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Forum: Allison 5 & 6 Speed

Allison 5 & 6 Speed Transmission for Duramax and 8.1L gas.

  1. Exclamation Sticky Thread Sticky: Allison 6spd TCM versions

    Started by GMPX, May 23rd, 2017
    • Replies: 1
    • Views: 17,209
    Move'n Up
    May 23rd, 2017 Go to last post

  1. Cool 600 rpm slip limit solved!!!! OS 25941752

    Started by mitchd, May 31st, 2013
    14 Pages •
    1 2 3 ... 14
    15 Attachment(s)
    • Replies: 137
    • Views: 96,471
    X-Force
    November 30th, 2022 Go to last post

  2. A40 Full Read option

    Started by GMPX, March 9th, 2015
    8 Pages •
    1 2 3 ... 8
    6 Attachment(s)
    • Replies: 73
    • Views: 61,488
    Rthms20
    December 17th, 2019 Go to last post

  3. 5 to 6 speed conversion

    Started by 02CCSB, September 9th, 2012
    3 Pages •
    1 2 3
    • Replies: 25
    • Views: 57,894
    killerbee
    March 23rd, 2022 Go to last post

  4. converter will not lock under wot

    Started by camcojb, April 18th, 2009
    10 Pages •
    1 2 3 ... 10
    3 Attachment(s)
    • Replies: 99
    • Views: 54,701
    MaxPF
    April 12th, 2011 Go to last post

  5. A50/T14 confusion

    Started by comnrailpwr, March 21st, 2017
    5 Pages •
    1 2 3 ... 5
    1 Attachment(s)
    • Replies: 47
    • Views: 48,574
    Chuck CoW
    December 7th, 2017 Go to last post

  6. 2011+ TCM Full flashing

    Started by rcr1978, December 29th, 2014
    6 Pages •
    1 2 3 ... 6
    2 Attachment(s)
    • Replies: 57
    • Views: 42,507
    vectorbundle
    November 7th, 2015 Go to last post

  7. 2009 duramax tcm tuning

    Started by dgdyno, October 4th, 2009
    4 Pages •
    1 2 3 ... 4
    • Replies: 36
    • Views: 28,669
    duramaximizer
    June 1st, 2010 Go to last post

  8. 6 Spd upshift torque reduction

    Started by HTMtrSprt, April 27th, 2013
    5 Pages •
    1 2 3 ... 5
    • Replies: 46
    • Views: 27,341
    LB72004
    October 12th, 2013 Go to last post

  9. Allison TCM stand alone tuning

    Started by MaxPF, July 24th, 2010
    2 Pages •
    1 2
    • Replies: 13
    • Views: 23,303
    MaxPF
    August 1st, 2010 Go to last post

  10. A50 line pressure control

    Started by DURAtotheMAX, June 2nd, 2016
    3 Pages •
    1 2 3
    • Replies: 28
    • Views: 21,406
    jgooch1548
    March 24th, 2017 Go to last post

  11. Help with TCM tuning on 2010 LMM code says doesnt support A50

    Started by darins28, April 6th, 2011
    3 Pages •
    1 2 3
    • Replies: 23
    • Views: 20,712
    trippleh
    April 24th, 2013 Go to last post

  12. 6 Speed Allison TCM's

    Started by Cougar281, January 11th, 2010
    2 Pages •
    1 2
    • Replies: 11
    • Views: 20,089
    killerbee
    February 15th, 2011 Go to last post

  13. 2015.5+ Allison TCM

    Started by DURAtotheMAX, January 8th, 2015
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 14
    • Views: 19,142
    Dmaxink
    February 12th, 2016 Go to last post

  14. Adjusting Allison Shift Times

    Started by Sparky8370, June 24th, 2008
    3 Pages •
    1 2 3
    5 Attachment(s)
    • Replies: 22
    • Views: 19,007
    The Neens
    June 30th, 2008 Go to last post

  15. Need to hold 4th gear for dyno

    Started by samdweezel05, July 20th, 2008
    3 Pages •
    1 2 3
    • Replies: 24
    • Views: 18,605
    Madspeed
    July 1st, 2011 Go to last post

  16. 6 Speed Allison Tables

    Started by LBZRCKS, July 12th, 2008
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 22
    • Views: 18,534
    sdwolff98
    January 27th, 2015 Go to last post

  17. A50 tuning

    Started by Dragbear, June 19th, 2014
    3 Pages •
    1 2 3
    • Replies: 27
    • Views: 18,066
    Dmaxink
    November 7th, 2014 Go to last post

  18. how to tune allison tcm with efi

    Started by kingboydmax, May 2nd, 2009
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 11
    • Views: 17,987
    NCRay
    February 1st, 2016 Go to last post

  19. TCC lockup again

    Started by DURAtotheMAX, October 23rd, 2009
    2 Pages •
    1 2
    • Replies: 17
    • Views: 16,948
    Nmband13
    April 23rd, 2011 Go to last post

  20. Allison VIN flashing

    Started by MaxPF, February 10th, 2011
    2 Pages •
    1 2
    • Replies: 19
    • Views: 16,459
    Road
    January 11th, 2019 Go to last post
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