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Thread: A555 5th gear options

  1. #1
    Garrett booster
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    A555 5th gear options

    Is there any way to change the 5th gear ratio on a 555 to make it more road race friendly? Not having so much of an RPM drop would be a big help

  2. #2
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: A555 5th gear options

    You can use any 5th gear, but I think there is little variation in them. I’ve thought about having a custom 5th gear made, but even the thought of it is so expensive it causes my wallet to run, yelping, into the other room.

  3. #3
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
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    Re: A555 5th gear options

    All our transaxles have a .71 or .72 fifth gear ratio.

    The 555 has a 4th gear ratio of .94, most others are 1.04

    The only one with less drop is the 1992 523 with a .97 fourth gear.

    It's easily recognized by its 3.77 final drive ratio listed on the round tag.

    However, its a wide ratio in the lower gears with a 3.31 first gear.

    The 555 has as 3.00 first gear making it a close ratio.

    Thanks
    Randy
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  4. #4
    See me ride out of the sunset... Turbo Mopar Staff BadAssPerformance's Avatar
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    Re: A555 5th gear options

    What Road Course are you racing on where you need 5th and how high are you revving 4th?

    Here are A555 3.85:1 and 3.50:1 FDR with 225-50-15 and tires shifting at 6500

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  5. #5
    turbo addict
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    Re: A555 5th gear options


  6. #6
    Supporting Member II Turbo Mopar Contributor ajakeski's Avatar
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    Re: A555 5th gear options

    Libertys Gears mad a higher ratio fifth gear.

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