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98 and 99 gear options

Discussion in '1st Gen. Tacomas (1995-2004)' started by Ricky B, Oct 30, 2024.

  1. Oct 30, 2024 at 8:07 AM
    #1
    Ricky B

    Ricky B [OP] Well-Known Member

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    What gears did Tacoma use in 98 and 99 xcab’s with 2.7 manual transmission.
     
  2. Oct 30, 2024 at 8:09 AM
    #2
    Speedytech7

    Speedytech7 Toyota Cult Ombudsman

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    FCQM+VG Cheney, Washington
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    It's less Tacoma and more mod
    3.58, 4.10, 4.30, rarely 4.56

    Take a picture of your vin tag on the door jamb and we can tell which gearset it is
     
  3. Oct 30, 2024 at 8:15 AM
    #3
    Ricky B

    Ricky B [OP] Well-Known Member

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    I know what I got. I found a front dif off a 99 that is good to bolt up. The guy didnt keep the vin so I’m going have to do it another way. Any suggestions on figuring what he has?
     
  4. Oct 30, 2024 at 8:18 AM
    #4
    Speedytech7

    Speedytech7 Toyota Cult Ombudsman

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    It's less Tacoma and more mod
    Front diff is easy, unbolt the clamshell and count the teeth on the ring and pinion, or if you hate yourself you can try to count turns without axles. It's mostly likely going to be 4.10, that is the most common ratio by far through all the years
     
  5. Oct 30, 2024 at 3:03 PM
    #5
    6P4

    6P4 Well-Known Member

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    It'd put money on it being either a 4.10 or 4.30. If I had to guess between those two, I'd guess 4.10.

    Anecdotally, I've observed that earlier (98 and older) 3RZ manual trucks have 4.10 and that later (2000 and newer) have 4.30. Between 98 and 00, I'm not sure exactly when the change happened.
     
  6. Oct 30, 2024 at 5:46 PM
    #6
    badaboom

    badaboom Well-Known Member

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    GEN1 1998 Toyota Tacoma SR5 4cyl. 2.7
    Pretty much nothing yet rolls drives sucks fuel
    Try drivers side door, door jam tag. Mine is 1998 tacoma barebone manual locking hubs sr5 5spd 3.58 ratios.
    Its a'ok although will be moving to 4.10 with front air locker rear elocker.

    tacoma newtires.jpg
     
  7. Oct 30, 2024 at 6:21 PM
    #7
    6P4

    6P4 Well-Known Member

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    I wish I knew why some trucks have 3.xx gears. I've never seen them in the wild.

    My truck is also a 1998 with manual transmission, manual hubs, manual windows, manual locks... but I do have a tach and A/C and 4.10 gears. Must be an option package but I couldn't say what it is.
     
  8. Oct 30, 2024 at 10:17 PM
    #8
    Xbeaus

    Xbeaus Well-Known Member

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    Toytec coilovers. Height adjustable Bilstein's. 265/75/16 MT. TRD wheels. Rebuilt r150f. Marlin clutch kit. All kinds of new parts...
    my 98 with manual transmission and v6 has 3.91 gears. It is kind of odd how they have those ratios.
     
  9. Oct 30, 2024 at 10:19 PM
    #9
    hr206

    hr206 Well-Known Member

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    Mine is a '98 barebones manual hubs with the 225 width tires. It's 3.58. Always wished it was a tiny bit shorter, like 3.73.

    According to the brochure, it should have been 3.42.
     
  10. Oct 31, 2024 at 7:43 AM
    #10
    Ricky B

    Ricky B [OP] Well-Known Member

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    If I can grab my front drive shaft and shake it. Has quite a bit of slack. It works but roars. I’m thinking bearing out. Anybody got any advice. Oil is thick and hasnt been changed in a long time.
     
    Last edited: Nov 1, 2024
  11. Nov 1, 2024 at 7:03 AM
    #11
    Ricky B

    Ricky B [OP] Well-Known Member

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    I located a front differential out of a 1999 manual hubs, 5speed and 2.7. The guy pulled it years ago but didn’t write down gearing. He will allow me to crack it and count the teeth. So do you use permatex gasket maker or is there a gasket that goes between the two clam halves? If its not a 4:10 i want to seal it back up for the owner.
     
  12. Nov 1, 2024 at 7:47 AM
    #12
    Red_03Taco

    Red_03Taco Well-Known Member

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    Permatex or FIPG should work fine. I think the red Toyota FIPG is the one designed for contact with gear oil if I'm not mistaken
     
  13. Nov 1, 2024 at 2:06 PM
    #13
    OLDHMECH61

    OLDHMECH61 Well-Known Member

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    1UZ swap, trutrac diff, tundra brakes, 3 lift, FJ rims
    Ehh its also stamped on the ring gear edge so a 4:56 will be 4.5 a 4:30 will be 4.3 4:10=4.1 and so on. My 99 prerunner single cab, 2.7ltr, auto trans came with 4:30 gears, after install of 255/85 R16 tires speedo was off by quite a bit and it was a little sluggish. Installed a 4:56 diff from a single cab 2004 4x4 auto and speedo was spot on, food for thought. Have had my rear diff out numerous times permatex ultra black works great
     
    Ricky B[OP] likes this.

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