones and the ones that you can get through the aftermarket companys.
     
  5. ratio411

    ratio411 Member

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    GM T56 trannys have weak synchros!
    They are literally made from a cardboard like material.

    I found that using synthetic Honda ATF makes them last way longer than Dexron 2.
    They don't use gear oil... they use ATF.

    I had one that ground into every gear and popped out of 3rd regularly after 40k miles. I put synthetic Honda ATF in it, along with a touch of liquid teflon, and I powershifted through another 40k miles without the issues I mentioned.:huh:
    I don't know how, but it worked. I got the tip off an F-body site way back when.

    The version with the 1/2 bell is the LSx version. It is unique and will not adapt to other engines for various reasons.
    The LTx version is normal T5 style.
     
  6. mrskydog

    mrskydog Ford Fan Living The Dream

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    And the Winner is:

    So after all the Great input, I picked up a 3:55 rear end at the Columbus Ohio Swap Meet. Thanks again Kirk :thumbs2:
     

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