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Forum: Duramax 6600

Welcome to the Internet's first Duramax 6600 diesel discussion forum for the LB7, LLY, LBZ, LMM, LML, LGH & L5P RPO code engines. Tips on performance, fuel economy, troubleshooting and more.

  1. Sticky Thread Sticky: Postings in the 'Duramax 6600' forum

    Started by Mark Rinker, 08-03-2007 07:58
    • Replies: 0
    • Views: 16,082
    Mark Rinker
    08-03-2007, 07:58 Go to last post

  2. Sticky Thread Sticky: P0087 fuel rail pressure low limp under high loads

    Started by Mark Rinker, 08-14-2009 20:26
    12 Pages •
    1 2 3 ... 12
    1 Attachment(s)
    • Replies: 223
    • Views: 338,826
    richp
    03-18-2018, 04:55 Go to last post

  3. Sticky Thread Sticky: New to Forum: How to tell type of Engine

    Started by bradjedis, 06-18-2007 10:41
    • Replies: 11
    • Views: 47,124
    Kennedy
    03-23-2010, 10:03 Go to last post

  4. Arrow Sticky Thread Sticky: LMM Fuel Economy

    Started by More Power, 04-11-2007 22:20
    5 Pages •
    1 2 3 ... 5
    • Replies: 98
    • Views: 152,406
    prairiewind
    01-24-2013, 06:38 Go to last post

  5. Arrow Sticky Thread Sticky: LML Fuel Economy

    Started by cowboywildbill, 04-29-2011 06:46
    • Replies: 18
    • Views: 53,944
    philstat
    07-13-2016, 07:27 Go to last post

  6. Sticky Thread Sticky: LBZ Fuel Mileage

    Started by Dannyboy, 03-10-2006 15:46
    9 Pages •
    1 2 3 ... 9
    • Replies: 168
    • Views: 200,982
    a5150nut
    12-30-2023, 15:22 Go to last post

  7. Sticky Thread Sticky: High Miles contest!

    Started by More Power, 11-29-2005 07:23
    6 Pages •
    1 2 3 ... 6
    6 Attachment(s)
    • Replies: 107
    • Views: 136,407
    R2b
    02-29-2024, 13:38 Go to last post

  8. Sticky Thread Sticky: Gasoline in my 6.6 Duramax

    Started by Javy, 06-01-2006 18:36
    2 Pages •
    1 2
    • Replies: 32
    • Views: 91,467
    DmaxMaverick
    05-21-2020, 11:15 Go to last post

  9. Sticky Thread Sticky: DTC Codes-Definitions

    Started by MAV, 09-27-2003 06:24
    • Replies: 7
    • Views: 49,665
    DieselDavy
    09-07-2017, 16:45 Go to last post

  10. Sticky Thread Sticky: Dexcool vs. other coolants

    Started by TomJ01, 12-01-2010 16:01
    • Replies: 13
    • Views: 84,029
    More Power
    10-28-2020, 13:47 Go to last post

  11. Thumbs up Sticky Thread Sticky: D Max Express Fuel Mileage

    Started by wurk_truk, 04-28-2006 21:40
    • Replies: 10
    • Views: 49,952
    phill0072
    06-21-2008, 16:16 Go to last post

  12. Sticky Thread Sticky: Additional fuel filtration / injector replacement poll

    Started by Mark Rinker, 08-16-2008 09:10
    2 Pages •
    1 2
    • Replies: 29
    • Views: 47,799
    EdHale
    10-04-2020, 03:07 Go to last post

  13. Poll Sticky Thread Sticky: Poll: 2004.5+ LLY Duramax Fuel Economy Poll

    Started by More Power, 12-31-2004 14:27
    6 Pages •
    1 2 3 ... 6
    • Replies: 117
    • Views: 138,966
    wmholden
    10-29-2018, 12:13 Go to last post

  14. Thumbs up Sticky Thread Sticky: 2004 Duramax 6.6 Liter Diesel Engine Assembly Torque Specifications

    Started by RXTII, 12-27-2007 20:02
    • Replies: 5
    • Views: 33,207
    More Power
    06-03-2022, 09:59 Go to last post

  15. Poll Sticky Thread Sticky: Poll: 2001-early 2004 LB7 Duramax Fuel Economy Poll

    Started by More Power, 12-31-2004 14:35
    6 Pages •
    1 2 3 ... 6
    • Replies: 113
    • Views: 210,552
    chessy56
    01-19-2016, 14:50 Go to last post

  16. Sticky Thread Sticky: 2001 LB7 fuel system/limp mode problem SOLVED

    Started by maverick2, 04-09-2010 12:46
    • Replies: 18
    • Views: 76,465
    Kennedy
    10-23-2017, 07:57 Go to last post

  1. Wow..after replacing my T-stats..

    Started by spongebob, 04-30-2024 13:45
    • Replies: 5
    • Views: 243
    More Power
    05-07-2024, 09:18 Go to last post

  2. Someone tell me why

    Started by spongebob, 03-25-2024 12:04
    • Replies: 5
    • Views: 2,334
    More Power
    04-03-2024, 10:20 Go to last post

  3. rebuilt or new injectors..

    Started by spongebob, 12-27-2023 11:57
    • Replies: 5
    • Views: 1,550
    More Power
    01-18-2024, 12:42 Go to last post

  4. Lightbulb Protect Your Brand New Duramax

    Started by More Power, 06-19-2023 10:04
    corrosion, rust
    • Replies: 2
    • Views: 1,486
    More Power
    06-20-2023, 10:22 Go to last post

  5. Post Pros & Cons of Servicing/Owning the LB7, and a little history.

    Started by More Power, 10-03-2022 14:31
    duramax, head gasket, injectors, lb7, replacing
    • Replies: 3
    • Views: 1,733
    More Power
    08-28-2023, 10:44 Go to last post

  6. Peak orange anti-freeze

    Started by spongebob, 01-29-2024 08:57
    • Replies: 0
    • Views: 982
    spongebob
    01-29-2024, 08:57 Go to last post

  7. Oil Pressure issue?

    Started by steven h, 03-11-2024 17:25
    • Replies: 3
    • Views: 1,348
    DIESEL/VETTE
    03-12-2024, 21:17 Go to last post

  8. My cost to replace my 6.6

    Started by spongebob, 12-28-2023 13:33
    • Replies: 17
    • Views: 3,146
    More Power
    01-10-2024, 13:07 Go to last post

  9. MPG with new 6.6?

    Started by DieselDavy, 12-09-2023 18:13
    • Replies: 8
    • Views: 2,547
    DieselDavy
    12-24-2023, 20:47 Go to last post

  10. LB7 Coolant in the Oil HELP!

    Started by dgalvin66, 12-30-2023 11:58
    • Replies: 7
    • Views: 2,057
    dgalvin66
    04-14-2024, 17:45 Go to last post

  11. L5P: Balance rate criteria changed?

    Started by chessy56, 08-17-2023 06:45
    • Replies: 2
    • Views: 1,408
    cabletech
    08-19-2023, 13:30 Go to last post

  12. I was sniveling about..

    Started by spongebob, 03-20-2024 15:14
    • Replies: 5
    • Views: 1,257
    spongebob
    03-22-2024, 11:06 Go to last post

  13. How does this hose come off?

    Started by spongebob, 04-22-2024 12:02
    1 Attachment(s)
    • Replies: 2
    • Views: 802
    spongebob
    04-23-2024, 09:00 Go to last post

  14. heater hose going back on...

    Started by spongebob, 04-28-2024 06:39
    • Replies: 6
    • Views: 358
    spongebob
    04-29-2024, 08:34 Go to last post

  15. Red face Head gasket replacement and beyond,,

    Started by spongebob, 12-25-2023 08:52
    • Replies: 15
    • Views: 1,959
    More Power
    02-13-2024, 13:53 Go to last post

  16. Fuel injectors and pump horror stories….

    Started by spongebob, 01-05-2024 10:11
    • Replies: 4
    • Views: 1,221
    spongebob
    01-06-2024, 14:24 Go to last post

  17. Wink Duramax Head Gasket Replacement

    Started by More Power, 05-31-2021 06:10
    7 Pages •
    1 2 3 ... 7
    duramax, head gasket replacement
    • Replies: 130
    • Views: 23,215
    More Power
    01-30-2024, 15:56 Go to last post

  18. Cold Weather Operation

    Started by More Power, 01-18-2024 12:10
    cold weather, diesel fuel gelling
    • Replies: 0
    • Views: 947
    More Power
    01-18-2024, 12:10 Go to last post

  19. Casper Wyoming area-help needed

    Started by Kennedy, 08-23-2023 11:11
    • Replies: 2
    • Views: 1,438
    Kennedy
    08-29-2023, 09:20 Go to last post

  20. can I pull the T-stats and run the engine?

    Started by spongebob, 01-09-2024 12:02
    • Replies: 1
    • Views: 785
    More Power
    01-18-2024, 12:19 Go to last post
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