Got gears?

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

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  1. Gulfgears

    3.23:1 gear set

    Gulfgears, Jun 2, 2008
    Replies:
    17
    Views:
    3,840
    monzaz
    Jul 15, 2008
  2. msc66

    3.36 12 bolt?

    msc66, Jan 8, 2005
    Replies:
    7
    Views:
    727
    msc66
    Jan 8, 2005
  3. lwalling

    3.42 9 3/8 71+ gears WTB

    lwalling, Nov 1, 2019
    Replies:
    9
    Views:
    974
    monzaz
    Jan 6, 2020
  4. Dan-K

    3.42 drive gear for TH400

    Dan-K, Mar 10, 2013
    Replies:
    5
    Views:
    2,404
    Dan-K
    Mar 11, 2013
  5. suntreemcanic

    3.42 Eaton Posi.

    suntreemcanic, Dec 11, 2019
    Replies:
    15
    Views:
    1,191
    suntreemcanic
    Feb 13, 2020
  6. 65wildcater

    3.42 gears not compatable with 3.07 carrier?

    65wildcater, Sep 3, 2013
    Replies:
    17
    Views:
    1,743
    CameoInvicta
    Sep 8, 2013
  7. DauntlessV8

    3.42 or 3.73

    DauntlessV8, Feb 8, 2012 ... 2
    Replies:
    22
    Views:
    3,951
    sriley531
    Feb 22, 2012
  8. Stagedcoach71

    3.42 or 3.73 gearrs for street? Last call before I order

    Stagedcoach71, Oct 27, 2016
    Replies:
    10
    Views:
    2,078
    Bigpig455
    Oct 28, 2016
  9. sd-slider

    3.42 posi in a stock 64 Skylark rear?

    sd-slider, Feb 16, 2010
    Replies:
    2
    Views:
    1,165
    LARRY70GS
    Feb 16, 2010
  10. wilson1

    3.42 rear end

    wilson1, Mar 11, 2013
    Replies:
    10
    Views:
    1,592
    sean Buick 76
    Mar 16, 2013
  11. wilson1

    3.42 rear end

    wilson1, Mar 11, 2013
    Replies:
    0
    Views:
    484
    wilson1
    Mar 11, 2013
  12. Nailhead

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

    Nailhead, Dec 21, 2006
    Replies:
    8
    Views:
    2,597
    monzaz
    Jul 20, 2007
  13. nailheadina67

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

    nailheadina67, May 26, 2007
    Replies:
    11
    Views:
    3,211
    GotTattooz
    Aug 20, 2007
  14. skylark300

    3.55 in 2.78 rear end?

    skylark300, Sep 26, 2004
    Replies:
    4
    Views:
    937
    projectman
    Sep 26, 2004
  15. nodak v8

    3.55 w/new t10?

    nodak v8, Jul 28, 2010
    Replies:
    4
    Views:
    968
    Tim
    Jul 29, 2010
  16. Weisguy184

    3.64 Gears

    Weisguy184, Jun 20, 2018
    Replies:
    14
    Views:
    1,017
    BrianTrick
    Jun 26, 2018
  17. gscalifornia

    3.73 or 3.90 is there a big difference

    gscalifornia, Jun 5, 2020 ... 2
    Replies:
    37
    Views:
    2,902
    LARRY70GS
    Jun 18, 2020
  18. 72GSX

    3.73 or 4.10 ???

    72GSX, Feb 13, 2006
    Replies:
    9
    Views:
    743
    Dubuick
    Feb 16, 2006
  19. 1967BuickGS400

    3.73 vs 3.42 at track?

    1967BuickGS400, Oct 6, 2011
    Replies:
    14
    Views:
    2,708
    462 Chevelle
    Oct 8, 2011
  20. Cali72's

    3.73's

    Cali72's, Jul 30, 2009
    Replies:
    5
    Views:
    745
    72gsBuick
    Jul 31, 2009
  21. MikeyC

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

    MikeyC, Jul 10, 2011
    Replies:
    19
    Views:
    2,471
    turbobill
    Aug 1, 2011
  22. SPYDER

    3.8l 3spd 10 bolt

    SPYDER, Oct 4, 2007
    Replies:
    3
    Views:
    764
    SPYDER
    Oct 5, 2007
  23. idahoskylark

    3.90 finally

    idahoskylark, Aug 3, 2021
    Replies:
    9
    Views:
    542
    idahoskylark
    Aug 8, 2021
  24. Bluzilla

    3.90 Gears

    Bluzilla, Mar 1, 2009
    Replies:
    11
    Views:
    1,583
    Bluzilla
    Apr 5, 2009
  25. buickmanmarty

    3.91 vs 2.93

    buickmanmarty, Feb 3, 2023 ... 2
    Replies:
    32
    Views:
    1,304
    bobc455
    Feb 9, 2023
  26. Kerry s.

    30-Spline Eaton Posi....

    Kerry s., Oct 10, 2005
    Replies:
    10
    Views:
    956
    GStage1
    Oct 13, 2005
  27. George D.

    3000 rpms at 55 mph with 15” rims? 3:42 or 3.64?

    George D., May 18, 2024 at 9:41 AM
    Replies:
    14
    Views:
    177
    Fred Hickey
    May 18, 2024 at 11:02 PM
  28. chrisc1541

    308 posi good on highway?

    chrisc1541, Jul 27, 2010
    Replies:
    13
    Views:
    4,995
    LARRY70GS
    Jul 27, 2010
  29. christy staunto

    323 possi

    christy staunto, Oct 6, 2012
    Replies:
    6
    Views:
    660
    SpecialWagon65
    Oct 7, 2012
  30. buickcoach

    33 spline posi unit? 9-3/8

    buickcoach, Oct 7, 2007
    Replies:
    10
    Views:
    1,405
    buickcoach
    Oct 8, 2007
  31. BIG FRANK JOHNSON

    342 10 bolt 00

    BIG FRANK JOHNSON, May 14, 2019
    Replies:
    13
    Views:
    1,157
    Hawken
    Sep 17, 2019
  32. startec

    342 posi

    startec, Sep 7, 2005
    Replies:
    2
    Views:
    712
    SpecialWagon65
    Sep 9, 2005
  33. moshen

    370 to 350 gears ?

    moshen, Oct 15, 2011
    Replies:
    8
    Views:
    2,004
    moshen
    Oct 20, 2011
  34. Eric

    3:23 ring & pinion

    Eric, Jan 26, 2005
    Replies:
    1
    Views:
    582
    Todd69GS
    Jan 26, 2005
  35. MEXICOYA

    3:42 gears with a ST 300 2 spd on a 68 Skylark

    MEXICOYA, Oct 15, 2020
    Replies:
    13
    Views:
    1,199
    TrunkMonkey
    Oct 26, 2020
  36. IDOXLR8

    3:42 Posi for Sale

    IDOXLR8, Jul 25, 2009
    Replies:
    3
    Views:
    596
    monzaz
    Jul 27, 2009
  37. BrianTrick

    3:55 ARE available for the 8.5" 10-bolt

    BrianTrick, Aug 28, 2017 ... 2
    Replies:
    27
    Views:
    1,754
    monzaz
    Sep 6, 2017
  38. stamper91

    3:73 vs 3:08 vs 3:23

    stamper91, Dec 21, 2016
    Replies:
    13
    Views:
    3,249
    Ken Mild
    Dec 27, 2016
  39. hugger

    3series or 4series 12bolt?

    hugger, Jun 2, 2017
    Replies:
    4
    Views:
    623
    monzaz
    Jun 10, 2017
  40. NZ GS 400

    4 Speed GS400 and 8.2 Posi with 4.11 gears?

    NZ GS 400, Jun 10, 2015
    Replies:
    9
    Views:
    931
    NZ GS 400
    Jun 11, 2015
  41. glen roberts

    4 speed shifter

    glen roberts, Mar 8, 2006
    Replies:
    0
    Views:
    396
    glen roberts
    Mar 8, 2006
  42. idahoskylark

    4.10 350/350 combo

    idahoskylark, Mar 23, 2010
    Replies:
    12
    Views:
    1,032
    455nglide
    Mar 24, 2010
  43. Tom Miller

    4.10 Gear needed for 8 1/2"/ trade 3.42 or 3.73's

    Tom Miller, Jan 1, 2008
    Replies:
    4
    Views:
    857
    Tom Miller
    Jan 4, 2008
  44. Mr. Wright

    4.11 posi

    Mr. Wright, Aug 1, 2009
    Replies:
    6
    Views:
    1,075
    techg8
    Aug 4, 2009
  45. chasanderson

    4.33 R&P 10 bolt 8.2

    chasanderson, Oct 28, 2008
    Replies:
    0
    Views:
    576
    chasanderson
    Oct 28, 2008
  46. TXGS

    410 gears on the Street

    TXGS, Mar 9, 2005 ... 2
    Replies:
    32
    Views:
    3,534
    MR.BUICK
    Mar 11, 2005
  47. BrianSkylark

    4:30 Gear Swap

    BrianSkylark, Oct 9, 2023
    Replies:
    12
    Views:
    521
    sore loser
    Oct 30, 2023
  48. Quick Buick

    4l80e with 3.08 gears opinions

    Quick Buick, Jul 15, 2023
    Replies:
    13
    Views:
    822
    alvareracing
    Nov 1, 2023
  49. century66r

    4link suspension info

    century66r, Sep 2, 2007
    Replies:
    0
    Views:
    407
    century66r
    Sep 2, 2007
  50. 71 Skylark 350

    5 on 5 rear disc brake conversion

    71 Skylark 350, Aug 28, 2011
    Replies:
    13
    Views:
    1,821
    GStage1
    Aug 31, 2011
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