Got gears?

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

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  1. poison heart

    1959 Posi

    poison heart, Jul 23, 2007
    Replies:
    0
    Views:
    373
    poison heart
    Jul 23, 2007
  2. poison heart

    1959 BOP Third Member Swap

    poison heart, Feb 14, 2009
    Replies:
    3
    Views:
    919
    poison heart
    Feb 14, 2009
  3. century66r

    1955 century rear end

    century66r, Feb 18, 2007
    Replies:
    1
    Views:
    1,279
    oPh
    Feb 19, 2007
  4. 1drwgn

    1410 Flange yoke

    1drwgn, Oct 29, 2009
    Replies:
    7
    Views:
    2,423
    1drwgn
    Nov 4, 2009
  5. 7 skylark 1

    1350 yokes & u-joints ?

    7 skylark 1, Dec 15, 2006
    Replies:
    2
    Views:
    753
    7 skylark 1
    Dec 16, 2006
  6. agetnt9

    1350 rear yoke to smaller drive shaft end

    agetnt9, Jun 13, 2018
    Replies:
    4
    Views:
    335
    agetnt9
    Jun 13, 2018
  7. Nothingface5384

    12bolt centersection welded to 10bolt housing

    Nothingface5384, Mar 18, 2011
    Replies:
    11
    Views:
    1,356
    monzaz
    Apr 10, 2011
  8. Michael Evans

    12-bolt locker unit

    Michael Evans, Apr 8, 2011
    Replies:
    6
    Views:
    842
    Michael Evans
    Apr 9, 2011
  9. Kevin.1

    12-bolt compatibility?

    Kevin.1, Feb 7, 2006
    Replies:
    1
    Views:
    529
    10sec 455
    Feb 7, 2006
  10. 69GS400s

    12-bolt Chevy Posi gear swap ???

    69GS400s, Feb 1, 2007
    Replies:
    10
    Views:
    3,455
    72GSX4ME
    Feb 2, 2007
  11. Poconobuick

    12 Detroit Locker Problem

    Poconobuick, Sep 17, 2008
    Replies:
    0
    Views:
    497
    Poconobuick
    Sep 17, 2008
  12. scubasteve455

    12 bolts install question

    scubasteve455, Apr 29, 2018
    Replies:
    12
    Views:
    633
    scubasteve455
    May 3, 2018
  13. Woodie

    12 bolt/9"...

    Woodie, Feb 12, 2007
    Replies:
    3
    Views:
    619
    Stage2Scott
    Feb 14, 2007
  14. 67RivRacer

    12 Bolt, 28 Spline?

    67RivRacer, May 25, 2008
    Replies:
    11
    Views:
    2,939
    Bad Buick
    Jun 25, 2008
  15. mk333

    12 bolt WT code?

    mk333, Aug 3, 2009
    Replies:
    2
    Views:
    510
    mk333
    Aug 3, 2009
  16. bugeater

    12 Bolt with 4.88's

    bugeater, Aug 24, 2012
    Replies:
    8
    Views:
    1,231
    gstewart
    Aug 27, 2012
  17. idahoskylark

    12 bolt w no mounts - repairable??

    idahoskylark, Jul 14, 2011
    Replies:
    12
    Views:
    2,238
    idahoskylark
    Jul 27, 2011
  18. sean Buick 76

    12 bolt vs 8.5

    sean Buick 76, Nov 9, 2021
    Replies:
    10
    Views:
    796
    monzaz
    Dec 3, 2021
  19. DelmarHD

    12 bolt versus 10 bolt driveshaft length

    DelmarHD, Apr 10, 2007
    Replies:
    1
    Views:
    1,695
    oPh
    Apr 10, 2007
  20. knucklebusted

    12 Bolt Value?

    knucklebusted, Jun 5, 2011
    Replies:
    8
    Views:
    1,448
    monzaz
    Jun 7, 2011
  21. rack-attack

    12 bolt type 0

    rack-attack, Oct 21, 2009 ... 2
    Replies:
    25
    Views:
    7,756
    stage1 Rick
    Nov 20, 2009
  22. rmstg2

    12 Bolt to 8.5 10 Bolt Swap

    rmstg2, Feb 11, 2012
    Replies:
    6
    Views:
    916
    monzaz
    Feb 13, 2012
  23. 1970 GS 4spd

    12 bolt swap into a 73 Century

    1970 GS 4spd, Oct 5, 2008
    Replies:
    6
    Views:
    519
    monzaz
    Oct 6, 2008
  24. Idaho67gs400

    12 bolt swap in 67 GS 400

    Idaho67gs400, Jan 8, 2012
    Replies:
    10
    Views:
    1,485
    wkillgs
    Jan 10, 2012
  25. agetnt9

    12 Bolt Swap

    agetnt9, Jun 17, 2011
    Replies:
    12
    Views:
    1,272
    agetnt9
    Jun 18, 2011
  26. racenu

    12 bolt swap

    racenu, Jan 3, 2007
    Replies:
    10
    Views:
    1,522
    Sportwagon400
    Jan 10, 2007
  27. stged455

    12 bolt swap

    stged455, Jun 4, 2011
    Replies:
    2
    Views:
    632
    stged455
    Jun 5, 2011
  28. stged455

    12 bolt swap

    stged455, Jun 4, 2011
    Replies:
    6
    Views:
    973
    knucklebusted
    Jun 5, 2011
  29. BillyG

    12 bolt rubber pinion snubber location?

    BillyG, Aug 13, 2007
    Replies:
    15
    Views:
    1,789
    Geoemojr
    Aug 29, 2007
  30. jmccart

    12 bolt ring/pinion inedtification help

    jmccart, Apr 20, 2006
    Replies:
    4
    Views:
    600
    jmccart
    Apr 23, 2006
  31. Chi-Town67

    12 bolt ring gear ID

    Chi-Town67, May 27, 2019
    Replies:
    2
    Views:
    600
    Chi-Town67
    May 28, 2019
  32. tlivingd

    12 bolt rebuild?

    tlivingd, Sep 29, 2004
    Replies:
    2
    Views:
    726
    TomGS72
    Sep 30, 2004
  33. Hawaii69

    12 Bolt rearend build

    Hawaii69, Feb 22, 2005
    Replies:
    5
    Views:
    825
    Hawaii69
    Feb 22, 2005
  34. gransportw

    12 bolt rear end

    gransportw, Apr 12, 2007
    Replies:
    4
    Views:
    2,418
    gransportw
    Apr 16, 2007
  35. buicfrank

    12 bolt rear axle oil seal

    buicfrank, Apr 2, 2010
    Replies:
    3
    Views:
    1,707
    buicfrank
    Apr 8, 2010
  36. sweet70beast

    12 bolt question

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

    12 Bolt Q's

    sweet70beast, Nov 21, 2007
    Replies:
    3
    Views:
    1,067
    Hawken
    Nov 25, 2007
  38. mikethegoon

    12 bolt preload springs R/r

    mikethegoon, Mar 8, 2021 ... 2
    Replies:
    31
    Views:
    1,659
    BrianTrick
    Apr 6, 2021
  39. Robs455

    12 Bolt posi safe or not?

    Robs455, Jan 20, 2017 ... 2
    Replies:
    24
    Views:
    2,521
    monzaz
    Jan 27, 2017
  40. Topless64-455

    12 bolt posi pinion bearing ?

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

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

    Topless64-455, Jun 24, 2013
    Replies:
    3
    Views:
    669
    Topless64-455
    Jul 3, 2013
  42. Topless64-455

    12 bolt posi housing ID help

    Topless64-455, Nov 9, 2004
    Replies:
    9
    Views:
    1,194
    70GSXFAN
    Dec 1, 2008
  43. GSDrew

    12 bolt posi help

    GSDrew, Feb 21, 2009
    Replies:
    7
    Views:
    1,800
    GSDrew
    Feb 25, 2009
  44. gsgeorge3

    12 bolt posi from my 69 g.s.400

    gsgeorge3, Oct 22, 2018 ... 2
    Replies:
    22
    Views:
    1,302
    monzaz
    Oct 28, 2018
  45. fatboybuick

    12 bolt posi from a pick up

    fatboybuick, Aug 27, 2008
    Replies:
    4
    Views:
    783
    fatboybuick
    Aug 27, 2008
  46. Tom Miller

    12 bolt posi 3 series carrier with 33 spline side gears

    Tom Miller, Sep 27, 2015
    Replies:
    12
    Views:
    1,478
    Tom Miller
    Oct 3, 2015
  47. Bad Buick

    12 Bolt pinion yoke?

    Bad Buick, Mar 24, 2011
    Replies:
    5
    Views:
    1,332
    kenm455
    Mar 25, 2011
  48. Brent

    12 Bolt Pinion Seal Question

    Brent, Jan 20, 2023
    Replies:
    3
    Views:
    331
    Brent
    Jan 20, 2023
  49. SS/GN

    12 Bolt pinion seal leaks

    SS/GN, May 20, 2021
    Replies:
    15
    Views:
    391
    SS/GN
    Jun 1, 2021
  50. Bad Buick

    12 bolt pattern

    Bad Buick, Apr 2, 2011
    Replies:
    7
    Views:
    1,432
    monzaz
    Apr 11, 2011
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