Got gears?

Too much gear? Not enough? Discuss all your rear end and driveshaft questions here.

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  1. ancientx

    Powertrax unit install

    ancientx, Oct 1, 2019
    Replies:
    3
    Views:
    652
    monzaz
    Oct 27, 2019
  2. gs430

    Ring and pinion setup advice

    gs430, Oct 5, 2019 ... 2
    Replies:
    37
    Views:
    2,069
    BrianTrick
    Sep 18, 2020
  3. 1969RIVI

    69 Riv GS rear end

    1969RIVI, Oct 6, 2019
    Replies:
    13
    Views:
    1,136
    1969RIVI
    Apr 2, 2020
  4. Darron72Skylark

    8.5” BOP rebuild

    Darron72Skylark, Oct 13, 2019 ... 2 3
    Replies:
    58
    Views:
    3,282
    Darron72Skylark
    Dec 17, 2019
  5. guyver002

    Driveline Angles Please Help Me Wrap My Head Around this

    guyver002, Oct 14, 2019
    Replies:
    7
    Views:
    950
    guyver002
    Oct 17, 2019
  6. Jim Wall

    Rear axle interchange possibilities

    Jim Wall, Oct 14, 2019
    Replies:
    1
    Views:
    532
    monzaz
    Oct 16, 2019
  7. hvramesq

    will it fit?

    hvramesq, Oct 18, 2019
    Replies:
    4
    Views:
    633
    monzaz
    Oct 21, 2019
  8. TimR

    Axle shaft runout

    TimR, Oct 27, 2019
    Replies:
    12
    Views:
    741
    TimR
    Nov 3, 2019
  9. lwalling

    3.42 9 3/8 71+ gears WTB

    lwalling, Nov 1, 2019
    Replies:
    9
    Views:
    975
    monzaz
    Jan 6, 2020
  10. Brandon Cocola

    73 GS rear end in 70?

    Brandon Cocola, Nov 1, 2019
    Replies:
    9
    Views:
    654
    monzaz
    Nov 2, 2019
  11. 2manybuicks

    Are Stock Buick Rears Really That Oddball?

    2manybuicks, Nov 4, 2019 ... 2
    Replies:
    20
    Views:
    1,789
    newyork455
    Nov 8, 2019
  12. 1972Mach1

    Who do you guys buy your gears from?

    1972Mach1, Nov 18, 2019
    Replies:
    10
    Views:
    886
    1972Mach1
    Nov 19, 2019
  13. BrianTrick

    Got Housings?

    BrianTrick, Nov 18, 2019
    Replies:
    17
    Views:
    1,116
    monzaz
    Dec 3, 2019
  14. Gary Bohannon

    Strongest replacement axles

    Gary Bohannon, Dec 11, 2019
    Replies:
    7
    Views:
    824
    BrianTrick
    Dec 17, 2019
  15. suntreemcanic

    3.42 Eaton Posi.

    suntreemcanic, Dec 11, 2019
    Replies:
    15
    Views:
    1,191
    suntreemcanic
    Feb 13, 2020
  16. 71GSX455-4SPD

    Boattail Riv + 575HP + Built 10 Bolt + Slicks = ?

    71GSX455-4SPD, Jan 4, 2020 ... 2
    Replies:
    20
    Views:
    1,352
    telriv
    May 21, 2020
  17. Opa

    Yukon Posi or Eaton Detroit Locker

    Opa, Jan 12, 2020 ... 2
    Replies:
    37
    Views:
    2,503
    monzaz
    Jan 18, 2020
  18. Jesse Tackett

    ID stamp location 70 GS 10 bolt differential

    Jesse Tackett, Jan 12, 2020
    Replies:
    2
    Views:
    518
    Jesse Tackett
    Jan 13, 2020
  19. vesseljr

    Skylark -65 axle width?

    vesseljr, Jan 20, 2020
    Replies:
    3
    Views:
    563
    vesseljr
    Jan 21, 2020
  20. Noskills

    74 & 75 Lesabre Conv. Deeper rear gear?

    Noskills, Feb 8, 2020
    Replies:
    13
    Views:
    658
    monzaz
    Feb 11, 2020
  21. Chris Gaunt

    Speedometer/Odometer Trans Gear Question

    Chris Gaunt, Feb 8, 2020
    Replies:
    5
    Views:
    559
    Chris Gaunt
    Feb 10, 2020
  22. BQUICK

    Gears for 1/8 mile

    BQUICK, Feb 11, 2020
    Replies:
    6
    Views:
    808
    hugger
    Feb 15, 2020
  23. josehf34

    Rebuild M21 or Borg Warner T5?

    josehf34, Feb 12, 2020
    Replies:
    9
    Views:
    564
    Andrew Sury
    Feb 13, 2020
  24. Luxus

    What rear do I have?

    Luxus, Feb 18, 2020 ... 2
    Replies:
    29
    Views:
    1,260
    Bigpig455
    Mar 3, 2020
  25. brianfxt

    69 Electra Posi Rear End Rebuilt Noise

    brianfxt, Feb 19, 2020
    Replies:
    1
    Views:
    436
    monzaz
    Feb 19, 2020
  26. CruisinLou

    Will this axle work ?

    CruisinLou, Feb 22, 2020
    Replies:
    8
    Views:
    586
    CruisinLou
    Feb 23, 2020
  27. 1969RIVI

    What gear ratio is this?

    1969RIVI, Feb 22, 2020
    Replies:
    5
    Views:
    563
    monzaz
    Feb 23, 2020
  28. josehf34

    Hydraulic clutch options?

    josehf34, Feb 24, 2020
    Replies:
    3
    Views:
    356
    TrunkMonkey
    Feb 27, 2020
  29. sean Buick 76

    Looking for a part number for 3.08 gears for a 71 8.5” rear.

    sean Buick 76, Mar 1, 2020
    Replies:
    5
    Views:
    578
    monzaz
    Mar 2, 2020
  30. Patsusedparts

    1971 - 9 3/8 inch posi project

    Patsusedparts, Mar 2, 2020
    Replies:
    10
    Views:
    953
    Patsusedparts
    Mar 7, 2020
  31. BubbaJ

    slip n slide

    BubbaJ, Mar 8, 2020 ... 2
    Replies:
    22
    Views:
    1,631
    kingdaddycreel
    Jul 3, 2020
  32. 68Rivi_In_Cali

    8.2 To 8.5 Swap Finally

    68Rivi_In_Cali, Mar 9, 2020
    Replies:
    7
    Views:
    621
    Bens99gtp
    Mar 10, 2020
  33. MNBelv57

    8.5 10 Bolt Question

    MNBelv57, Mar 9, 2020
    Replies:
    11
    Views:
    802
    436'd Skylark
    Mar 22, 2020
  34. Jon Lewis

    1975 Buick wagon rear axle swap

    Jon Lewis, Mar 17, 2020
    Replies:
    13
    Views:
    1,043
    nekkidhillbilly
    Apr 29, 2020
  35. BrianTrick

    Axle Bearings for 75 LeSabre 8.5”

    BrianTrick, Mar 18, 2020
    Replies:
    14
    Views:
    801
    newmexguy
    Apr 16, 2020
  36. hgiljr

    67 GS400 Speedo cable question

    hgiljr, Mar 22, 2020
    Replies:
    3
    Views:
    465
    Mark Demko
    Mar 25, 2020
  37. Jake G'S 455

    Replacement rear for my 69 GS

    Jake G'S 455, Mar 28, 2020 ... 2
    Replies:
    23
    Views:
    1,127
    BrianTrick
    Jul 11, 2020
  38. Dan Gerber

    1972 Riviera Rear-End Ratios

    Dan Gerber, Mar 28, 2020
    Replies:
    1
    Views:
    468
    flynbuick
    Mar 28, 2020
  39. Sebas

    1971-72 8.5 10bolt part# needed

    Sebas, Mar 31, 2020
    Replies:
    9
    Views:
    861
    LARRY70GS
    Mar 31, 2020
  40. Lory's 350

    Rearend identification

    Lory's 350, Mar 31, 2020 ... 2
    Replies:
    25
    Views:
    1,503
    monzaz
    Apr 10, 2020
  41. Superstingray77

    64' Riv to 5 x 4.75 hubs/rotors and axles.

    Superstingray77, Apr 1, 2020
    Replies:
    2
    Views:
    569
    LARRY70GS
    Apr 3, 2020
  42. Rob72GS

    posi unit or limited slip????

    Rob72GS, Apr 8, 2020
    Replies:
    10
    Views:
    917
    LARRY70GS
    Apr 10, 2020
  43. B-rock

    8.5 with bolt in axles.

    B-rock, Apr 9, 2020
    Replies:
    18
    Views:
    1,073
    LARRY70GS
    Apr 11, 2020
  44. Skylard

    12 Bolt Differential Type

    Skylard, Apr 10, 2020
    Replies:
    4
    Views:
    749
    OHC JOE
    Apr 10, 2020
  45. Canadian GS 350

    Is this for an A body?

    Canadian GS 350, Apr 12, 2020
    Replies:
    10
    Views:
    879
    BrianTrick
    Apr 14, 2020
  46. Rich Skylark

    Stamping Location

    Rich Skylark, Apr 16, 2020
    Replies:
    16
    Views:
    1,070
    monzaz
    Apr 29, 2020
  47. saskskylark71

    68 GS Rear Axle Tube Flanges

    saskskylark71, Apr 23, 2020
    Replies:
    15
    Views:
    721
    BrianTrick
    Apr 24, 2020
  48. robert v

    Crack noticed on BOP 8.2 10 bolt (casting flaw or problem)

    robert v, Apr 23, 2020
    Replies:
    9
    Views:
    813
    monzaz
    Apr 25, 2020
  49. Stage2

    Estate Wagon vs Wildcat

    Stage2, Apr 26, 2020
    Replies:
    14
    Views:
    987
    mich6212
    Oct 16, 2020
  50. monzaz

    Rear end GUY has a AXLE BEARING AND SEAL question!!!! HELP!

    monzaz, Apr 30, 2020 ... 2
    Replies:
    37
    Views:
    2,938
    BrianTrick
    Mar 2, 2024
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