Got gears?

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

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  1. BWINN519

    Best posi rear end for my 68 skylark

    BWINN519, Dec 10, 2008
    Replies:
    16
    Views:
    3,389
    monzaz
    Dec 18, 2008
  2. kick71

    8.5 "ON" code rear ?

    kick71, Nov 26, 2007 ... 2
    Replies:
    29
    Views:
    3,331
    copperheadgs1
    Dec 27, 2007
  3. rkammer

    Rear Axle ID

    rkammer, Apr 23, 2012
    Replies:
    10
    Views:
    3,325
    rkammer
    May 1, 2012
  4. andrewblaylock

    1970 skylark rear end swap

    andrewblaylock, Nov 11, 2008
    Replies:
    5
    Views:
    3,321
    70GSXFAN
    Nov 23, 2008
  5. GoldBoattail455

    Changing rear end fluid

    GoldBoattail455, Jul 26, 2006
    Replies:
    1
    Views:
    3,312
    oPh
    Jul 27, 2006
  6. chevyboy1

    1972 Buick Electra 225 Whats the Gear

    chevyboy1, Jan 2, 2008
    Replies:
    10
    Views:
    3,303
    73riv455
    Jan 24, 2008
  7. section8mainiac

    8.5 posi...2.41 in a 410408 N ???

    section8mainiac, Dec 10, 2010
    Replies:
    4
    Views:
    3,290
    section8mainiac
    Dec 11, 2010
  8. Torsdalen

    Rear axle parts, Buick GS455 stg1, OO type

    Torsdalen, Jan 9, 2016 ... 2
    Replies:
    20
    Views:
    3,285
    Torsdalen
    Jan 21, 2016
  9. jaystoy

    Torque converter advice????????

    jaystoy, Dec 30, 2005
    Replies:
    8
    Views:
    3,265
    Rick Finsta
    Feb 1, 2006
  10. Robs455

    Change the gear ratio

    Robs455, Oct 31, 2014 ... 2
    Replies:
    20
    Views:
    3,258
    staged70
    Nov 14, 2014
  11. Nez77

    1968/69 Skylark Rear Ends Identification

    Nez77, May 22, 2016
    Replies:
    4
    Views:
    3,258
    monzaz
    May 24, 2016
  12. LARRY70GS

    Axle endplay problem

    LARRY70GS, Jun 15, 2007
    Replies:
    11
    Views:
    3,255
    Floydsbuick
    Aug 15, 2007
  13. ravensbud

    Need some help with gear pattern

    ravensbud, Feb 28, 2016 ... 2
    Replies:
    35
    Views:
    3,241
    monzaz
    Apr 12, 2016
  14. 12lives

    Help ID rear end

    12lives, Jun 22, 2010
    Replies:
    11
    Views:
    3,240
    N360LL
    Jun 29, 2010
  15. Claus Moeller

    Will 10 bolt 8.2 bop hold up ?

    Claus Moeller, Nov 23, 2005
    Replies:
    9
    Views:
    3,225
    GranSportSedan
    Nov 26, 2005
  16. MartinNr5

    What axle is this?

    MartinNr5, Apr 7, 2010 ... 2
    Replies:
    23
    Views:
    3,223
    MartinNr5
    Apr 28, 2010
  17. Darron72Skylark

    8.5” BOP rebuild

    Darron72Skylark, Oct 13, 2019 ... 2 3
    Replies:
    58
    Views:
    3,220
    Darron72Skylark
    Dec 17, 2019
  18. stamper91

    3:73 vs 3:08 vs 3:23

    stamper91, Dec 21, 2016
    Replies:
    13
    Views:
    3,212
    Ken Mild
    Dec 27, 2016
  19. Doubleclutch

    Bad vibration???

    Doubleclutch, Jul 27, 2012
    Replies:
    18
    Views:
    3,210
    Ken Warner
    Sep 1, 2012
  20. andysam

    what differential is in my 71 skylark? is it a standard 'Chevy' 10 bolt?

    andysam, Dec 26, 2015
    Replies:
    13
    Views:
    3,203
    monzaz
    Dec 29, 2015
  21. regal81455

    Eaton Posi Or Powertrax No Slip Locker

    regal81455, May 20, 2009
    Replies:
    10
    Views:
    3,199
    regal81455
    May 21, 2009
  22. BWINN519

    Olds Posi ? Whatta u think ?

    BWINN519, Dec 15, 2011
    Replies:
    10
    Views:
    3,199
    rkammer
    Apr 9, 2016
  23. nailheadina67

    3.42 vs. 3.07......how much gas mileage would I gain?

    nailheadina67, May 26, 2007
    Replies:
    11
    Views:
    3,193
    GotTattooz
    Aug 20, 2007
  24. Buickcub

    Rear end identification

    Buickcub, Aug 12, 2009
    Replies:
    6
    Views:
    3,139
    Buickcub
    Aug 18, 2009
  25. afracer

    How to tell an original 4 speed car?

    afracer, Dec 12, 2015 ... 2
    Replies:
    29
    Views:
    3,122
    Chris Lott
    Dec 15, 2015
  26. Houndogforever

    So how much does a rear end build cost?

    Houndogforever, May 6, 2011
    Replies:
    7
    Views:
    3,115
    ThatsSpecial
    May 7, 2011
  27. eagleguy

    Just installed a 3.08 posi, break in question?

    eagleguy, Mar 27, 2010 ... 2
    Replies:
    24
    Views:
    3,101
    Jeff T
    Apr 2, 2010
  28. derek244

    1970 Buick Skylark....still no Posi option right?

    derek244, Mar 18, 2010
    Replies:
    11
    Views:
    3,096
    techg8
    Mar 21, 2010
  29. garybuick

    700 R4 with Gear Vendor Overdrive

    garybuick, Aug 24, 2007 ... 2
    Replies:
    30
    Views:
    3,088
    nekkidhillbilly
    Sep 22, 2007
  30. Try777

    Perfect gear ratio?

    Try777, Oct 2, 2010
    Replies:
    16
    Views:
    3,077
    Try777
    Oct 3, 2010
  31. GMMADMAN

    rear end swap

    GMMADMAN, Feb 26, 2018 ... 2
    Replies:
    28
    Views:
    3,073
    monzaz
    Jun 19, 2019
  32. ronbz455

    72 Skylark 10 Bolt Converting to 86 Regal

    ronbz455, Jun 9, 2014 ... 2 3
    Replies:
    44
    Views:
    3,065
    TexasT
    Jul 19, 2014
  33. gs motor 72conv

    Gears 2.56 vs 3.55 / 3.73 ? street and strip use

    gs motor 72conv, Oct 11, 2015
    Replies:
    10
    Views:
    3,065
    monzaz
    Oct 13, 2015
  34. MARK CAMALIERI

    Need rear 3rd member advise, 342 posi

    MARK CAMALIERI, May 13, 2011
    Replies:
    19
    Views:
    3,060
    MARK CAMALIERI
    May 17, 2011
  35. Brian

    Which is best--Motive or Richmond Gears?

    Brian, Mar 3, 2006
    Replies:
    16
    Views:
    3,056
    sd-slider
    Aug 6, 2011
  36. gsnewman

    I think I've got a Pontiac axle in my Buick

    gsnewman, Jan 1, 2012
    Replies:
    13
    Views:
    3,041
    monzaz
    Jan 2, 2012
  37. WhiteRiviera

    Mini-spool for BOP 10 Bolt?

    WhiteRiviera, Dec 19, 2012
    Replies:
    9
    Views:
    3,023
    buicksstage1
    Jan 14, 2013
  38. papa roger

    Best ring and pinion manufacturer ?

    papa roger, Apr 4, 2015
    Replies:
    16
    Views:
    3,005
    DavidC77
    Apr 10, 2015
  39. eljefe98

    8.2 vs 8.5 rearend

    eljefe98, Mar 2, 2007
    Replies:
    6
    Views:
    2,985
    eljefe98
    Mar 7, 2007
  40. Gary Bohannon

    71-72 8.5" wheel bearing puzzle

    Gary Bohannon, Jun 14, 2011
    Replies:
    14
    Views:
    2,980
    Gary Bohannon
    Nov 25, 2011
  41. Pelera

    Drive shaft bump

    Pelera, Aug 26, 2011 ... 2
    Replies:
    20
    Views:
    2,978
    GStage1
    Sep 7, 2011
  42. Bill9066

    1967 Chevelle Rear Axle Installed In a 1972 455 GS

    Bill9066, Oct 6, 2016 ... 2
    Replies:
    27
    Views:
    2,974
    Gary Bohannon
    Oct 22, 2016
  43. sd-slider

    Richmond Gear ID

    sd-slider, Aug 4, 2011
    Replies:
    3
    Views:
    2,950
    sd-slider
    Aug 10, 2011
  44. podski

    66 Cat rear end noise question

    podski, Jul 13, 2007 ... 2
    Replies:
    27
    Views:
    2,943
    70sLark
    Apr 14, 2009
  45. 68 Skylark cust

    Diff Gear change 3.08 to ??

    68 Skylark cust, Jun 23, 2021 ... 2 3 4
    Replies:
    62
    Views:
    2,934
    Fox's Den
    Jun 18, 2022
  46. SC72Buick

    Eaton 12 bolt posi rebuild questions

    SC72Buick, Jul 17, 2006
    Replies:
    3
    Views:
    2,925
    monzaz
    Jul 18, 2006
  47. 67RivRacer

    12 Bolt, 28 Spline?

    67RivRacer, May 25, 2008
    Replies:
    11
    Views:
    2,919
    Bad Buick
    Jun 25, 2008
  48. CruisinLou

    Correct speedometer gear?

    CruisinLou, Apr 29, 2018 ... 2 3
    Replies:
    43
    Views:
    2,909
    DasRottweiler
    Jul 22, 2018
  49. Christopher Spouse Drew

    Identifying a 10 bolt 8.5 posi

    Christopher Spouse Drew, Dec 4, 2018 ... 2
    Replies:
    33
    Views:
    2,901
    monzaz
    Dec 16, 2018
  50. Sabotage_666

    What's better for road racing?

    Sabotage_666, Mar 2, 2011
    Replies:
    19
    Views:
    2,891
    Sabotage_666
    Apr 5, 2011
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