3.55 vs lower rears

Discussion in 'Ask An Owner Operator' started by Bearbait69, May 5, 2021.

  1. Bearbait69

    Bearbait69 Bobtail Member

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    The only # that makes sense is around .45 for the overdrive.
     
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  3. AModelCat

    AModelCat Road Train Member

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    No way you'll have a .45 OD. As far as I'm aware Eaton doesn't build a transmission with that high of top gear ratio.
     
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  4. Bearbait69

    Bearbait69 Bobtail Member

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    That’s what I have to put in the overdrive on that website for everything else to line up. I have no clue about overdrive lol
     
  5. Bearbait69

    Bearbait69 Bobtail Member

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    Nvm I was mixing up the tire sizes lol
     
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  6. Bearbait69

    Bearbait69 Bobtail Member

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    Is there a ratio between 3.36 and 3.55 that is pretty common?
     
  7. Brettj3876

    Brettj3876 Road Train Member

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    44in for tall 24.5

    42 for 24.5LP

    3.42 is a common one
     
  8. abyliks

    abyliks Road Train Member

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    Looks like that truck has 3.55s depending what size rubber it has
     
  9. Bearbait69

    Bearbait69 Bobtail Member

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    Yup and I called peterbilt and that’s what was in it stock
     
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