Toyota 2WD rear axle, gearing and transmission info

Discussion in 'Engine/Drivetrain' started by SD YOTA, Aug 9, 2009.

  1. beyondspexj

    beyondspexj Addict

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    i read somewhere that the 8 inch rear in the base model trucks with the 4 speeds wouldnt allow you to swap in a new gearset due to its design. is this true? i hope not since i found a guy here intown with a 4.10 gear set for cheap!
     
  2. Malessohomegrown

    Malessohomegrown Toyotaholic

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    Mines been done already chelu.
     
  3. beyondspexj

    beyondspexj Addict

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    No doubt. Gunna go grab it tomorrow. $50 for the whole thing
     
  4. Scomber

    Scomber Enthusiast

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    I'll just throw this out: My parts truck has a 7.5" 3.73 rear end. The axle and diff housing are so rusted out that it's dripping lube, but I think the inside is still good. About 185K on the odo. Maybe come spring I should have it apart, just to see how it comes apart. Once I do, I don't know if anybody's in the market for those gears.
     
  5. Malessohomegrown

    Malessohomegrown Toyotaholic

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    Yo sal my bad I gave you a wrong bit of information.The overall length of the 4x's housing is slightly longer then that of the 2wd housing therefore the axles off the 5lug would come up a bit short.It would still grab but would allow for play and potential damage to the third member and splines on the axles.So If you want the lower gearing off a 4x or your 4runner you have to pull the third member and put it in an 8" 2wd housing.Chelu as for you the third members can be swapped to any 8" housing but not the axles
     
  6. Malessohomegrown

    Malessohomegrown Toyotaholic

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    Scomber if you pull it and its rusted out try soaking it in some diesel for a week or more.
     
  7. beyondspexj

    beyondspexj Addict

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    thanx brutha. ill update my build thread that im working on when i pick it up tomorrow.
     
  8. Sal-G.77

    Sal-G.77 Enthusiast

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    Thanks Malesso,

    I guess I'm stuck with this 6 lug patten for a while.... :doah:
    I do appreciate the tech info... Sounds like you know your sh!t:waytogo:
     
  9. yota89

    yota89 Enthusiast

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    My sticker on my 89 says G40 is that a trans ???.....
    No Ws.....and how would I tell if the trans is out from the truck?
     
  10. Naz

    Naz Newbie

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    can someone post the link to the codes decipher with with size/ratio etc (again). Seems the original is not working. My '82 longbed (originally 4-speed) third member is way noisy and has ~ 1/2 of play. There's a '87 extended cab in the wreck yard and I want to know if I should buy the whole housing/differential or just can take the third member.
     
  11. White Trash

    White Trash Toyotaholic

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    I never go by the codes on old vehicles since things usually get mixed around over the years. Easiest way to tell what rear axle you have is to peek underneath and see where the drain plug is on the housing. Drivers side is 8" which is typical 4 speed equipment with 3.07 gears and passenger is 7.5" with commonly have 3.42's and lower numerically.
     
  12. zazzn

    zazzn Newbie

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    Hello Fella's,

    I'm hoping you can help me out here, I'm from the Supra side of things and I'm trying to go to the 3.5 in the late 80's to mid 90's pre-tacomas/tacomas. I'm trying to figure out if the ring and pinion in the 8" is the same as what the supra uses on these G model transmissions. The only issue is after 89 they moved to this crazy A01A style listing so I need a B01A or G series.

    Anyone know the teeth on the ring gear and the pinion?
     

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