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quick rear diff question

Discussion in '4 Cylinder' started by Taco505, Mar 4, 2010.

  1. Mar 4, 2010 at 3:13 PM
    #1
    Taco505

    Taco505 [OP] Well-Known Member

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    hey guys i just have a quick question, i have been searching and i cant find a straight answer.

    just wondering if the 2nd gen, 2wd (non-prerunner), 2.7L tacos have an 8.4" rear diff?

    thanks for the help :D
     
  2. Mar 4, 2010 at 3:14 PM
    #2
    afd23a

    afd23a Well-Known Member

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  3. Mar 4, 2010 at 9:00 PM
    #3
    neslerrah

    neslerrah Taco lovin'

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    Yes, 5 lugs have a similar diff set up as the T100s (8.4").

    Do you plan on re-gearing?
     
  4. Mar 4, 2010 at 10:03 PM
    #4
    Taco505

    Taco505 [OP] Well-Known Member

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    ya im planning on regearing like 4.27's or 4.56's and getting a locker just confused on what size i have haha.

    but thanks for the help guys!
     
  5. Mar 4, 2010 at 10:23 PM
    #5
    08pretaco

    08pretaco Almost there

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  6. Mar 5, 2010 at 5:57 AM
    #6
    neslerrah

    neslerrah Taco lovin'

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    What size wheel do you plan on running? Both sound high, the ratio I plan to run with my 31s are 4.10s to get it back into 'factory specs'.
     
  7. Mar 5, 2010 at 7:24 AM
    #7
    Taco505

    Taco505 [OP] Well-Known Member

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    well right not i have 255/55-18 alomst a 30 and im looking to regear for performance and add a locker or lsd because i go camping some times and i do some mild off roading its just a pain in the ass when i get stuck haha

    but look at the tire calc for the info i put in: current- 215/70-15
    New- 255/55-18


    http://www.tacomaworld.com/forum/tirecalc.php


    increased power is: 4.27, 4.56

    and if i went back to spec i would do lean toward the high end.

    factory spec: 3.73, 3.91, 4.11
     
  8. Mar 5, 2010 at 7:35 AM
    #8
    06dak

    06dak Well-Known Member

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    Something is wrong with their rpm calculator, or maybe I'm crazy, but...

    I have a 2.7L PreRunner with the 4.11 rear end. I put factory take off 17s on my truck. By the calculator, it says that with 265/65/17s I should be turning 2937 RPMs at 65. However, in my truck I set the cruise at 75 (which is probably 72-73) and I am running around 2700-2800 RPM. Any thoughts how it could be that far off?
     
  9. Mar 5, 2010 at 7:41 AM
    #9
    08pretaco

    08pretaco Almost there

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    i think thats an ideal condition. i think real world is a little less cause you also have many other factors playing
     
  10. Mar 5, 2010 at 7:42 AM
    #10
    Taco505

    Taco505 [OP] Well-Known Member

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    that is kinda weird but i actually have no idea myabe your spedo is off?? so the rpms just looks funky when your driving haha

    maybe someone smarter thaqn me can chime in?
     
  11. Mar 5, 2010 at 7:45 AM
    #11
    08pretaco

    08pretaco Almost there

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    the factory speedo is give or take 5% i think. so you might be running actual speed now with the slightly bigger tires, i do with my 265/75/16 actually run the speed my speedo says
     
  12. Mar 5, 2010 at 7:50 AM
    #12
    afd23a

    afd23a Well-Known Member

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    :rolleyes:....I've missed out on some things too so I know what you mean :annoyed:
     
  13. Mar 5, 2010 at 9:23 AM
    #13
    neslerrah

    neslerrah Taco lovin'

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    Makes since to have more power, the down side is losing MPG. I was thinking of going with 4.56 myself, when I started calling around, more and more people were telling me there is no need for them. So I figured, getting them back into factory spec should be sufficient for my style.

    The only issue I've encounter (like every one else) is driving in deep snow. I have to have a shovel to dig my way out of it. I just want to regear and put in a Powertrax lock right so I can do more difficult trails.

    BTW, where can you get some 4.27 gears for our trucks?
     
  14. Mar 5, 2010 at 9:34 AM
    #14
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    The 5 luggers have a 7.5" rear diff.
     
  15. Mar 5, 2010 at 9:38 AM
    #15
    afd23a

    afd23a Well-Known Member

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    I thought that was just the 1st gens that had the "4cyl" diff and that the 2nd gens had the same size ring just different ratios :confused:
     
  16. Mar 5, 2010 at 9:39 AM
    #16
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    From what I have found, they are a 7.5"
     
  17. Mar 5, 2010 at 9:40 AM
    #17
    neslerrah

    neslerrah Taco lovin'

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    From here, I think the 5 lugs have 8.4", same as the prerunners. Here is a link comparing the two with pics.
     
  18. Mar 5, 2010 at 9:44 AM
    #18
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Interesting......I was under the impresion only the X Runners shared the same size diff.......Thanks for the link!
     
  19. Mar 5, 2010 at 9:46 AM
    #19
    neslerrah

    neslerrah Taco lovin'

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    Your welcome. I too found it interesting...
     
  20. Mar 5, 2010 at 9:50 AM
    #20
    BAMFTACO

    BAMFTACO Pabst Blue Ribbon on ice

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    Sorry to intrude on your thread but do any tacomas come with lsd
     
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