Got gears?

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

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  1. bignastyGS

    Big tire guys what gear ratio are you running?

    bignastyGS, Jan 14, 2021 ... 2
    Replies:
    22
    Views:
    1,738
    sean Buick 76
    Jul 25, 2022
  2. Chuck George

    Will it fit?

    Chuck George, Jan 16, 2021 ... 2
    Replies:
    22
    Views:
    2,137
    LARRY70GS
    Apr 20, 2021
  3. OldDrummer55

    1972 Riviera Rear End

    OldDrummer55, Dec 16, 2020 ... 2
    Replies:
    22
    Views:
    1,674
    Luxus
    Feb 12, 2021
  4. BubbaJ

    slip n slide

    BubbaJ, Mar 8, 2020 ... 2
    Replies:
    22
    Views:
    1,616
    kingdaddycreel
    Jul 3, 2020
  5. Jukka Haapanen

    67 riviera 3.07 posi

    Jukka Haapanen, Jun 10, 2020 ... 2
    Replies:
    22
    Views:
    1,035
    Lucy Fair
    Jun 25, 2020
  6. gsgeorge3

    12 bolt posi from my 69 g.s.400

    gsgeorge3, Oct 22, 2018 ... 2
    Replies:
    22
    Views:
    1,297
    monzaz
    Oct 28, 2018
  7. gsjake

    did a 75 riv come with a 9 3/8 rear?

    gsjake, May 16, 2012 ... 2
    Replies:
    22
    Views:
    4,615
    limited_driver
    Jun 16, 2016
  8. Smartin

    Stock 70 Skylark 2.73 8.2 rear - what options for gear upgrades do I have?

    Smartin, May 22, 2016 ... 2
    Replies:
    22
    Views:
    1,732
    bignastyGS
    May 28, 2016
  9. Gulfgears

    Narrowing a 8.5" rear

    Gulfgears, Mar 7, 2016 ... 2
    Replies:
    22
    Views:
    2,333
    BrianTrick
    Mar 13, 2016
  10. 70aqua_custom

    Factory Buick Rear Differentials, What Were They Thinking?

    70aqua_custom, Dec 8, 2015 ... 2
    Replies:
    22
    Views:
    11,635
    monzaz
    Dec 17, 2015
  11. Gary Farmer

    GM 7.5 -is it worth it?

    Gary Farmer, Mar 11, 2013 ... 2
    Replies:
    22
    Views:
    5,883
    nekkidhillbilly
    Mar 13, 2013
  12. buicks

    What are my options? I have a 2.56 rearend.

    buicks, Oct 8, 2012 ... 2
    Replies:
    22
    Views:
    2,543
    LARRY70GS
    Oct 12, 2012
  13. DauntlessV8

    3.42 or 3.73

    DauntlessV8, Feb 8, 2012 ... 2
    Replies:
    22
    Views:
    3,945
    sriley531
    Feb 22, 2012
  14. 68custom

    1968 rear end?

    68custom, Oct 12, 2011 ... 2
    Replies:
    22
    Views:
    7,717
    OhioGS400
    Oct 23, 2011
  15. haganlee

    What cruizing RPM is good for a big block???

    haganlee, Nov 30, 2010 ... 2
    Replies:
    22
    Views:
    6,393
    Gary Bohannon
    Dec 2, 2010
  16. buicklesabre

    Rebuild 8.2 in 68 LeSabre

    buicklesabre, Feb 23, 2010 ... 2
    Replies:
    22
    Views:
    2,435
    buicklesabre
    Mar 22, 2010
  17. eagleguy

    Switching gear ratio / going to posi?

    eagleguy, Jan 18, 2010 ... 2
    Replies:
    22
    Views:
    2,658
    eagleguy
    Jan 23, 2010
  18. bobc455

    Weird rear wheel movement

    bobc455, Apr 15, 2009 ... 2
    Replies:
    22
    Views:
    2,398
    deekster_caddy
    May 3, 2009
  19. BQUICK

    Gov-lock

    BQUICK, Aug 30, 2022 ... 2
    Replies:
    23
    Views:
    988
    Bens99gtp
    Jan 31, 2023
  20. TTNC

    Upgrading Chevy 12 bolt to 9 inch

    TTNC, Oct 12, 2020 ... 2
    Replies:
    23
    Views:
    1,074
    TTNC
    Oct 14, 2020
  21. Jake G'S 455

    Replacement rear for my 69 GS

    Jake G'S 455, Mar 28, 2020 ... 2
    Replies:
    23
    Views:
    1,120
    BrianTrick
    Jul 11, 2020
  22. BigSmo54

    Best ratio for my wants?

    BigSmo54, Feb 3, 2018 ... 2
    Replies:
    23
    Views:
    1,918
    87GN_70GS
    Feb 7, 2018
  23. gary sell

    Price for wheel bearings ?

    gary sell, May 7, 2017 ... 2
    Replies:
    23
    Views:
    2,328
    Bens99gtp
    May 13, 2017
  24. cstanley-gs

    Cost of rear bearings and seals?

    cstanley-gs, Mar 30, 2013 ... 2
    Replies:
    23
    Views:
    4,300
    cstanley-gs
    May 16, 2013
  25. Andy69

    driveline vibration

    Andy69, Mar 3, 2013 ... 2
    Replies:
    23
    Views:
    4,362
    Andy69
    Mar 6, 2013
  26. RATCHETMASTER

    1970 Buick lesabre 455 with posi. Square cover. What years use this type of rear?

    RATCHETMASTER, Apr 11, 2012 ... 2
    Replies:
    23
    Views:
    4,591
    Jim Jones
    Jun 1, 2012
  27. MartinNr5

    What axle is this?

    MartinNr5, Apr 7, 2010 ... 2
    Replies:
    23
    Views:
    3,232
    MartinNr5
    Apr 28, 2010
  28. 73buick73

    riviera rear

    73buick73, Mar 4, 2007 ... 2
    Replies:
    23
    Views:
    4,989
    1drwgn
    Nov 8, 2009
  29. EveeSTi

    How crazy are 4.56 for street driving?

    EveeSTi, Oct 25, 2007 ... 2
    Replies:
    23
    Views:
    1,892
    mltdwn12
    Nov 3, 2007
  30. 19Skylark68 455

    y all the 10 bolts?

    19Skylark68 455, Jan 27, 2007 ... 2
    Replies:
    23
    Views:
    2,604
    oPh
    Feb 12, 2007
  31. landshark

    67 GS axle Bearings

    landshark, Nov 18, 2005 ... 2
    Replies:
    23
    Views:
    7,111
    diver
    Dec 9, 2005
  32. BuickGS65

    '66 Chevlle 10 bolt into '65 Skylark -- gears?

    BuickGS65, Sep 18, 2004 ... 2
    Replies:
    23
    Views:
    4,381
    BuickGS65
    Mar 27, 2005
  33. 70gsrick

    Need help with powertrax

    70gsrick, Jan 8, 2005 ... 2
    Replies:
    23
    Views:
    1,772
    70gsrick
    Mar 11, 2005
  34. jimmy

    Setting up 9" rear, is this the correct wear pattern?

    jimmy, Jan 1, 2005 ... 2
    Replies:
    23
    Views:
    2,029
    jimmy
    Jan 21, 2005
  35. koserv

    67 GS gear

    koserv, Sep 8, 2021 ... 2
    Replies:
    24
    Views:
    891
    koserv
    Sep 13, 2021
  36. Canadian GS 350

    1972 8.5 inch axles?

    Canadian GS 350, Jan 25, 2019 ... 2
    Replies:
    24
    Views:
    2,130
    Canadian GS 350
    Apr 27, 2019
  37. StagedCat

    Performance 8.5 input needed....

    StagedCat, Mar 10, 2018 ... 2
    Replies:
    24
    Views:
    1,292
    BrianTrick
    Mar 15, 2018
  38. Esasky's85GN

    Is this rear end worth changing out my stock 8.5 10 bolt

    Esasky's85GN, Sep 20, 2017 ... 2
    Replies:
    24
    Views:
    1,660
    monzaz
    Sep 27, 2017
  39. Robs455

    12 Bolt posi safe or not?

    Robs455, Jan 20, 2017 ... 2
    Replies:
    24
    Views:
    2,516
    monzaz
    Jan 27, 2017
  40. 71Skylark1384

    Got a Gear dilemma.

    71Skylark1384, Jan 28, 2016 ... 2
    Replies:
    24
    Views:
    2,648
    LARRY70GS
    Jan 31, 2016
  41. WhiteRiviera

    Spool and gears on 8.5 rear?

    WhiteRiviera, Jan 3, 2013 ... 2
    Replies:
    24
    Views:
    2,455
    300sbb_overkill
    Jan 8, 2013
  42. James McD

    Help with 10 bolt 8.2 Posi, what can I do?

    James McD, Jun 13, 2011 ... 2
    Replies:
    24
    Views:
    4,418
    James McD
    Aug 29, 2011
  43. eagleguy

    Just installed a 3.08 posi, break in question?

    eagleguy, Mar 27, 2010 ... 2
    Replies:
    24
    Views:
    3,113
    Jeff T
    Apr 2, 2010
  44. garybuick

    RPM, Gear Ratio, Speed Calculation Tool

    garybuick, Aug 22, 2007 ... 2
    Replies:
    24
    Views:
    4,576
    pabstman
    Jan 15, 2010
  45. cstanley-gs

    Why does gear oil stink?

    cstanley-gs, Aug 16, 2006 ... 2
    Replies:
    24
    Views:
    1,705
    CTX-SLPR
    Sep 19, 2006
  46. bigtimer24

    Gear questions?

    bigtimer24, Apr 8, 2023 ... 2
    Replies:
    25
    Views:
    1,949
    BrianTrick
    Apr 27, 2023
  47. rkammer

    Do I really need new axles?

    rkammer, Feb 13, 2023 ... 2
    Replies:
    25
    Views:
    1,114
    rkammer
    Feb 14, 2023
  48. V6sleeper

    Rear id 70 Sportwagon

    V6sleeper, Sep 17, 2021 ... 2
    Replies:
    25
    Views:
    914
    BrianTrick
    Sep 21, 2021
  49. Lory's 350

    Rearend identification

    Lory's 350, Mar 31, 2020 ... 2
    Replies:
    25
    Views:
    1,495
    monzaz
    Apr 10, 2020
  50. mkeeler

    What rear end to use ?

    mkeeler, Feb 15, 2011 ... 2
    Replies:
    25
    Views:
    7,717
    monzaz
    May 22, 2019
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