Got gears?

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

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  1. scubasteve455

    Are 12 bolts disappearing?

    scubasteve455, Mar 31, 2018
    Replies:
    15
    Views:
    1,220
    Buicksky
    Apr 1, 2018
  2. GMMADMAN

    Quick Performance posi

    GMMADMAN, Mar 30, 2018
    Replies:
    12
    Views:
    1,860
    BrianTrick
    Apr 10, 2018
  3. 70skylark350

    stupid brake question. help me!!!!

    70skylark350, Mar 27, 2018 ... 2
    Replies:
    27
    Views:
    1,648
    bostoncat68
    May 9, 2018
  4. Bens99gtp

    8.5 axle tube bracing

    Bens99gtp, Mar 20, 2018
    Replies:
    4
    Views:
    508
    BrianTrick
    Mar 21, 2018
  5. Bryon

    1962 Buick 9 3/8 rear ends

    Bryon, Mar 17, 2018 ... 2
    Replies:
    36
    Views:
    5,201
    monzaz
    Nov 25, 2023
  6. Dwayne B

    Speedo reading wrong

    Dwayne B, Mar 16, 2018
    Replies:
    11
    Views:
    702
    john.schaefer77
    Mar 17, 2018
  7. GMMADMAN

    gear ratio for my build

    GMMADMAN, Mar 13, 2018
    Replies:
    18
    Views:
    1,728
    monzaz
    Apr 22, 2018
  8. steve murray

    Auburn slipping

    steve murray, Mar 10, 2018
    Replies:
    6
    Views:
    672
    steve murray
    Mar 13, 2018
  9. StagedCat

    Performance 8.5 input needed....

    StagedCat, Mar 10, 2018 ... 2
    Replies:
    24
    Views:
    1,290
    BrianTrick
    Mar 15, 2018
  10. GMMADMAN

    rear end swap

    GMMADMAN, Feb 26, 2018 ... 2
    Replies:
    28
    Views:
    3,092
    monzaz
    Jun 19, 2019
  11. CJay

    80W-90 GL-5 differential gear oil questions

    CJay, Feb 20, 2018
    Replies:
    17
    Views:
    1,765
    monzaz
    Feb 22, 2018
  12. Me235

    64 Buick rear axle faq??

    Me235, Feb 20, 2018
    Replies:
    4
    Views:
    908
    monzaz
    Feb 21, 2018
  13. BuickV8Mike

    Stock clutch fork with clevis?

    BuickV8Mike, Feb 9, 2018
    Replies:
    8
    Views:
    574
    BrianTrick
    Feb 10, 2018
  14. craigman

    Which rear end?

    craigman, Feb 3, 2018
    Replies:
    14
    Views:
    702
    monzaz
    Feb 6, 2018
  15. BigSmo54

    Best ratio for my wants?

    BigSmo54, Feb 3, 2018 ... 2
    Replies:
    23
    Views:
    1,907
    87GN_70GS
    Feb 7, 2018
  16. Yoccm1

    8.75 rear axle parts needed

    Yoccm1, Jan 28, 2018
    Replies:
    6
    Views:
    849
    monzaz
    Jan 29, 2018
  17. BuickRacer69

    8.5 axle

    BuickRacer69, Jan 25, 2018
    Replies:
    13
    Views:
    724
    monzaz
    Jan 29, 2018
  18. Briz

    Something broke

    Briz, Jan 20, 2018 ... 2 3
    Replies:
    48
    Views:
    4,050
    monzaz
    Mar 5, 2018
  19. darklark

    80Turbo ta diff

    darklark, Jan 10, 2018
    Replies:
    5
    Views:
    456
    darklark
    Jan 10, 2018
  20. agetnt9

    True Trac

    agetnt9, Jan 5, 2018
    Replies:
    6
    Views:
    583
    agetnt9
    Jan 8, 2018
  21. MarcoD

    66 Wildcat - 9-3/8" rear end

    MarcoD, Jan 1, 2018 ... 2 3
    Replies:
    41
    Views:
    6,563
    Wild_Cat
    Aug 17, 2021
  22. inda_bebe

    66 rearend

    inda_bebe, Dec 31, 2017
    Replies:
    7
    Views:
    907
    inda_bebe
    Jan 8, 2018
  23. HotWired

    Need carrier shims for 8.2

    HotWired, Dec 31, 2017
    Replies:
    12
    Views:
    927
    monzaz
    Jan 9, 2018
  24. hugger

    Richmond install kit for 12bolt

    hugger, Dec 20, 2017
    Replies:
    3
    Views:
    587
    hugger
    Dec 21, 2017
  25. jaye

    U-joint/drive shaft question

    jaye, Dec 7, 2017
    Replies:
    5
    Views:
    733
    Weekender
    Jan 25, 2018
  26. inda_bebe

    66 skylark posi

    inda_bebe, Nov 30, 2017
    Replies:
    5
    Views:
    665
    monzaz
    Dec 18, 2017
  27. Dale G

    How much is it worth

    Dale G, Nov 30, 2017 ... 2 3
    Replies:
    50
    Views:
    4,044
    Dale G
    Dec 17, 2017
  28. Jason Hutchison

    1971 Buick GS 455 Questions

    Jason Hutchison, Nov 26, 2017
    Replies:
    9
    Views:
    1,452
    monzaz
    Nov 30, 2017
  29. Peelinoffwtheceilingoff

    66' Buick Rearend Swap

    Peelinoffwtheceilingoff, Nov 18, 2017
    Replies:
    12
    Views:
    794
    monzaz
    Nov 22, 2017
  30. agetnt9

    locker 913A481

    agetnt9, Nov 16, 2017
    Replies:
    9
    Views:
    574
    monzaz
    Nov 20, 2017
  31. mummy68

    Is this too much Gear for my application. Street Car

    mummy68, Nov 15, 2017 ... 2
    Replies:
    29
    Views:
    2,350
    Mart
    Jan 7, 2018
  32. sporty-to-GN

    Setting up a new 8.5 gear set and carrier...

    sporty-to-GN, Nov 10, 2017
    Replies:
    10
    Views:
    834
    sporty-to-GN
    Dec 18, 2017
  33. dmfconsult

    1978 Estate Wagon Rear End Ratio

    dmfconsult, Nov 7, 2017
    Replies:
    5
    Views:
    565
    monzaz
    Nov 20, 2017
  34. Skippy597

    1996 Caprice classic police rearend

    Skippy597, Nov 2, 2017
    Replies:
    10
    Views:
    763
    monzaz
    Dec 3, 2017
  35. mummy68

    68 skylark 8.2 Rear End Gear swap suggestions

    mummy68, Oct 30, 2017
    Replies:
    3
    Views:
    475
    mummy68
    Oct 30, 2017
  36. bamboo72

    Rear differential difference.

    bamboo72, Oct 27, 2017
    Replies:
    4
    Views:
    708
    bamboo72
    Nov 1, 2017
  37. ceas350

    72 rear end how much can it be shortened

    ceas350, Oct 25, 2017 ... 2
    Replies:
    25
    Views:
    1,600
    ceas350
    Oct 28, 2017
  38. robert v

    1965 skylark rear end swap question.

    robert v, Oct 23, 2017
    Replies:
    13
    Views:
    1,894
    Donuts & Peelouts
    Nov 10, 2017
  39. nick21

    Driveshaft length Question

    nick21, Oct 15, 2017
    Replies:
    11
    Views:
    1,295
    BrianTrick
    Oct 24, 2017
  40. Omar33

    63 Buick skylark rearend

    Omar33, Oct 8, 2017
    Replies:
    10
    Views:
    2,037
    Sportwagon400
    Jan 28, 2018
  41. Groucho70

    Rear end identification help

    Groucho70, Oct 5, 2017
    Replies:
    13
    Views:
    2,166
    monzaz
    Oct 10, 2017
  42. agetnt9

    will 2001 Blazer diffs & 3.42 gear set fit?

    agetnt9, Oct 3, 2017
    Replies:
    12
    Views:
    576
    monzaz
    Oct 4, 2017
  43. RobertRobitaile

    9 3/8 Posi

    RobertRobitaile, Sep 30, 2017
    Replies:
    6
    Views:
    761
    64 wildcat conv
    Oct 18, 2017
  44. azstage1

    Drive shaft size/weight

    azstage1, Sep 30, 2017
    Replies:
    5
    Views:
    561
    BrianTrick
    Oct 1, 2017
  45. Johnny Angel

    Will 12 bolt Chevelle rear fit my 1970 GS?

    Johnny Angel, Sep 25, 2017
    Replies:
    4
    Views:
    681
    knucklebusted
    Sep 25, 2017
  46. Romel

    8.5 Rearend Gear Interchange Issue

    Romel, Sep 25, 2017 ... 2
    Replies:
    29
    Views:
    1,879
    monzaz
    Oct 3, 2017
  47. 64 Hardtop

    Gear change or converter reworked?

    64 Hardtop, Sep 22, 2017
    Replies:
    9
    Views:
    790
    knucklebusted
    Oct 30, 2017
  48. Esasky's85GN

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

    Esasky's85GN, Sep 20, 2017 ... 2
    Replies:
    24
    Views:
    1,656
    monzaz
    Sep 27, 2017
  49. Tom Miller

    12 bolt 31 spline side gears available?

    Tom Miller, Sep 19, 2017
    Replies:
    3
    Views:
    506
    Tom Miller
    Sep 20, 2017
  50. 70skylark350

    BRAKE DRUM QUESTION.

    70skylark350, Sep 17, 2017
    Replies:
    13
    Views:
    689
    monzaz
    Sep 24, 2017
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