Got gears?

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

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  1. Roadmaster49

    1966 GS Posi Options

    Roadmaster49, Feb 2, 2010
    Replies:
    14
    Views:
    2,591
    monzaz
    Feb 5, 2010
  2. Nailhead

    3.42 Ring and Pinion Set--Used On???

    Nailhead, Dec 21, 2006
    Replies:
    8
    Views:
    2,591
    monzaz
    Jul 20, 2007
  3. Briz

    Gots crunchy magnetic stuff in my rear end

    Briz, Jul 9, 2017 ... 2
    Replies:
    39
    Views:
    2,585
    Briz
    Aug 26, 2017
  4. evil16v

    pinion depth gauge.

    evil16v, Feb 10, 2008
    Replies:
    7
    Views:
    2,573
    evil16v
    Feb 15, 2008
  5. 72buicklark

    what weight gear oil in rear end?

    72buicklark, Jul 6, 2016
    Replies:
    10
    Views:
    2,570
    PCUB
    Jul 8, 2016
  6. laferte6

    help with finding ring gear and pinion 8.875 with 10 bolt cover

    laferte6, Mar 11, 2006
    Replies:
    7
    Views:
    2,570
    laferte6
    Mar 14, 2006
  7. Curmudgeon

    How Low a gear ratio can you go on a 350 and still drive on the HWY?

    Curmudgeon, Aug 19, 2013
    Replies:
    18
    Views:
    2,563
    No Lift
    Aug 29, 2013
  8. 67BS4DHT

    67 Buick Skylark ST300 Problem

    67BS4DHT, May 14, 2016
    Replies:
    14
    Views:
    2,560
    My3Buicks
    Oct 19, 2016
  9. dentboy

    Will a 12 bolt from a 70 monte carlo fit???

    dentboy, Dec 6, 2012
    Replies:
    11
    Views:
    2,559
    angelisbell
    Dec 14, 2012
  10. staged73

    Auto to 4 speed

    staged73, May 17, 2016
    Replies:
    15
    Views:
    2,549
    cstanley-gs
    May 19, 2016
  11. mike moyer

    70 8.2 cone type posi

    mike moyer, Dec 18, 2014
    Replies:
    16
    Views:
    2,542
    monzaz
    Feb 5, 2015
  12. f16dcc431

    power trax

    f16dcc431, Apr 7, 2012 ... 2
    Replies:
    27
    Views:
    2,538
    69GS400s
    Apr 13, 2012
  13. floyzepp

    Axles - 1970 Skylark Custom

    floyzepp, Dec 15, 2008
    Replies:
    16
    Views:
    2,533
    floyzepp
    Jan 12, 2009
  14. PatricksBuick

    1967 Special rear wheel bearing

    PatricksBuick, Nov 30, 2011
    Replies:
    14
    Views:
    2,532
    doc
    May 6, 2012
  15. buicks

    What are my options? I have a 2.56 rearend.

    buicks, Oct 8, 2012 ... 2
    Replies:
    22
    Views:
    2,525
    LARRY70GS
    Oct 12, 2012
  16. Robs455

    12 Bolt posi safe or not?

    Robs455, Jan 20, 2017 ... 2
    Replies:
    24
    Views:
    2,516
    monzaz
    Jan 27, 2017
  17. JimJames

    Squeak near front u-joint area when moving in reverse

    JimJames, Sep 11, 2009
    Replies:
    10
    Views:
    2,486
    Supershafts
    Sep 16, 2009
  18. hollowstylez21

    Rear End

    hollowstylez21, Dec 10, 2010
    Replies:
    12
    Views:
    2,484
    SportWagonGS
    Mar 7, 2011
  19. eagleguy

    Best overall gear for street and highway

    eagleguy, Jan 22, 2010
    Replies:
    10
    Views:
    2,481
    MattRush10
    Feb 8, 2010
  20. speedtigger

    Small block more rear wheel torque than big block!

    speedtigger, Jun 25, 2010
    Replies:
    13
    Views:
    2,481
    sean Buick 76
    Jul 4, 2010
  21. Opa

    Yukon Posi or Eaton Detroit Locker

    Opa, Jan 12, 2020 ... 2
    Replies:
    37
    Views:
    2,467
    monzaz
    Jan 18, 2020
  22. SEP455

    Posi units?

    SEP455, Sep 11, 2009
    Replies:
    6
    Views:
    2,463
    Nothingface5384
    Sep 16, 2009
  23. MikeyC

    3.73's in '68 Riv...How?

    MikeyC, Jul 10, 2011
    Replies:
    19
    Views:
    2,456
    turbobill
    Aug 1, 2011
  24. GMMADMAN

    12 bolt in my '66 Skylark

    GMMADMAN, Dec 8, 2018 ... 2
    Replies:
    34
    Views:
    2,450
    monzaz
    Jun 8, 2021
  25. WhiteRiviera

    Spool and gears on 8.5 rear?

    WhiteRiviera, Jan 3, 2013 ... 2
    Replies:
    24
    Views:
    2,449
    300sbb_overkill
    Jan 8, 2013
  26. eagleguy

    Posi rear lube question

    eagleguy, Jun 3, 2012
    Replies:
    19
    Views:
    2,433
    eagleguy
    Jun 24, 2012
  27. buicklesabre

    Rebuild 8.2 in 68 LeSabre

    buicklesabre, Feb 23, 2010 ... 2
    Replies:
    22
    Views:
    2,429
    buicklesabre
    Mar 22, 2010
  28. 1drwgn

    1410 Flange yoke

    1drwgn, Oct 29, 2009
    Replies:
    7
    Views:
    2,418
    1drwgn
    Nov 4, 2009
  29. gransportw

    12 bolt rear end

    gransportw, Apr 12, 2007
    Replies:
    4
    Views:
    2,415
    gransportw
    Apr 16, 2007
  30. BWINN519

    Axle broke.. split

    BWINN519, May 28, 2014
    Replies:
    16
    Views:
    2,412
    TheSilverBuick
    Jun 25, 2014
  31. idahoskylark

    powertrax lock right for 8.2??

    idahoskylark, Jul 2, 2011
    Replies:
    4
    Views:
    2,412
    sootie007
    Jul 5, 2011
  32. M Billings

    8.2 spacer question

    M Billings, Nov 5, 2004
    Replies:
    10
    Views:
    2,407
    BrianTrick
    Apr 18, 2021
  33. LOLO

    66 Skylark Axle Bearings

    LOLO, Apr 21, 2005
    Replies:
    10
    Views:
    2,405
    BuickWidow
    Apr 22, 2005
  34. mercer

    Troubleshooting Advice - knocking sound from rear end

    mercer, Aug 11, 2010
    Replies:
    8
    Views:
    2,400
    mercer
    Aug 13, 2010
  35. MattRush10

    What size is my rear end?

    MattRush10, Nov 28, 2009
    Replies:
    8
    Views:
    2,396
    MattRush10
    Nov 28, 2009
  36. Dan-K

    3.42 drive gear for TH400

    Dan-K, Mar 10, 2013
    Replies:
    5
    Views:
    2,396
    Dan-K
    Mar 11, 2013
  37. bobc455

    Weird rear wheel movement

    bobc455, Apr 15, 2009 ... 2
    Replies:
    22
    Views:
    2,391
    deekster_caddy
    May 3, 2009
  38. CJay

    U joints- nothing is ever easy

    CJay, Jan 9, 2022 ... 2 3
    Replies:
    40
    Views:
    2,388
    Deogi2
    Dec 11, 2022
  39. 12lives

    Need GM part number - posi additive

    12lives, Oct 16, 2010
    Replies:
    6
    Views:
    2,376
    12lives
    Oct 29, 2010
  40. jamhdit

    gear venders

    jamhdit, Mar 9, 2008 ... 2
    Replies:
    25
    Views:
    2,358
    nekkidhillbilly
    Apr 25, 2008
  41. mummy68

    Is this too much Gear for my application. Street Car

    mummy68, Nov 15, 2017 ... 2
    Replies:
    29
    Views:
    2,352
    Mart
    Jan 7, 2018
  42. chippewa388

    86 regal limited stock gear?

    chippewa388, Jul 5, 2010
    Replies:
    4
    Views:
    2,348
    monzaz
    Jul 11, 2010
  43. Tim N.

    8.2 to 8.5 swap

    Tim N., Feb 11, 2013
    Replies:
    14
    Views:
    2,347
    techg8
    Mar 10, 2013
  44. maverick455

    Buick Rear End Identification

    maverick455, Apr 22, 2011
    Replies:
    4
    Views:
    2,341
    DaWildcat
    Apr 22, 2011
  45. wortex_rpm

    73 riviera needs posi for the 9 3/8 diff

    wortex_rpm, Aug 31, 2010
    Replies:
    7
    Views:
    2,336
    DaWildcat
    Sep 9, 2010
  46. agetnt9

    bullet proof 12 bolt chevy rear

    agetnt9, Apr 4, 2013
    Replies:
    9
    Views:
    2,336
    69GS400s
    Apr 10, 2013
  47. online170

    Really strange failure, your thoughts? Trying to make sure it doesnt happen again

    online170, Dec 15, 2010 ... 2
    Replies:
    28
    Views:
    2,332
    26Troadster
    Jan 3, 2011
  48. Gulfgears

    Narrowing a 8.5" rear

    Gulfgears, Mar 7, 2016 ... 2
    Replies:
    22
    Views:
    2,330
    BrianTrick
    Mar 13, 2016
  49. supcarbob

    remove axles 1970 GS

    supcarbob, Aug 31, 2012
    Replies:
    15
    Views:
    2,326
    Jaysimon
    Aug 7, 2014
  50. gary sell

    Price for wheel bearings ?

    gary sell, May 7, 2017 ... 2
    Replies:
    23
    Views:
    2,323
    Bens99gtp
    May 13, 2017
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