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OEM Gear Ratio Chart

Discussion in '1st Gen. Tacomas (1995-2004)' started by chris4x4, Mar 1, 2015.

  1. Aug 21, 2019 at 9:34 AM
    #101
    Guitarzan_

    Guitarzan_ Member

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    Hey everyone, noob here. My rear diff just went, was leaking oil and seized up, so I need a new one. It had B03A in it, which looks to be 4.10 gears. MY truck is a V6. I'm assuming it doesn't matter if I find the same diff that came out of a 4 cylinder auto truck? Thanks in advance!
     
  2. Feb 18, 2020 at 11:40 AM
    #102
    HardTaco03

    HardTaco03 Well-Known Member

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    So 2003 with 2.7L 5 speed 4wd code BO7A is 4.56 factory gears?
     
  3. Feb 23, 2020 at 6:25 AM
    #103
    ontarioyota

    ontarioyota Well-Known Member

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    SW Ontario, Canada
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    Blacked out badges-rims OME lift with 881's & dakar pacs, summer tires=BFG 31x10.5x15 on 93 4runner rims,winter= 265 75 16 DURATRACS on stock steelies,Flowmaster exhaust, deck plate mod, ARB front bumper
    Mine is the same (B0A7) and I believe it is 4.30 gears
     
    Last edited: Feb 27, 2020
  4. Apr 13, 2020 at 9:18 AM
    #104
    The gold standard

    The gold standard Well-Known Member

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    According to the op, 4.30 is right. My 02 2.7 manual 4x4 has the same.
     
    ontarioyota likes this.
  5. Apr 13, 2020 at 9:22 PM
    #105
    SethSA33

    SethSA33 New Member

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    I need help my axle code is A02A and I put 33’s and now I need a bigger ratio. Can’t find any though. I have a 2014 Tacoma 2wd 2.7l prerunner.

    D1C19F3C-6109-4217-8CA3-F25003317450.jpg
     
  6. Apr 13, 2020 at 9:41 PM
    #106
    The gold standard

    The gold standard Well-Known Member

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  7. May 13, 2020 at 3:56 PM
    #107
    Gilliganthecat

    Gilliganthecat New Member

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    My 2000 2.7 ext cab 4x4 manual is BO6A 3.91 and
    My 2000 2.7 ext cap prerunner auto is BO7A 4.30.
    What is the other code you showed?
     
  8. Jul 29, 2020 at 9:55 PM
    #108
    Dylwhit

    Dylwhit Well-Known Member

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    When i did my rear end I still did a manual check on the gear ratio because im a bit paranoid. Chalked the propeller shaft and the rear wheel, jacked her up on jack stands and had a buddy turn the rear wheel 10 full rotations. I counted 2.25 rotations on the propeller shaft and multiplied it by 2, which gave me a 4.5 gear ratio (4.56). You wont make it too far if you get
     
  9. Jul 29, 2020 at 9:57 PM
    #109
    Dylwhit

    Dylwhit Well-Known Member

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    You wont make it too far if you get the ratios mismatched....
     
    wilcam47 likes this.
  10. Jul 29, 2020 at 10:12 PM
    #110
    Dylwhit

    Dylwhit Well-Known Member

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    Sorry folks, I need to correct myself again because I did my rear end a year ago and had a brain fart. If you want to manually check for gear ratio you can jack the truck up, chalk the wheel and drive shaft, pop it in neutral and spin the rear wheel 10 rotations. Video the propeller shaft and count the shaft rotations (mine spun approximately 22.5 times), multiply the rotations of the shaft by two (mine was 45ish) then you divide that number by 10 ( mine was 4.5ratio).
    Good luck with the rear end.
     
    Lukass likes this.
  11. Sep 1, 2020 at 4:11 PM
    #111
    Tacoma1997White4x4

    Tacoma1997White4x4 America First

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    1997 white 4x4 auto 4cylinder Singlecab, 2001 auto rwd 2.4l single cab flatbed
    Km3’s 31’s,Lift,Sliders,rear ARB air locker,on board air, armor, hi shell
    Sorry to revive this thread but my truck says B03A

    I have an 8 according to the specs on the list, i have a 97 tacoma simgle cab 4x4 automatic


    ive heard of an 8.4, just want to make sure im 8 before ordering an arb air locker, thx
     
  12. Oct 23, 2020 at 10:29 AM
    #112
    LiftedOn35s

    LiftedOn35s HS Junior

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    I think it was mentioned farther back, but the 8.4 was just what Toyota called the E-Locker diffs. They were technically an 8 though, so it's 8 for both the e-locker and non-e-locker diffs. Correct me if I'm wrong, just what I've heard.
     
    Lukass likes this.
  13. Oct 28, 2020 at 1:08 PM
    #113
    97Tacosupreme

    97Tacosupreme Member

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    Did the 5 lugs ever come with 4.10 gears?
     
    Lukass likes this.
  14. Nov 3, 2020 at 3:32 PM
    #114
    LiftedOn35s

    LiftedOn35s HS Junior

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    Curious about something that someone might know. My parents towed a ~3500lb Grady White boat with our 2001 PreRunner Xtra Cab AT V6. I asked him how it handled (I've heard the complaints of "oh these trucks are so bad at towing you feel anything you put on the back") and he said it was pretty easy and effortless, so I was wondering what the rear end might've been in it. I want a V6 5MT Xtra cab (and I intend to tow with it at some point) and I know they're all 4.10s, but I was thinking the PreRunners might've been different being 4AT vs a 5MT.
     
  15. Mar 29, 2021 at 6:04 AM
    #115
    Taco2021LB

    Taco2021LB Well-Known Member

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  16. May 3, 2021 at 9:50 AM
    #116
    Jase

    Jase Well-Known Member

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    Local junkyard telling me that a factory 4.56 rear end never came with an E locker, only the 4.30. Is that true?
     
  17. May 3, 2021 at 12:15 PM
    #117
    Tour991

    Tour991 Supplier of used parts

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    4.10 and 4.30s only in the E-locker.
     
    808BOGEYMAN and Jase like this.
  18. May 11, 2021 at 6:39 PM
    #118
    253-Tacoma

    253-Tacoma Member

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    1996 Tacoma Base 2RZ-FE 2011 Tacoma SR5 2TR-FE 4x4
    Both De-Catted running URD 02 simulators
    3.58 base model on 14" steelies :D Does anyone know if plus sizing to maybe 225/75/15 would be too much? Would the 4AT take it even though I'd be one very slow taquito :rofl:
     
  19. Jun 5, 2021 at 6:55 AM
    #119
    Archaic2021

    Archaic2021 Well-Known Member

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    2hat if there us just a question mark on the sticker?
     

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