Got gears?

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

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  1. lwalling

    So..I have a 9 3/8 12 bolt rear..options?

    lwalling, May 14, 2019
    Replies:
    11
    Views:
    710
    Smartin
    May 20, 2019
  2. afracer

    Which wear pattern looks better?

    afracer, May 5, 2019 ... 2
    Replies:
    20
    Views:
    1,343
    monzaz
    May 27, 2019
  3. Canadian GS 350

    The diff is back in the car

    Canadian GS 350, May 1, 2019
    Replies:
    2
    Views:
    522
    Canadian GS 350
    May 1, 2019
  4. efogs400

    Grinding in reverse?

    efogs400, Apr 27, 2019
    Replies:
    5
    Views:
    586
    monzaz
    May 2, 2019
  5. Dr. Evil

    Early 8.2 posi unit?

    Dr. Evil, Apr 25, 2019
    Replies:
    13
    Views:
    990
    monzaz
    May 6, 2019
  6. Flint Rex

    Crush sleeve fit

    Flint Rex, Apr 25, 2019
    Replies:
    3
    Views:
    721
    monzaz
    Apr 25, 2019
  7. Romel

    Posi units

    Romel, Apr 10, 2019
    Replies:
    9
    Views:
    1,003
    monzaz
    Apr 12, 2019
  8. 71 GS

    Changing to a possi drive differential

    71 GS, Apr 5, 2019
    Replies:
    15
    Views:
    1,913
    PCUB
    Apr 6, 2019
  9. Cutlass

    Slip yoke for TH200-4R

    Cutlass, Mar 26, 2019
    Replies:
    5
    Views:
    551
    Ken Warner
    Mar 28, 2019
  10. Flint Rex

    Help identifying rear end.

    Flint Rex, Mar 25, 2019
    Replies:
    4
    Views:
    541
    Flint Rex
    Mar 26, 2019
  11. Vito DAmbrosio

    1969 Performance (Posi) Axle vs Regular Posi Differential

    Vito DAmbrosio, Mar 25, 2019
    Replies:
    5
    Views:
    460
    Vito DAmbrosio
    Mar 26, 2019
  12. Canadian GS 350

    Will a 71-72 10 bolt fit a 1966 GTO?

    Canadian GS 350, Mar 15, 2019
    Replies:
    15
    Views:
    624
    Canadian GS 350
    Mar 24, 2019
  13. Canadian GS 350

    I know I have 3:42’s....what does the rest of the axle tube code mean?

    Canadian GS 350, Mar 10, 2019
    Replies:
    12
    Views:
    700
    DasRottweiler
    Mar 13, 2019
  14. Canadian GS 350

    U joint type on a 1972 GS 350 auto drive shaft ?

    Canadian GS 350, Mar 5, 2019
    Replies:
    6
    Views:
    579
    monzaz
    Mar 7, 2019
  15. cluxford

    Centre Bearing Experts - Step Inside

    cluxford, Mar 4, 2019
    Replies:
    6
    Views:
    853
    cluxford
    Apr 1, 2019
  16. Steve73GS

    What could it be in 73?

    Steve73GS, Mar 3, 2019
    Replies:
    15
    Views:
    771
    k.pascoe
    Mar 12, 2019
  17. 1969RIVI

    68 Rear end

    1969RIVI, Feb 22, 2019
    Replies:
    7
    Views:
    601
    1969RIVI
    Feb 23, 2019
  18. Dave Blower

    8.5 with bolt in axles

    Dave Blower, Feb 7, 2019
    Replies:
    15
    Views:
    1,142
    monzaz
    Apr 5, 2019
  19. Troys69GS

    Unconventional 69 Rear disc build

    Troys69GS, Jan 30, 2019
    Replies:
    19
    Views:
    911
    1969RIVI
    Mar 1, 2019
  20. BrianTrick

    So,you got a deal,right?

    BrianTrick, Jan 29, 2019
    Replies:
    5
    Views:
    666
    Gulfgears
    Jan 30, 2019
  21. gsla72

    Speedometer Gear Help

    gsla72, Jan 27, 2019
    Replies:
    7
    Views:
    1,018
    gsla72
    Jan 29, 2019
  22. Canadian GS 350

    1972 8.5 inch axles?

    Canadian GS 350, Jan 25, 2019 ... 2
    Replies:
    24
    Views:
    2,132
    Canadian GS 350
    Apr 27, 2019
  23. Dr. Roger

    Replacing pinion bearings on 8.5 diff

    Dr. Roger, Jan 25, 2019 ... 2
    Replies:
    31
    Views:
    1,376
    monzaz
    Feb 4, 2019
  24. CanadianBird

    BOP 8.2 gear question.

    CanadianBird, Jan 22, 2019
    Replies:
    3
    Views:
    674
    CanadianBird
    Jan 22, 2019
  25. BigTodd

    Help with my 72 Rear end

    BigTodd, Jan 11, 2019
    Replies:
    7
    Views:
    532
    Bens99gtp
    Jan 12, 2019
  26. Bill Nuttle

    1964 Cutlass Axle

    Bill Nuttle, Jan 7, 2019
    Replies:
    10
    Views:
    661
    monzaz
    Jan 8, 2019
  27. ravensbud

    What should be the width of my new rear end?

    ravensbud, Dec 29, 2018
    Replies:
    10
    Views:
    1,105
    monzaz
    Dec 31, 2018
  28. Airtight1975

    72 riviera axle width

    Airtight1975, Dec 29, 2018
    Replies:
    1
    Views:
    618
    monzaz
    Jan 1, 2019
  29. Tom Miller

    Best place & price 8.5 posi rebuild kits?

    Tom Miller, Dec 24, 2018
    Replies:
    5
    Views:
    500
    monzaz
    Dec 26, 2018
  30. bignastyGS

    1971 8.5 axle flanges..Same bolt pattern as Olds/Pontiacs for our Buicks?

    bignastyGS, Dec 23, 2018
    Replies:
    7
    Views:
    427
    monzaz
    Dec 25, 2018
  31. Donnie

    8.2 and drag radials

    Donnie, Dec 17, 2018
    Replies:
    14
    Views:
    669
    BUQUICK
    Dec 20, 2018
  32. Floydoroid

    76 Skylark X-Body

    Floydoroid, Dec 15, 2018
    Replies:
    10
    Views:
    569
    monzaz
    Dec 28, 2018
  33. Christopher Spouse Drew

    Finding a 10 bolt 8.5 posi In salvage yards

    Christopher Spouse Drew, Dec 15, 2018 ... 2 3
    Replies:
    56
    Views:
    6,923
    BrianTrick
    Jan 30, 2019
  34. PeterRomvig

    8.5 10 bolt axle bearing/seal/ retainer where to buy

    PeterRomvig, Dec 14, 2018
    Replies:
    5
    Views:
    604
    monzaz
    Dec 14, 2018
  35. eric6659

    Yukon Posi

    eric6659, Dec 12, 2018
    Replies:
    3
    Views:
    573
    monzaz
    Dec 13, 2018
  36. GMMADMAN

    12 bolt in my '66 Skylark

    GMMADMAN, Dec 8, 2018 ... 2
    Replies:
    34
    Views:
    2,463
    monzaz
    Jun 8, 2021
  37. Christopher Spouse Drew

    Identifying a 10 bolt 8.5 posi

    Christopher Spouse Drew, Dec 4, 2018 ... 2
    Replies:
    33
    Views:
    2,997
    monzaz
    Dec 16, 2018
  38. BuickRacer69

    Chevy 12 bolt with 9 inch ends

    BuickRacer69, Dec 3, 2018
    Replies:
    14
    Views:
    1,536
    monzaz
    Dec 6, 2018
  39. tminihan

    TH 400 Install in 70 GS

    tminihan, Dec 2, 2018
    Replies:
    11
    Views:
    695
    Utah455
    Jan 30, 2019
  40. Bill Nuttle

    What gears?

    Bill Nuttle, Nov 30, 2018
    Replies:
    17
    Views:
    909
    monzaz
    Dec 1, 2018
  41. DasRottweiler

    8.625/30 spline going in a 71' 8.5

    DasRottweiler, Nov 13, 2018
    Replies:
    10
    Views:
    778
    monzaz
    Nov 15, 2018
  42. BrianTrick

    1970 8.2” Buick Street/strip 3:42 posi

    BrianTrick, Nov 11, 2018
    Replies:
    5
    Views:
    657
    BrianTrick
    Nov 12, 2018
  43. Rich Merjanian

    Need Help Identifying 8.2” Rear Please

    Rich Merjanian, Nov 2, 2018 ... 2
    Replies:
    37
    Views:
    1,996
    monzaz
    Nov 7, 2018
  44. cluxford

    61 Rear Axle seals

    cluxford, Oct 29, 2018
    Replies:
    5
    Views:
    406
    cluxford
    Oct 31, 2018
  45. josehf34

    some help changing gears on a 8.2

    josehf34, Oct 28, 2018 ... 2 3
    Replies:
    42
    Views:
    2,679
    josehf34
    Dec 3, 2018
  46. darren fitzgerald

    Needing advice to narrow or new rear end for 77 century

    darren fitzgerald, Oct 28, 2018
    Replies:
    6
    Views:
    478
    monzaz
    Nov 8, 2018
  47. Dr. Evil

    71 8.5 rear worth $250?

    Dr. Evil, Oct 28, 2018 ... 2
    Replies:
    21
    Views:
    1,362
    monzaz
    Dec 3, 2018
  48. Christopher Spouse Drew

    Gear oil for a 8.5 diff?

    Christopher Spouse Drew, Oct 25, 2018
    Replies:
    5
    Views:
    722
    Bens99gtp
    Oct 30, 2018
  49. gsgeorge3

    12 bolt posi from my 69 g.s.400

    gsgeorge3, Oct 22, 2018 ... 2
    Replies:
    22
    Views:
    1,300
    monzaz
    Oct 28, 2018
  50. rdirks

    8.2 or 8.5?

    rdirks, Oct 19, 2018
    Replies:
    9
    Views:
    926
    PGSS
    Oct 22, 2018
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