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diesel gear ratios?

Discussion in '1982-Present GM Diesel' started by darkshadow, Apr 15, 2005.

  1. darkshadow

    darkshadow 1 ton status

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    Dose anyone have a chart or link to a calculator for gear ratios?

    Searching doesent help too comon.

    was wondering for a 6.2/465/205/35s DD/off road burb (mud and trails)
     
  2. yunit

    yunit 1/2 ton status

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    I would say to run at least 4.10's, should be pretty good all around.

    I plan to run 4.56's with 37's and I have 6.2/700r4/241.
     
  3. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I'd say 4.10's if it's mostly for off road. If you're trying for mileage then 3.73's or even 3.42's would be better.

    4.10's would put you at 2550 rpm @ 65 mph < ~16 mpg (US gallon)
    3.73's would be 2327 rpm @ 65 mph < ~18 mpg (US gallon)
    3.42's would be 2134 rpm @ 65 mph < ~20 mpg (US gallon)

    Rene
     
  4. R72K5

    R72K5 Banned

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    lol in what thread did blueblazer62 post that quote in haha
     
  5. jarheadk5

    jarheadk5 1/2 ton status

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    Gear calculator

    This thing rocks... It'll tell you RPM in all gears at all speeds, both high and low-range.
     

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