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changed gears/mph is way off

This is a discussion on changed gears/mph is way off within the Drivetrain forums, part of the LSx Technical Help Section category; Hi I installed 4.10 gears , now my mph is way off. I know the older cars you could change ...

  1. #1
    Junior Member crazycat's Avatar
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    red
    95 z28 convertible

    changed gears/mph is way off

    Hi I installed 4.10 gears , now my mph is way off. I know the older cars you could change the little gear on the transmission. this car is electronic, what is the best way to fix this. I have a 95 z28. thanks p.s I called jegs he said I would have to go to a transmission shop.....

  2. #2
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    Red
    2002 WS-6 TA

    What you can do is go to jegs or summit racing and buy a programmer and you will be able to custom tune your ocm for 4.10's.

  3. #3
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    Red
    2002 WS-6 TA

    pcm not ocm

  4. #4
    Junior Member crazycat's Avatar
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    red
    95 z28 convertible

    Ok will do. thanks....

  5. #5
    Member cobrahunter's Avatar
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    Black
    1998 Camaro Z28

    My speedo was off by about 10mph after I installed the 4.10s.

  6. #6
    Every day is a gift-enjoy preston1980's Avatar
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    Torch Red
    1999 Corvette Hardtop

    hypertech power programmer 3

    It will fix your speedo, plus give you more horsepower and much more for around 300$ on all f-body cars from 94-02
    They just plug in under your steering wheel, its easy

    WS6store.com, for all your LS1/LT1 needs, they rock

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