Got gears?

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

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  1. tt455

    12 bolt BOP

    tt455, Jun 5, 2007
    Replies:
    4
    Views:
    922
    derek244
    Jun 5, 2007
  2. skd

    12 bolt Buick Riviera axle shaft bearing

    skd, Jun 13, 2018
    Replies:
    3
    Views:
    424
    skd
    Jun 14, 2018
  3. DRS4554

    12 bolt Cevy set-up

    DRS4554, Oct 10, 2005
    Replies:
    3
    Views:
    474
    65Lesabre
    Oct 10, 2005
  4. 69GS400s

    12 bolt Chevy ??

    69GS400s, Apr 23, 2007
    Replies:
    12
    Views:
    1,428
    LARRY70GS
    Apr 30, 2007
  5. agetnt9

    12 bolt chevy axle in 30 spline 10

    agetnt9, Feb 20, 2011
    Replies:
    4
    Views:
    1,644
    agetnt9
    Feb 23, 2011
  6. gsx678

    12 Bolt Chevy Questions

    gsx678, Jan 14, 2008
    Replies:
    13
    Views:
    1,944
    SS-TRUCK
    Jan 15, 2008
  7. Skylard

    12 Bolt Differential Type

    Skylard, Apr 10, 2020
    Replies:
    4
    Views:
    749
    OHC JOE
    Apr 10, 2020
  8. Tuna

    12 bolt drag

    Tuna, Jul 2, 2010
    Replies:
    5
    Views:
    976
    BQUICK
    Jul 28, 2010
  9. ElectraEric

    12 Bolt Electra Gears

    ElectraEric, Mar 18, 2005
    Replies:
    4
    Views:
    991
    jamyers
    Mar 19, 2005
  10. knucklebusted

    12 Bolt for 10 Bolt!

    knucklebusted, Apr 22, 2011
    Replies:
    0
    Views:
    606
    knucklebusted
    Apr 22, 2011
  11. TLUNDBOM

    12 bolt from 71 gs

    TLUNDBOM, Nov 3, 2007
    Replies:
    3
    Views:
    809
    TLUNDBOM
    Nov 8, 2007
  12. matt68gs400

    12 bolt gear codes

    matt68gs400, Oct 7, 2015
    Replies:
    0
    Views:
    479
    matt68gs400
    Oct 7, 2015
  13. 72sncpe

    12 Bolt Gear Identification

    72sncpe, May 9, 2010
    Replies:
    13
    Views:
    1,997
    72sncpe
    May 16, 2010
  14. TTNC

    12 bolt gears

    TTNC, Aug 5, 2006
    Replies:
    14
    Views:
    898
    monzaz
    Aug 8, 2006
  15. SC72Buick

    12 bolt head scratcher

    SC72Buick, Jan 30, 2006
    Replies:
    3
    Views:
    595
    GStage1
    Jan 30, 2006
  16. IDOXLR8

    12 Bolt Housing Needed

    IDOXLR8, May 26, 2009
    Replies:
    7
    Views:
    653
    thebuick
    Jun 4, 2009
  17. idahoskylark

    12 bolt id help

    idahoskylark, Feb 26, 2011
    Replies:
    8
    Views:
    2,686
    idahoskylark
    Feb 27, 2011
  18. 71PostCoupe

    12 Bolt Identification. HELP!!!!!!!

    71PostCoupe, Jan 19, 2007
    Replies:
    7
    Views:
    2,659
    copper128
    Jan 19, 2007
  19. benderbrew

    12 bolt in 65 lark not aligned correctly

    benderbrew, Nov 21, 2006
    Replies:
    18
    Views:
    1,110
    Sportwagon400
    Nov 24, 2006
  20. Buickcub

    12 bolt in 70 gs

    Buickcub, Dec 6, 2015
    Replies:
    5
    Views:
    1,097
    Buickcub
    Dec 10, 2015
  21. Sportlark64

    12 Bolt in a 64' Lark

    Sportlark64, Dec 27, 2006
    Replies:
    7
    Views:
    676
    dcarr
    Jan 15, 2007
  22. baker8884

    12 bolt in a 66' Lesabre?

    baker8884, Jan 16, 2007
    Replies:
    0
    Views:
    746
    baker8884
    Jan 16, 2007
  23. GMMADMAN

    12 bolt in my '66 Skylark

    GMMADMAN, Dec 8, 2018 ... 2
    Replies:
    34
    Views:
    2,466
    monzaz
    Jun 8, 2021
  24. Lemans1

    12 bolt in my 67 Sportwagon....what posi fits it??

    Lemans1, Jul 21, 2012
    Replies:
    10
    Views:
    1,321
    monzaz
    Jul 24, 2012
  25. 67fitz

    12 bolt in skylark ?

    67fitz, Feb 2, 2007
    Replies:
    7
    Views:
    1,398
    bobc455
    Feb 5, 2007
  26. Steve Craig

    12 bolt Olds Rear Question

    Steve Craig, Oct 8, 2004
    Replies:
    11
    Views:
    1,603
    quicksabre
    Oct 29, 2004
  27. wazzy3

    12 Bolt Open Conversion

    wazzy3, Dec 13, 2011
    Replies:
    2
    Views:
    922
    monzaz
    Dec 14, 2011
  28. Bad Buick

    12 bolt pattern

    Bad Buick, Apr 2, 2011
    Replies:
    7
    Views:
    1,431
    monzaz
    Apr 11, 2011
  29. SS/GN

    12 Bolt pinion seal leaks

    SS/GN, May 20, 2021
    Replies:
    15
    Views:
    391
    SS/GN
    Jun 1, 2021
  30. Brent

    12 Bolt Pinion Seal Question

    Brent, Jan 20, 2023
    Replies:
    3
    Views:
    330
    Brent
    Jan 20, 2023
  31. Bad Buick

    12 Bolt pinion yoke?

    Bad Buick, Mar 24, 2011
    Replies:
    5
    Views:
    1,330
    kenm455
    Mar 25, 2011
  32. Tom Miller

    12 bolt posi 3 series carrier with 33 spline side gears

    Tom Miller, Sep 27, 2015
    Replies:
    12
    Views:
    1,476
    Tom Miller
    Oct 3, 2015
  33. fatboybuick

    12 bolt posi from a pick up

    fatboybuick, Aug 27, 2008
    Replies:
    4
    Views:
    781
    fatboybuick
    Aug 27, 2008
  34. gsgeorge3

    12 bolt posi from my 69 g.s.400

    gsgeorge3, Oct 22, 2018 ... 2
    Replies:
    22
    Views:
    1,302
    monzaz
    Oct 28, 2018
  35. GSDrew

    12 bolt posi help

    GSDrew, Feb 21, 2009
    Replies:
    7
    Views:
    1,800
    GSDrew
    Feb 25, 2009
  36. Topless64-455

    12 bolt posi housing ID help

    Topless64-455, Nov 9, 2004
    Replies:
    9
    Views:
    1,192
    70GSXFAN
    Dec 1, 2008
  37. Topless64-455

    12 bolt posi is making some noise but not all the time???

    Topless64-455, Jun 24, 2013
    Replies:
    3
    Views:
    666
    Topless64-455
    Jul 3, 2013
  38. Topless64-455

    12 bolt posi pinion bearing ?

    Topless64-455, Nov 14, 2004
    Replies:
    7
    Views:
    866
    Topless64-455
    Dec 17, 2004
  39. Robs455

    12 Bolt posi safe or not?

    Robs455, Jan 20, 2017 ... 2
    Replies:
    24
    Views:
    2,520
    monzaz
    Jan 27, 2017
  40. mikethegoon

    12 bolt preload springs R/r

    mikethegoon, Mar 8, 2021 ... 2
    Replies:
    31
    Views:
    1,658
    BrianTrick
    Apr 6, 2021
  41. sweet70beast

    12 Bolt Q's

    sweet70beast, Nov 21, 2007
    Replies:
    3
    Views:
    1,065
    Hawken
    Nov 25, 2007
  42. sweet70beast

    12 bolt question

    sweet70beast, Jan 19, 2007
    Replies:
    1
    Views:
    1,431
    GStage1
    Jan 19, 2007
  43. buicfrank

    12 bolt rear axle oil seal

    buicfrank, Apr 2, 2010
    Replies:
    3
    Views:
    1,706
    buicfrank
    Apr 8, 2010
  44. gransportw

    12 bolt rear end

    gransportw, Apr 12, 2007
    Replies:
    4
    Views:
    2,417
    gransportw
    Apr 16, 2007
  45. Hawaii69

    12 Bolt rearend build

    Hawaii69, Feb 22, 2005
    Replies:
    5
    Views:
    825
    Hawaii69
    Feb 22, 2005
  46. tlivingd

    12 bolt rebuild?

    tlivingd, Sep 29, 2004
    Replies:
    2
    Views:
    725
    TomGS72
    Sep 30, 2004
  47. Chi-Town67

    12 bolt ring gear ID

    Chi-Town67, May 27, 2019
    Replies:
    2
    Views:
    599
    Chi-Town67
    May 28, 2019
  48. jmccart

    12 bolt ring/pinion inedtification help

    jmccart, Apr 20, 2006
    Replies:
    4
    Views:
    598
    jmccart
    Apr 23, 2006
  49. BillyG

    12 bolt rubber pinion snubber location?

    BillyG, Aug 13, 2007
    Replies:
    15
    Views:
    1,786
    Geoemojr
    Aug 29, 2007
  50. agetnt9

    12 Bolt Swap

    agetnt9, Jun 17, 2011
    Replies:
    12
    Views:
    1,270
    agetnt9
    Jun 18, 2011
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