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Thread: 4.56 gears what RPM

  1. #1
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    4.56 gears what RPM

    So if you have 4.56 gears in a JK. What would be normal RPM's at 70 mph going down the HWY? 2800? Nothing wrong just wondering what everyone is getting.

    Thanks

    T

  2. #2
    Caught the Bug Jkjon's Avatar
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    Tire size?

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  3. #3
    Addict Brute's Avatar
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    Quote Originally Posted by Jkjon View Post
    Tire size?

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    auto or manual?...

  4. #4
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    sorry,

    Auto, 35's

  5. #5
    Knows a Thing or Two -AINOKEA-'s Avatar
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    Quote Originally Posted by Bigtmiller View Post
    sorry,

    Auto, 35's
    What year?


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  6. #6
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    2017. JK, 2 door

  7. #7
    Knows a Thing or Two -AINOKEA-'s Avatar
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    4.56 gears what RPM

    Don’t have real world experience with what you’re asking for, but this chart is pretty accurate for my setup.

    IMG_9258.JPG

    Edit: this is at 70mph

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  8. #8
    Hooked AgBass01's Avatar
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    This chart is pretty dang near spot on. I have a 12 JKU automatic and recently went to 4.56 but haven't had a chance to go up to 35s yet. Running 32s and sitting around 3k rpm at 70mph.
    Quote Originally Posted by -AINOKEA- View Post
    Don’t have real world experience with what you’re asking for, but this chart is pretty accurate for my setup.

    IMG_9258.JPG

    Edit: this is at 70mph

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  9. #9
    Nothing but a Thing jorgelrod's Avatar
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    That chart is pretty accurate, I run about 2700RPM at 70MPH on my 2014 with Auto Tranny and 35's

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