Got gears?

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

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  1. Brett Slater
    Sticky

    Wheelhop Remedies - F41 Suspension

    Brett Slater, Apr 15, 2017 ... 5 6 7
    Replies:
    128
    Views:
    7,370
    Guy Parquette
    Oct 8, 2023
  2. scubasteve455

    Getting ready to install 12 bolt

    scubasteve455, May 23, 2018 ... 6 7 8
    Replies:
    141
    Views:
    6,300
    monzaz
    Sep 3, 2018
  3. matt68gs400

    Gear ratio, wheel size, and TH400

    matt68gs400, Aug 31, 2015 ... 4 5 6
    Replies:
    106
    Views:
    13,295
    matt68gs400
    Oct 2, 2016
  4. Torsdalen

    10 Bolt rear axle rebuild for my 70 GS455

    Torsdalen, Feb 26, 2017 ... 3 4 5
    Replies:
    97
    Views:
    6,680
    BrianTrick
    Jun 8, 2017
  5. 1969buickgs455

    Need Help!! 8.2 10 bolts in reverse pulls rear wheels in bind and pop

    1969buickgs455, Jan 4, 2021 ... 3 4 5
    Replies:
    86
    Views:
    4,003
    69GS430/TKX
    Apr 11, 2021
  6. stordahl

    Wrecked diff. in '70 skylark custom, going posi!

    stordahl, May 25, 2016 ... 2 3 4
    Replies:
    71
    Views:
    6,703
    monzaz
    Aug 29, 2016
  7. 73 Stage-1

    Challenging Driveshaft Removal

    73 Stage-1, Dec 5, 2022 ... 2 3 4
    Replies:
    63
    Views:
    2,816
    73 Stage-1
    Mar 6, 2023
  8. 68 Skylark cust

    Diff Gear change 3.08 to ??

    68 Skylark cust, Jun 23, 2021 ... 2 3 4
    Replies:
    62
    Views:
    3,089
    Fox's Den
    Jun 18, 2022
  9. buicks

    Not enough gear

    buicks, May 1, 2015 ... 2 3 4
    Replies:
    61
    Views:
    7,481
    buicks
    Jul 16, 2015
  10. Darron72Skylark

    8.5” BOP rebuild

    Darron72Skylark, Oct 13, 2019 ... 2 3
    Replies:
    58
    Views:
    3,282
    Darron72Skylark
    Dec 17, 2019
  11. Christopher Spouse Drew

    Finding a 10 bolt 8.5 posi In salvage yards

    Christopher Spouse Drew, Dec 15, 2018 ... 2 3
    Replies:
    56
    Views:
    6,945
    BrianTrick
    Jan 30, 2019
  12. elagache

    Which rear end (and tires?) for my JW powered 65 Special Wagon?

    elagache, Aug 1, 2012 ... 2 3
    Replies:
    56
    Views:
    5,441
    bufords
    Aug 15, 2012
  13. hobbby

    Highway speed vibration from rear end

    hobbby, Apr 29, 2015 ... 2 3
    Replies:
    52
    Views:
    5,933
    monzaz
    Aug 18, 2016
  14. Dale G

    How much is it worth

    Dale G, Nov 30, 2017 ... 2 3
    Replies:
    50
    Views:
    4,107
    Dale G
    Dec 17, 2017
  15. BrianinStLouis

    Man, thats a lotta play. 72 Suncoupe

    BrianinStLouis, Sep 20, 2016 ... 2 3
    Replies:
    49
    Views:
    4,265
    BrianinStLouis
    Oct 16, 2016
  16. Briz

    Something broke

    Briz, Jan 20, 2018 ... 2 3
    Replies:
    48
    Views:
    4,094
    monzaz
    Mar 5, 2018
  17. shadewolf

    gears for highway driving and posi

    shadewolf, May 17, 2013 ... 2 3
    Replies:
    46
    Views:
    5,971
    shadewolf
    Jun 5, 2013
  18. Chatarina

    Strange Transmission?

    Chatarina, Dec 31, 2021 ... 2 3
    Replies:
    45
    Views:
    1,544
    pbr400
    Jan 7, 2022
  19. FJM568

    Setting up 71 8.5 A-body from 2.xx open to 3.08 posi

    FJM568, Mar 28, 2011 ... 2 3
    Replies:
    44
    Views:
    4,583
    FJM568
    Nov 24, 2016
  20. ronbz455

    72 Skylark 10 Bolt Converting to 86 Regal

    ronbz455, Jun 9, 2014 ... 2 3
    Replies:
    44
    Views:
    3,130
    TexasT
    Jul 19, 2014
  21. tball

    direct swap for 2-series 71 Skylark 8.5" 10 bolt?

    tball, Jun 8, 2018 ... 2 3
    Replies:
    43
    Views:
    2,854
    LARRY70GS
    Jan 20, 2019
  22. josehf34

    8.2 rear gears change

    josehf34, Jul 3, 2018 ... 2 3
    Replies:
    43
    Views:
    4,030
    BrianTrick
    Jul 22, 2018
  23. CruisinLou

    Correct speedometer gear?

    CruisinLou, Apr 29, 2018 ... 2 3
    Replies:
    43
    Views:
    3,025
    DasRottweiler
    Jul 22, 2018
  24. Sir Speedy

    Rear Gears

    Sir Speedy, Apr 3, 2010 ... 2 3
    Replies:
    43
    Views:
    4,898
    monzaz
    May 21, 2010
  25. josehf34

    some help changing gears on a 8.2

    josehf34, Oct 28, 2018 ... 2 3
    Replies:
    42
    Views:
    2,686
    josehf34
    Dec 3, 2018
  26. MarcoD

    66 Wildcat - 9-3/8" rear end

    MarcoD, Jan 1, 2018 ... 2 3
    Replies:
    41
    Views:
    6,621
    Wild_Cat
    Aug 17, 2021
  27. Larryb

    can anyone ID this axle

    Larryb, Jan 9, 2021 ... 2 3
    Replies:
    41
    Views:
    3,720
    monzaz
    Apr 22, 2021
  28. VET

    2.93 posi in a 8.2 diff?

    VET, Oct 6, 2023 ... 2 3
    Replies:
    40
    Views:
    1,551
    VET
    Oct 12, 2023
  29. CJay

    U joints- nothing is ever easy

    CJay, Jan 9, 2022 ... 2 3
    Replies:
    40
    Views:
    2,480
    Deogi2
    Dec 11, 2022
  30. Briz

    Gots crunchy magnetic stuff in my rear end

    Briz, Jul 9, 2017 ... 2
    Replies:
    39
    Views:
    2,604
    Briz
    Aug 26, 2017
  31. gary sell

    Rear end swap question

    gary sell, Apr 21, 2017 ... 2
    Replies:
    39
    Views:
    1,957
    gary sell
    May 28, 2017
  32. jr_

    1971 skylark - wanting 3.55 posi

    jr_, Mar 13, 2023 ... 2
    Replies:
    38
    Views:
    1,658
    LARRY70GS
    Jun 7, 2023
  33. jmbarber

    What is this rear end

    jmbarber, Jun 7, 2020 ... 2
    Replies:
    38
    Views:
    1,328
    jmbarber
    Aug 17, 2020
  34. Mike Trom

    2.93 or 3.23? What to get?

    Mike Trom, Aug 18, 2007 ... 2
    Replies:
    38
    Views:
    6,396
    BQUICK
    Sep 17, 2007
  35. Dj stoner

    8.5" Rebuild question

    Dj stoner, Jan 2, 2024 ... 2
    Replies:
    37
    Views:
    1,753
    monzaz
    Apr 3, 2024
  36. 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
  37. gs430

    Ring and pinion setup advice

    gs430, Oct 5, 2019 ... 2
    Replies:
    37
    Views:
    2,070
    BrianTrick
    Sep 18, 2020
  38. gscalifornia

    3.73 or 3.90 is there a big difference

    gscalifornia, Jun 5, 2020 ... 2
    Replies:
    37
    Views:
    2,932
    LARRY70GS
    Jun 18, 2020
  39. Opa

    Yukon Posi or Eaton Detroit Locker

    Opa, Jan 12, 2020 ... 2
    Replies:
    37
    Views:
    2,503
    monzaz
    Jan 18, 2020
  40. Rich Merjanian

    Need Help Identifying 8.2” Rear Please

    Rich Merjanian, Nov 2, 2018 ... 2
    Replies:
    37
    Views:
    2,028
    monzaz
    Nov 7, 2018
  41. Bryon

    1962 Buick 9 3/8 rear ends

    Bryon, Mar 17, 2018 ... 2
    Replies:
    36
    Views:
    5,260
    monzaz
    Nov 25, 2023
  42. ravensbud

    Need some help with gear pattern

    ravensbud, Feb 28, 2016 ... 2
    Replies:
    35
    Views:
    3,278
    monzaz
    Apr 12, 2016
  43. Eric68GS

    10 bolt from chevelle for 68 Buick GS

    Eric68GS, Jul 4, 2015 ... 2
    Replies:
    35
    Views:
    6,091
    monzaz
    Apr 3, 2016
  44. GRIMM

    9", or 12 Bolt?

    GRIMM, Aug 28, 2006 ... 2
    Replies:
    35
    Views:
    6,821
    monzaz
    Mar 16, 2010
  45. srobinr

    Bop 8.2 axle repair question

    srobinr, May 28, 2022 ... 2
    Replies:
    34
    Views:
    1,677
    monzaz
    Jun 11, 2022
  46. 1969RIVI

    69 Riv drive shaft parts

    1969RIVI, May 3, 2021 ... 2
    Replies:
    34
    Views:
    1,119
    Briz
    Jul 4, 2021
  47. GMMADMAN

    12 bolt in my '66 Skylark

    GMMADMAN, Dec 8, 2018 ... 2
    Replies:
    34
    Views:
    2,469
    monzaz
    Jun 8, 2021
  48. Cutlass

    Need advice what to do with axle

    Cutlass, Oct 9, 2018 ... 2
    Replies:
    34
    Views:
    1,913
    BrianTrick
    May 8, 2019
  49. kick71

    New 3.73 and rear setup in

    kick71, Sep 27, 2008 ... 2
    Replies:
    34
    Views:
    2,773
    kick71
    Nov 2, 2008
  50. jmccart

    8.5 10 bolts, 71 & later Buick & Olds, Pontiac too?

    jmccart, Aug 19, 2009 ... 2
    Replies:
    33
    Views:
    17,497
    Bens99gtp
    Jul 7, 2021
  51. Christopher Spouse Drew

    Identifying a 10 bolt 8.5 posi

    Christopher Spouse Drew, Dec 4, 2018 ... 2
    Replies:
    33
    Views:
    3,010
    monzaz
    Dec 16, 2018
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