The "Juice Box"

Ask all your auto trans and torque converter questions here.

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  1. Mr. Sunset
    Sticky

    Got jiggy with it. 4L80E behind 455 BBB

    Mr. Sunset, Oct 18, 2015 ... 5 6 7
    Replies:
    132
    Views:
    35,283
    Mr. Sunset
    Nov 8, 2022
  2. techg8
    Sticky

    TH350 / 200R4 swap summary

    techg8, Apr 11, 2009 ... 3 4 5
    Replies:
    87
    Views:
    37,238
    Slow200
    Apr 3, 2024
  3. Jim Weise
    Sticky

    VP converter- Trans visual ID guide

    Jim Weise, Dec 19, 2007 ... 2 3
    Replies:
    41
    Views:
    53,055
    TrunkMonkey
    May 12, 2023
  4. nailheadina67

    Official '66 SP 400 buildup thread

    nailheadina67, Mar 24, 2005 ... 7 8 9
    Replies:
    172
    Views:
    16,752
    Golden Oldie 65
    Apr 16, 2010
  5. Luxus

    TH400 trans rebuild

    Luxus, Sep 26, 2019 ... 6 7 8
    Replies:
    156
    Views:
    7,586
    Luxus
    May 1, 2020
  6. 1969RIVI

    Rebuilding my TH400

    1969RIVI, Jun 9, 2019 ... 5 6 7
    Replies:
    132
    Views:
    5,801
    1969RIVI
    Aug 14, 2019
  7. LARRY70GS

    Transmission Cooler Recommendation.

    LARRY70GS, Jul 28, 2015 ... 3 4 5
    Replies:
    96
    Views:
    26,344
    '72 Skylark Custom 4bbl
    Feb 16, 2020
  8. GRIMM

    Torque Converter Preference

    GRIMM, May 7, 2006 ... 3 4 5
    Replies:
    92
    Views:
    23,064
    speedtigger
    Dec 3, 2011
  9. Cutlass

    My 200-4R swap adventure (1970 Buick GS 455 TH400==>TH200-4R)

    Cutlass, Nov 4, 2018 ... 3 4 5
    Replies:
    81
    Views:
    6,869
    Cutlass
    Nov 25, 2019
  10. Donuts & Peelouts

    General trans?

    Donuts & Peelouts, Aug 15, 2017 ... 3 4 5
    Replies:
    81
    Views:
    7,174
    Donuts & Peelouts
    Feb 28, 2018
  11. BWINN519

    Turbo 400 to 200R4 trans Questions

    BWINN519, Nov 13, 2011 ... 3 4 5
    Replies:
    80
    Views:
    16,999
    brycenel
    Jul 18, 2015
  12. Kirk

    How to Rebuild a Super-Turbine 300 (ST-300) - A Pictoral Essay

    Kirk, Jan 16, 2006 ... 2 3 4
    Replies:
    79
    Views:
    28,563
    Mark300v8
    Apr 24, 2020
  13. 70rivme

    Project Riviera TH400 Rebuild

    70rivme, May 30, 2020 ... 2 3 4
    Replies:
    78
    Views:
    3,339
    70rivme
    Oct 12, 2020
  14. Canadian GS 350

    Turbo 350 or Turbo 400 for my GS?

    Canadian GS 350, Dec 15, 2019 ... 2 3 4
    Replies:
    69
    Views:
    3,661
    Canadian GS 350
    Apr 5, 2020
  15. Yardley

    New converter, now trans is weird

    Yardley, Apr 3, 2008 ... 2 3 4
    Replies:
    69
    Views:
    10,945
    grandville455
    Nov 16, 2009
  16. speedtigger

    Overdrive on the way for my 65!

    speedtigger, Jul 7, 2010 ... 2 3 4
    Replies:
    66
    Views:
    10,214
    nekkidhillbilly
    Oct 10, 2011
  17. 455 Powered

    Switch pitch question

    455 Powered, Mar 17, 2021 ... 2 3 4
    Replies:
    62
    Views:
    2,926
    ssmock
    Oct 5, 2021
  18. DauntlessSB92

    Extreme Automatics 2004-r Install

    DauntlessSB92, May 20, 2013 ... 2 3
    Replies:
    57
    Views:
    12,725
    DauntlessSB92
    Aug 14, 2016
  19. 70 gsconvt

    Installing a 200-4R in a 1970 GS, A Tutorial/Pictoral

    70 gsconvt, Mar 16, 2005 ... 2 3
    Replies:
    55
    Views:
    10,995
    70 gsconvt
    May 15, 2013
  20. 1969RIVI

    TH400 Rebuild kits

    1969RIVI, Dec 1, 2018 ... 2 3
    Replies:
    54
    Views:
    2,897
    1969RIVI
    May 13, 2019
  21. OZGS455

    GS455 Stage 1 Turbo 400 not kicking down

    OZGS455, Jul 8, 2018 ... 2 3
    Replies:
    54
    Views:
    4,234
    HeavensDevil
    Jul 21, 2018
  22. thood1954

    Forever a problem with ST300 (66 Skylark GS)

    thood1954, Nov 2, 2022 ... 2 3
    Replies:
    53
    Views:
    1,668
    thood1954
    Dec 17, 2022
  23. eagleguy

    Sudden tranny issues

    eagleguy, Nov 16, 2014 ... 2 3
    Replies:
    53
    Views:
    6,122
    eagleguy
    Feb 6, 2015
  24. rmstg2

    4L80E Info?

    rmstg2, Nov 29, 2008 ... 2 3
    Replies:
    51
    Views:
    10,703
    rmstg2
    Jan 3, 2009
  25. Donuts & Peelouts

    Needs some experienced eyes on this 400

    Donuts & Peelouts, Feb 11, 2018 ... 2 3
    Replies:
    50
    Views:
    3,396
    Bens99gtp
    Feb 18, 2018
  26. yachtsmanbill

    shifting issues

    yachtsmanbill, Jan 1, 2014 ... 2 3
    Replies:
    50
    Views:
    7,020
    TexasJohn55
    Jan 27, 2014
  27. 462 Chevelle

    th400 build

    462 Chevelle, Mar 28, 2012 ... 2 3
    Replies:
    50
    Views:
    7,535
    462 Chevelle
    Apr 15, 2012
  28. deluxe68

    TH350 or converter??

    deluxe68, Apr 1, 2014 ... 2 3
    Replies:
    49
    Views:
    8,871
    deluxe68
    Sep 23, 2016
  29. OldDrummer55

    Perplexing TH400 leak

    OldDrummer55, Sep 14, 2021 ... 2 3
    Replies:
    48
    Views:
    1,967
    TrunkMonkey
    Sep 8, 2023
  30. David Butts

    Governor info

    David Butts, Jun 24, 2010 ... 2 3
    Replies:
    47
    Views:
    13,714
    AlexK
    Apr 5, 2021
  31. tinker14bs

    How to ruin a 2004r in less than 10 minutes.....

    tinker14bs, Dec 3, 2015 ... 2 3
    Replies:
    47
    Views:
    18,722
    sean Buick 76
    Mar 15, 2016
  32. ronbz455

    Broke the 400!

    ronbz455, Jul 8, 2016 ... 2 3
    Replies:
    44
    Views:
    4,231
    ronbz455
    Aug 19, 2016
  33. Christopher Spouse Drew

    Average Th400 Rebuild Cost

    Christopher Spouse Drew, Sep 25, 2018 ... 2 3
    Replies:
    43
    Views:
    13,847
    hvramesq
    May 31, 2020
  34. thapachuco

    th400

    thapachuco, Jun 17, 2009 ... 2 3
    Replies:
    43
    Views:
    5,529
    mjordan13
    Aug 29, 2009
  35. simon1243

    tranny cooler

    simon1243, Apr 22, 2005 ... 2 3
    Replies:
    43
    Views:
    3,072
    GSX1
    May 17, 2005
  36. black70buick

    Breaking the code ... 4L80 or other late model trans -DIY TCM/TCU

    black70buick, Dec 25, 2015 ... 2 3
    Replies:
    42
    Views:
    8,832
    black70buick
    Dec 31, 2023
  37. 455Nick

    Which OD tranny?

    455Nick, Jan 29, 2010 ... 2 3
    Replies:
    42
    Views:
    8,278
    Phatteddie
    Mar 1, 2010
  38. STAGE III

    4L60E "Shouldn`t change the transmission fluid"???

    STAGE III, Jan 13, 2021 ... 2 3
    Replies:
    41
    Views:
    3,931
    Schurkey
    Feb 18, 2021
  39. Skippy597

    2200-2400 converter for stockish 350?

    Skippy597, Jan 16, 2018 ... 2 3
    Replies:
    41
    Views:
    5,890
    Taulbee2277
    Apr 20, 2018
  40. MDCH

    Drive shaft hitting body. Why?

    MDCH, Mar 21, 2013 ... 2 3
    Replies:
    41
    Views:
    6,208
    TheSilverBuick
    Mar 24, 2013
  41. nailheadpowered

    Help 400 Turbo Trans Issues In 65 Skylark!

    nailheadpowered, Jan 11, 2008 ... 2 3
    Replies:
    41
    Views:
    3,570
    Kqqlcat
    Jan 30, 2008
  42. 6D9

    S/P 400 vs Std 400 with Coan converter

    6D9, Nov 29, 2006 ... 2 3
    Replies:
    41
    Views:
    3,281
    norbs
    Jun 24, 2007
  43. ribuick

    Gear Vendors on 1969 t400

    ribuick, Aug 12, 2022 ... 2 3
    Replies:
    40
    Views:
    2,398
    LARRY70GS
    Apr 18, 2023
  44. Mr.Riviera

    1963 riviera 465 "transmission"

    Mr.Riviera, Sep 10, 2016 ... 2 3
    Replies:
    40
    Views:
    6,809
    d2_willys
    Aug 30, 2021
  45. 67 Electra Cvt

    '67 Electra ST400 won't shift from 1-2

    67 Electra Cvt, Apr 5, 2021 ... 2 3
    Replies:
    40
    Views:
    1,820
    67 Electra Cvt
    May 4, 2021
  46. whamo

    SP 400 shift troubles, desperate

    whamo, Mar 18, 2007 ... 2 3
    Replies:
    40
    Views:
    3,404
    gsgns4me
    Apr 17, 2007
  47. r0ckstarr

    Transmission problems, Part3 (this is getting rediculous)

    r0ckstarr, Mar 30, 2005 ... 2 3
    Replies:
    40
    Views:
    1,966
    r0ckstarr
    Apr 18, 2005
  48. techg8

    Torque converter failure mode?

    techg8, Jul 13, 2022 ... 2
    Replies:
    39
    Views:
    1,472
    DaWildcat
    Jul 28, 2022
  49. 69cloner

    Shift kits

    69cloner, Jun 6, 2006 ... 2
    Replies:
    39
    Views:
    2,557
    racerxjj67
    Jul 18, 2006
  50. Jonah Halbert

    1966 electra trans swap

    Jonah Halbert, Apr 7, 2018 ... 2
    Replies:
    38
    Views:
    3,300
    PGSS
    Apr 17, 2018
  51. rmstg2

    Bullet Proof Set Up Shot Down

    rmstg2, May 12, 2013 ... 2
    Replies:
    38
    Views:
    3,681
    D-Con
    May 17, 2013
  52. LARRY70GS

    Gear Vendors Overdrive is In!

    LARRY70GS, Jul 22, 2006 ... 2
    Replies:
    38
    Views:
    7,899
    Rodster
    Aug 1, 2006
  53. Co2

    Switch pitch wiring

    Co2, Jul 4, 2012 ... 2
    Replies:
    37
    Views:
    8,044
    gbsean
    Jul 11, 2012
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