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Re-Gearing questions involving front end

Discussion in 'Technical Chat' started by PWhite13, Jun 19, 2010.

  1. Jun 19, 2010 at 7:41 PM
    #1
    PWhite13

    PWhite13 [OP] Well-Known Member

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    In a 4x4 truck,say someone wanted to re-gear it, such as putting in 4.10 gears in the rear, wouldn't that mean that the front wheels are spinning at a faster rate than the rear wheels?(in 4x4)

    This thought just popped into my head, and I don't know too much about the subject, so there is probably something I'm missing.
     
  2. Jun 19, 2010 at 7:43 PM
    #2
    afd23a

    afd23a Well-Known Member

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    you have to regear the front and rear diffs to the same ratio or else you're going to cause a lot of damage
     
  3. Jun 19, 2010 at 7:43 PM
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    jdkeller

    jdkeller How many words can be fit in this s

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    On 4x4 your supposed to have the front match the back. So regear to 4.10 in the front too.
     
  4. Jun 19, 2010 at 7:45 PM
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    PWhite13

    PWhite13 [OP] Well-Known Member

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    Oh I see. I didn't realize people were re-gearing the front, along with the rear. It makes much more sense now:). Thanks for the answers, btw.
     
  5. Jun 19, 2010 at 7:56 PM
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    Janster

    Janster Old & Forgetful

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    Well....

    You CAN NOT run with two different sets of gears in the front & rear. The gears need to be the same, or you're most likely going to destroy something (tcase).

    **some people might say you can run different gears as long as they are close in ratio. But - for the sake of learning and doing it right - you should always run the exact gears front & rear.

    That number is the amount of revolutions the driveshaft turns (pinion gear) to every one revolution of the wheels (ring gear). So...if the rear wheels are 4.10 ratio and the front is only 3.73 - then yes....the rear will spin faster than the front. However - if the rear is 4.10 and the front is 4.56 - then the front will spin slower than the rear.
     
  6. Jun 19, 2010 at 8:07 PM
    #6
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    As everyone has said - equal ratios.

    Some people will tell you you can get away with close ratios (i.e. 4.10 at one end and 4.11 at the other). I would invite them to do whatever they like with their trucks, mine is going to be geared the same front and rear.
     
  7. Jun 19, 2010 at 8:17 PM
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    PWhite13

    PWhite13 [OP] Well-Known Member

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    Yeah I mean I'm not currently in the process of re-gearing, but maybe in the future and I think I would definitely do equal ratios. Doesn't seem to be a reason not to. With 33"s, would a re-gear even be needed for moderate off-roading?(I.E. no serious rock crawling, just trails and climbs and desert kinda stuff)
     
  8. Jun 19, 2010 at 8:39 PM
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    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Most people seem to agree 33s cause minimal power loss for a 2nd gen V6 so regearing isn't "necessary" unless you want that power back.

    The Taco's gear range is plenty capable of any offroading you'd want to do without significantly (SAS, etc.) modifying it. If you're wheeling so hard you need, as in must have no matter what, new gears, you may as well go head and get new axles, cage the thing, etc.
     
  9. Jul 21, 2010 at 12:13 PM
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    PWhite13

    PWhite13 [OP] Well-Known Member

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    Yeah, probably nothing too crazy. Just trails around the Southern California area. Thanks for your help, jandrews and Janster.
     
  10. Jul 21, 2010 at 12:24 PM
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    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

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    Yeah, the 2nd gen v6's push 33's no problem. I'm running 35's on stock gears at the moment, and though there is power loss, even with that large of a tire the truck still drives fine. A regear will still be in my trucks future though.
     
  11. Jan 12, 2011 at 2:07 PM
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    Jraugust

    Jraugust Well-Known Member

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    Im glad that someone seems to see my point... Ive got a 2004 tacoma with 35's, but its got a 4 cylinder in it with the stock gears. Although there is powerloss the only time i can tell its affected is the freeway at 75 and if im in real thick mud. I plan to regear but the truck does fine, and looks good on top of it :)
     
  12. Jan 12, 2011 at 4:06 PM
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    Trapper6speed

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    Also 4.10 are stupid expencive, Lift get 35s then gear to 4.56s.
     
  13. Jan 13, 2011 at 4:08 AM
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    Jraugust

    Jraugust Well-Known Member

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    Dont 4.10's come stock in some tacomas?
     
  14. Jan 13, 2011 at 11:42 AM
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    Digiratus

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    1st gen TRDs with v6s come with a 4.10 ratio.
     
  15. Jan 13, 2011 at 1:00 PM
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    Jraugust

    Jraugust Well-Known Member

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    Weird, my truck came with 4.10's stock but its a 2.7L
     
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