Got gears?

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

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  1. scubasteve455

    Getting ready to install 12 bolt

    scubasteve455, May 23, 2018 ... 6 7 8
    Replies:
    141
    Views:
    4,572
    monzaz
    Sep 3, 2018
  2. matt68gs400

    Gear ratio, wheel size, and TH400

    matt68gs400, Aug 31, 2015 ... 4 5 6
    Replies:
    106
    Views:
    9,744
    matt68gs400
    Oct 2, 2016
  3. Torsdalen

    10 Bolt rear axle rebuild for my 70 GS455

    Torsdalen, Feb 26, 2017 ... 3 4 5
    Replies:
    97
    Views:
    5,220
    BrianTrick
    Jun 8, 2017
  4. 1969buickgs455

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

    1969buickgs455, Jan 4, 2021 ... 3 4 5
    Replies:
    84
    Views:
    1,679
    monzaz
    Jan 21, 2021
  5. stordahl

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

    stordahl, May 25, 2016 ... 2 3 4
    Replies:
    71
    Views:
    5,683
    monzaz
    Aug 29, 2016
  6. buicks

    Not enough gear

    buicks, May 1, 2015 ... 2 3 4
    Replies:
    61
    Views:
    6,153
    buicks
    Jul 16, 2015
  7. Darron72Skylark

    8.5” BOP rebuild

    Darron72Skylark, Oct 13, 2019 ... 2 3
    Replies:
    58
    Views:
    2,193
    Darron72Skylark
    Dec 17, 2019
  8. Christopher Spouse Drew

    Finding a 10 bolt 8.5 posi In salvage yards

    Christopher Spouse Drew, Dec 15, 2018 ... 2 3
    Replies:
    56
    Views:
    3,206
    BrianTrick
    Jan 30, 2019
  9. elagache

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

    elagache, Aug 1, 2012 ... 2 3
    Replies:
    56
    Views:
    4,451
    bufords
    Aug 15, 2012
  10. hobbby

    Highway speed vibration from rear end

    hobbby, Apr 29, 2015 ... 2 3
    Replies:
    52
    Views:
    5,274
    monzaz
    Aug 18, 2016
  11. Brett Slater

    Wheelhop Remedies - F41 Suspension

    Brett Slater, Apr 15, 2017 ... 2 3
    Replies:
    51
    Views:
    3,294
    monzaz
    Nov 15, 2020
  12. Dale G

    How much is it worth

    Dale G, Nov 30, 2017 ... 2 3
    Replies:
    50
    Views:
    2,891
    Dale G
    Dec 17, 2017
  13. BrianinStLouis

    Man, thats a lotta play. 72 Suncoupe

    BrianinStLouis, Sep 20, 2016 ... 2 3
    Replies:
    49
    Views:
    3,474
    BrianinStLouis
    Oct 16, 2016
  14. Briz

    Something broke

    Briz, Jan 20, 2018 ... 2 3
    Replies:
    48
    Views:
    3,281
    monzaz
    Mar 5, 2018
  15. shadewolf

    gears for highway driving and posi

    shadewolf, May 17, 2013 ... 2 3
    Replies:
    46
    Views:
    5,286
    shadewolf
    Jun 5, 2013
  16. 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:
    3,766
    FJM568
    Nov 24, 2016
  17. ronbz455

    72 Skylark 10 Bolt Converting to 86 Regal

    ronbz455, Jun 9, 2014 ... 2 3
    Replies:
    44
    Views:
    2,546
    TexasT
    Jul 19, 2014
  18. tball

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

    tball, Jun 8, 2018 ... 2 3
    Replies:
    43
    Views:
    2,022
    LARRY70GS
    Jan 20, 2019
  19. josehf34

    8.2 rear gears change

    josehf34, Jul 3, 2018 ... 2 3
    Replies:
    43
    Views:
    2,268
    BrianTrick
    Jul 22, 2018
  20. CruisinLou

    Correct speedometer gear?

    CruisinLou, Apr 29, 2018 ... 2 3
    Replies:
    43
    Views:
    1,731
    DasRottweiler
    Jul 22, 2018
  21. Sir Speedy

    Rear Gears

    Sir Speedy, Apr 3, 2010 ... 2 3
    Replies:
    43
    Views:
    4,416
    monzaz
    May 21, 2010
  22. josehf34

    some help changing gears on a 8.2

    josehf34, Oct 28, 2018 ... 2 3
    Replies:
    42
    Views:
    1,710
    josehf34
    Dec 3, 2018
  23. Larryb

    can anyone ID this axle

    Larryb, Jan 9, 2021 ... 2 3
    Replies:
    40
    Views:
    587
    monzaz
    Feb 8, 2021
  24. Briz

    Gots crunchy magnetic stuff in my rear end

    Briz, Jul 9, 2017 ... 2
    Replies:
    39
    Views:
    2,170
    Briz
    Aug 26, 2017
  25. gary sell

    Rear end swap question

    gary sell, Apr 21, 2017 ... 2
    Replies:
    39
    Views:
    1,587
    gary sell
    May 28, 2017
  26. jmbarber

    What is this rear end

    jmbarber, Jun 7, 2020 ... 2
    Replies:
    38
    Views:
    886
    jmbarber
    Aug 17, 2020
  27. Mike Trom

    2.93 or 3.23? What to get?

    Mike Trom, Aug 18, 2007 ... 2
    Replies:
    38
    Views:
    4,799
    BQUICK
    Sep 17, 2007
  28. gs430

    Ring and pinion setup advice

    gs430, Oct 5, 2019 ... 2
    Replies:
    37
    Views:
    1,675
    BrianTrick
    Sep 18, 2020
  29. gscalifornia

    3.73 or 3.90 is there a big difference

    gscalifornia, Jun 5, 2020 ... 2
    Replies:
    37
    Views:
    1,309
    LARRY70GS
    Jun 18, 2020
  30. Opa

    Yukon Posi or Eaton Detroit Locker

    Opa, Jan 12, 2020 ... 2
    Replies:
    37
    Views:
    1,252
    monzaz
    Jan 18, 2020
  31. Rich Merjanian

    Need Help Identifying 8.2” Rear Please

    Rich Merjanian, Nov 2, 2018 ... 2
    Replies:
    37
    Views:
    1,342
    monzaz
    Nov 7, 2018
  32. MarcoD

    66 Wildcat - 9-3/8" rear end

    MarcoD, Jan 1, 2018 ... 2
    Replies:
    36
    Views:
    3,767
    MarcoD
    May 14, 2018
  33. ravensbud

    Need some help with gear pattern

    ravensbud, Feb 28, 2016 ... 2
    Replies:
    35
    Views:
    2,903
    monzaz
    Apr 12, 2016
  34. Eric68GS

    10 bolt from chevelle for 68 Buick GS

    Eric68GS, Jul 4, 2015 ... 2
    Replies:
    35
    Views:
    5,744
    monzaz
    Apr 3, 2016
  35. GRIMM

    9", or 12 Bolt?

    GRIMM, Aug 28, 2006 ... 2
    Replies:
    35
    Views:
    6,543
    monzaz
    Mar 16, 2010
  36. Bryon

    1962 Buick 9 3/8 rear ends

    Bryon, Mar 17, 2018 ... 2
    Replies:
    34
    Views:
    2,953
    monzaz
    Oct 29, 2020
  37. Cutlass

    Need advice what to do with axle

    Cutlass, Oct 9, 2018 ... 2
    Replies:
    34
    Views:
    1,579
    BrianTrick
    May 8, 2019
  38. kick71

    New 3.73 and rear setup in

    kick71, Sep 27, 2008 ... 2
    Replies:
    34
    Views:
    2,336
    kick71
    Nov 2, 2008
  39. Christopher Spouse Drew

    Identifying a 10 bolt 8.5 posi

    Christopher Spouse Drew, Dec 4, 2018 ... 2
    Replies:
    33
    Views:
    1,576
    monzaz
    Dec 16, 2018
  40. matt68gs400

    Eaton Posi

    matt68gs400, Sep 19, 2015 ... 2
    Replies:
    33
    Views:
    3,771
    matt68gs400
    Jun 6, 2016
  41. jay3000

    Help me with traction. Will a powertrax locker work???

    jay3000, Dec 3, 2007 ... 2
    Replies:
    33
    Views:
    3,683
    monzaz
    Dec 20, 2008
  42. GRIMM

    Axle Conversion

    GRIMM, Jun 14, 2006 ... 2
    Replies:
    33
    Views:
    1,509
    GRIMM
    Jul 9, 2006
  43. monzaz

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

    monzaz, Apr 30, 2020 ... 2
    Replies:
    32
    Views:
    1,380
    monzaz
    Dec 12, 2020
  44. 66electrafied

    Driveline vibration tough to source

    66electrafied, Aug 15, 2017 ... 2
    Replies:
    32
    Views:
    1,444
    Ryanjbill15
    Jul 14, 2018
  45. TXGS

    410 gears on the Street

    TXGS, Mar 9, 2005 ... 2
    Replies:
    32
    Views:
    3,007
    MR.BUICK
    Mar 11, 2005
  46. Gtivalencia34

    What modern rear end is comprable to my 72 Skylark ( I need help plz)

    Gtivalencia34, Jun 9, 2019 ... 2
    Replies:
    31
    Views:
    1,460
    12lives
    Jun 12, 2019
  47. Dr. Roger

    Replacing pinion bearings on 8.5 diff

    Dr. Roger, Jan 25, 2019 ... 2
    Replies:
    31
    Views:
    968
    monzaz
    Feb 4, 2019
  48. GMMADMAN

    Ring/pinion set up question

    GMMADMAN, Apr 15, 2018 ... 2
    Replies:
    30
    Views:
    1,040
    GMMADMAN
    May 15, 2018
  49. BWINN519

    Will it fit ? 10 bolt posi question

    BWINN519, Mar 31, 2012 ... 2
    Replies:
    30
    Views:
    3,248
    LARRY70GS
    Jun 12, 2014
  50. lemmy-67

    driveshaft/ST400 noise?

    lemmy-67, Feb 22, 2013 ... 2
    Replies:
    30
    Views:
    3,189
    lemmy-67
    Jul 22, 2013
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