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Gear ratio change

Discussion in '1st Gen. Tacomas (1995-2004)' started by calebdnehus, Mar 31, 2012.

  1. Mar 31, 2012 at 7:43 AM
    #1
    calebdnehus

    calebdnehus [OP] Well-Known Member

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    I have a 1998 Tacoma prerunner 3.4L with a 3 inch suspension lift on it and I was thinking of changing my rear end gear ratio from 4.10's to 3.73's or something that would get me better mpg's because all I tow is my ATV. What ratio do you guys think would still have decent power but also offer better mpg's?
     
  2. Mar 31, 2012 at 7:52 AM
    #2
    theduck911

    theduck911 Max's Canadian Twin

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    :facepalm:

    Gearing up is not going to get you any better MPG's it will most likely make it worse.
     
  3. Mar 31, 2012 at 8:10 AM
    #3
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FlimFlubberJAM
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    4.10 gears, sliders, and lots of buttons.
    Actually....When you have larger tires, and re gear correctly, you can in fact get better MPG with the outcome.
     
  4. Mar 31, 2012 at 8:15 AM
    #4
    08pretaco

    08pretaco Almost there

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    35's and 4.56 I get 24 mpg :D so Id say I am doing pretty well

    Chris, the OP wants to go from 4.10 to 3.73 so he is not looking to recover power, he wants to loose more power (powerband shift not actual mechanical power loss)
     
  5. Mar 31, 2012 at 8:15 AM
    #5
    theduck911

    theduck911 Max's Canadian Twin

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    No doubt, if someone made 4.10s for 2nd Gens I could get relatively close to stock MPGs. He's talking about going from 4.10 to 3.73 with larger tires which doesn't make much sense (to me anyways)

    Re-gearing correctly would mean gearing down to 4:56 (or something close) would it not?
     
  6. Mar 31, 2012 at 8:17 AM
    #6
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    4.10 gears, sliders, and lots of buttons.
    You can get the 4.10's from the 2.7 powered Tacomas. The gears drop right in.


    OP, gearing down will hurt your MPG more. Also, Check this thread out to see how long it will take for modifications to pay themselves off:

    http://www.tacomaworld.com/forum/technical-chat/211582-cost-per-mile-calculator.html
     
  7. Mar 31, 2012 at 8:20 AM
    #7
    theduck911

    theduck911 Max's Canadian Twin

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    Totally forgot about that :facepalm: I've assumed it get better mileage then my 4:56 (as it would be closer to stock) but was never really are, time to do some searching :cool:
     
  8. Mar 31, 2012 at 8:21 AM
    #8
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    With 33" tires, the 4.10's will give a slightly over geard result. Your milage wouldnt be as good as stock (mathimatically), but dam close.
     
  9. Mar 31, 2012 at 1:17 PM
    #9
    calebdnehus

    calebdnehus [OP] Well-Known Member

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    Crap, I totally got that backwards then. I figured if I geared up then the motor wouldn't work as hard on the interstate. So I'm gonna stick with 31's and what would be the best ratio for those tires and offer the best mileage from my truck?
     
  10. Mar 31, 2012 at 1:20 PM
    #10
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    4.10 gears, sliders, and lots of buttons.
    Stock gears.
     
  11. Mar 31, 2012 at 1:28 PM
    #11
    calebdnehus

    calebdnehus [OP] Well-Known Member

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    I was wondering what 4.56's would do for me? I kinda like the idea of having more low end torque
     
  12. Mar 31, 2012 at 1:36 PM
    #12
    theduck911

    theduck911 Max's Canadian Twin

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    It'll kill you're Hwy mileage because you'll be really high in the Rpm range, that is if tou're running 31's
     
  13. Mar 31, 2012 at 2:04 PM
    #13
    calebdnehus

    calebdnehus [OP] Well-Known Member

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    That's what I was thinking it would it do. Would it help city mileage any? It would a plus just having the extra torque from the 4.56's even if they hurt city mileage by a little bit
     
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