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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    43FE81D0-DF45-4C09-A740-C09F329BB0D6.jpeg What would my Rpms be at this speed with say 3.36 vs the 3.55 I have. 07 379 c13 single turbo 13 speed
     
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  3. Spyro2112

    Spyro2112 Medium Load Member

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    Speed. Fuel Milage
     
    Ruthless Thanks this.
  4. 062

    062 Road Train Member

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    Google road speed calculator then fill in the blanks.
     
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  5. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Be closer to 1500
     
  6. Brettj3876

    Brettj3876 Road Train Member

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    Yeah right around 1450-1550. It's not worth it to swap unless you get it for free
     
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  7. Bearbait69

    Bearbait69 Bobtail Member

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    this is my work truck. I’m looking for what gears I want when I get a truck
     
    Bean Jr. and Brettj3876 Thank this.
  8. Bearbait69

    Bearbait69 Bobtail Member

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    How do I know my overdrive
     
  9. 062

    062 Road Train Member

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    Have to search the model number to be sure, but most modern trans have a .73 final.
     
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  10. Brettj3876

    Brettj3876 Road Train Member

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  11. Bearbait69

    Bearbait69 Bobtail Member

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    24.5
     
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