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Forum: 6.2L/6.5L Diesel - Upgrades & Service Questions Answered

Tech forum containing the best technical information about these engines. Please post in the related 6.2L & 6.5L forums. We'll transfer the best topic threads to this forum.

  1. Sticky Thread Sticky: Cooling Upgrades Techie Question

    Started by moondoggie, 09-28-2006 09:50 AM
    3 Pages
    1 2 3
    • Replies: 40
    • Views: 8,001
    04-04-2020, 04:14 PM Go to last post
  2. Sticky Thread Sticky: Boost/Compression Ratio Calculator

    Started by afgunn, 07-20-2007 05:13 PM
    2 Pages
    1 2
    • Replies: 33
    • Views: 8,470
    01-14-2019, 12:04 PM Go to last post
  3. Arrow Sticky Thread Sticky: Bolt Lug Pattern Measurement Guide

    Started by More Power, 06-25-2018 10:04 AM
    • Replies: 0
    • Views: 1,581
    06-25-2018, 10:04 AM Go to last post
  4. Arrow Sticky Thread Sticky: 6.5 Girdle

    Started by More Power, 03-15-2007 12:36 PM
    3 Pages
    1 2 3
    • Replies: 47
    • Views: 11,912
    06-11-2017, 07:34 PM Go to last post
  5. Arrow Sticky Thread Sticky: Bypass cooling for the 6.2/6.5

    Started by More Power, 11-17-2006 02:51 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 61
    • Views: 13,335
    05-15-2017, 10:29 AM Go to last post
  6. Sticky Thread Sticky: Shuts off while driving - Stalling

    Started by Eddys, 12-16-2004 09:34 AM
    7 Pages
    1 2 3 ... 7
    • Replies: 133
    • Views: 20,344
    03-11-2016, 11:22 PM Go to last post
  7. Arrow Sticky Thread Sticky: Gear Drive vs Chain Timing Sets

    Started by More Power, 06-01-2009 01:49 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 9,015
    02-29-2016, 05:38 PM Go to last post
  8. Thumbs up Sticky Thread Sticky: Amg P400

    Started by More Power, 03-14-2008 11:52 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 115
    • Views: 22,066
    06-07-2015, 04:15 PM Go to last post
  9. Arrow Sticky Thread Sticky: 6.2/6.5 Cylinder Block Date Code

    Started by More Power, 09-07-2006 11:52 AM
    3 Pages
    1 2 3
    • Replies: 46
    • Views: 11,887
    11-22-2014, 11:03 AM Go to last post
  10. Arrow Sticky Thread Sticky: AMG/GEP 506 Navistar Longblock ID

    Started by More Power, 11-26-2007 04:04 PM
    • Replies: 15
    • Views: 5,338
    03-04-2014, 11:43 AM Go to last post
  11. Arrow Sticky Thread Sticky: Will a factory 6.5 turbo system work on an 80's 6.2?

    Started by More Power, 06-21-2007 02:53 PM
    • Replies: 18
    • Views: 6,069
    11-12-2013, 12:10 PM Go to last post
  12. Sticky Thread Sticky: Max fuel economy for the 6.5TD

    Started by More Power, 12-23-2004 03:31 PM
    6 Pages
    1 2 3 ... 6
    • Replies: 107
    • Views: 12,717
    09-16-2013, 06:28 AM Go to last post
  13. Arrow Sticky Thread Sticky: 6.2/6.5 Dyno Data

    Started by More Power, 10-16-2007 10:04 AM
    • Replies: 13
    • Views: 6,544
    06-05-2012, 05:30 AM Go to last post
  14. Sticky Thread Sticky: AMG/GEP 6.5 blocks

    Started by Robyn, 08-10-2011 03:47 PM
    2 Pages
    1 2
    • Replies: 31
    • Views: 6,373
    03-28-2012, 04:59 PM Go to last post
  15. Sticky Thread Sticky: Useful part numbers of hard to find items

    Started by Robyn, 10-09-2011 04:41 PM
    • Replies: 0
    • Views: 2,012
    10-09-2011, 04:41 PM Go to last post
  16. Poll Sticky Thread Sticky: Poll: 6.5TD MPG Hiway mileage Poll!

    Started by Cowracer, 03-22-2006 04:16 PM
    3 Pages
    1 2 3
    • Replies: 59
    • Views: 11,399
    07-01-2011, 10:35 AM Go to last post
  17. Arrow Sticky Thread Sticky: Adjustable Turbo Wastegate Actuator

    Started by More Power, 02-14-2008 10:55 AM
    2 Pages
    1 2
    • Replies: 25
    • Views: 8,163
    06-03-2011, 12:25 PM Go to last post
  18. Arrow Sticky Thread Sticky: Damper Bolt Tightening Fixture

    Started by More Power, 08-02-2008 01:37 PM
    • Replies: 4
    • Views: 2,389
    03-25-2011, 08:50 AM Go to last post
  19. Question Sticky Thread Sticky: Performance 6.5 Injectors

    Started by More Power, 03-10-2007 04:58 PM
    5 Pages
    1 2 3 ... 5
    • Replies: 89
    • Views: 16,369
    10-22-2010, 12:38 PM Go to last post
  20. Arrow Sticky Thread Sticky: FSD/PMD Relocation Kits

    Started by More Power, 10-06-2009 01:35 PM
    • Replies: 2
    • Views: 2,256
    10-06-2009, 01:38 PM Go to last post
  21. Sticky Thread Sticky: Dtc P0251

    Started by mncguy, 07-18-2008 05:29 AM
    • Replies: 3
    • Views: 1,827
    07-18-2008, 10:48 AM Go to last post
  22. Arrow Sticky Thread Sticky: 6.5 TD Highway Mileage Poll by GMC Hauler

    Started by GMC Hauler, 04-02-2006 05:07 PM
    3 Pages
    1 2 3
    • Replies: 42
    • Views: 7,869
    04-25-2008, 06:51 PM Go to last post
  23. Arrow Sticky Thread Sticky: Billet & Forged Crankshafts

    Started by More Power, 04-19-2007 01:03 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 73
    • Views: 10,773
    02-18-2008, 10:43 AM Go to last post
  24. Question Sticky Thread Sticky: Is it worth changing gears for better MPG's???

    Started by 16gaSxS, 06-19-2006 12:47 PM
    7 Pages
    1 2 3 ... 7
    • Replies: 137
    • Views: 13,776
    02-07-2008, 04:49 PM Go to last post
  25. Arrow Sticky Thread Sticky: 18:1 Compression Ratio

    Started by More Power, 11-16-2007 09:51 AM
    2 Pages
    1 2
    • Replies: 34
    • Views: 8,661
    01-24-2008, 02:03 PM Go to last post
  26. Arrow Sticky Thread Sticky: 6.5 Precups - Power -OR- Economy?

    Started by More Power, 02-06-2007 02:52 PM
    2 Pages
    1 2
    • Replies: 36
    • Views: 7,686
    12-17-2007, 08:53 PM Go to last post
  27. Arrow Sticky Thread Sticky: New 6.2/6.5 Tech Forum

    Started by More Power, 07-27-2006 02:35 PM
    • Replies: 10
    • Views: 4,586
    10-12-2007, 08:03 AM Go to last post
  28. Sticky Thread Sticky: Air flow, turbos, fuel and more?????s

    Started by quickv6, 10-10-2007 05:11 PM
    • Replies: 5
    • Views: 2,691
    10-11-2007, 07:12 PM Go to last post
  1. Lightbulb Stamped-Steel Rocker Arms - Brass Buttons

    Started by More Power, 11-02-2020 05:01 PM
    • Replies: 0
    • Views: 52
    11-02-2020, 05:01 PM Go to last post
  2. Starter

    Started by 6.5 Detroit Diesel, 08-31-2007 08:37 PM
    • Replies: 3
    • Views: 416
    03-03-2020, 12:44 PM Go to last post
  3. Factory AC Delco Fuel Filter Assemblies

    Started by More Power, 01-13-2020 12:08 PM
    • Replies: 0
    • Views: 582
    01-13-2020, 12:08 PM Go to last post

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