6.6L Gas V8 (L8T)

254 topics in this forum

1. Road Master Active Suspension

   By GAMark, June 16
   • 7 replies
   • 549 views
   • 
   • GAMark
   • July 8

2. Trading 7.3 (Godzilla) for G.M.C gas 1 2

   By lsttype, June 18, 2023
   • 20 replies
   • 21.4k views
   • 
   • KARNUT
   • July 7

3. Trim level custom/pro

   By Gary Doolin, June 22
   • 10 replies
   • 563 views
   • 
   • BCGM
   • July 6

4. J&L OIL SEPARATOR CO 1 2

   By GAMark, May 13
   • 21 replies
   • 1.3k views
   • 
   • Pryme
   • July 5

5. Fluid Change Questions 1 2

   By Core-Lokt, May 20
   • 28 replies
   • 2k views
   • 
   • Chuck FB
   • July 4

6. Oil Consumption 1 2 3 4 20

   By riddler, May 27
   • 297 replies
   • 12.4k views
   • 
   • MORSNO
   • July 3

7. summer road trips in the 2026 2500HD

   By c4racer2, June 22
   • 9 replies
   • 653 views
   • 
   • c4racer2
   • June 30

8. Turning radius

   By Randy Ginoza, June 26
   • 4 replies
   • 301 views
   • 
   • StingerZ16
   • June 29

9. MPG at 600 miles 1 2

   By 2021 HD, September 10, 2023
   • 22 replies
   • 6.4k views
   • 
   • Byrds8
   • June 29

10. New or used

    By Gary Doolin, June 18
    • 5 replies
    • 431 views
    • 
    • Chuck FB
    • June 19

11. first oil change - 2026 2500HD gas

    By c4racer2, June 9
    • 14 replies
    • 1k views
    • 
    • c4racer2
    • June 18

12. Shopping for new truck and have question. 1 2

    By Gary Doolin, June 3
    • 19 replies
    • 1.1k views
    • 
    • asilverblazer
    • June 10

13. 2024 6.6 gas 28000 engine failure 1 2 3 4 5

    By James McArthur, April 28
    • 64 replies
    • 4.8k views
    • 
    • riddler
    • June 3

14. Which tire? 1 2 3

    By GAMark, April 15
    • 37 replies
    • 2.6k views
    • 
    • Chuck FB
    • June 2

15. L8T and 93 octane or 90 rec gas.

    By GAMark, June 1
    • 12 replies
    • 832 views
    • 
    • GAMark
    • June 2

16. Banks Diff Cover.

    By GAMark, May 28
    • 0 replies
    • 217 views
    • 
    • GAMark
    • May 28

17. Cat back.

    By GAMark, May 10
    • 5 replies
    • 715 views
    • 
    • dal1980
    • May 25

18. L8S 6.6L V-8

    By C/K Man, August 21, 2025
    • 3 replies
    • 1.5k views
    • 
    • C/K Man
    • May 24

19. 2022 Trans temp... 1 2 3

    By hdhp, October 9, 2021
    • 34 replies
    • 25.1k views
    • 
    • Tyler Gibbs
    • May 21

20. Oil drain bolt washer. 1 2

    By GAMark, May 4
    • 27 replies
    • 1.7k views
    • 
    • Another JR
    • May 16

21. I would like to start a NEW catch can post for all to follow. 1 2 3 4 8

    By Jettech1, January 30, 2023
    • 113 replies
    • 23.9k views
    • 
    • Grumpy Bear
    • May 1

22. Non-dexos oil 1 2 3 4 5

    By chris-i, March 11
    • 66 replies
    • 4.9k views
    • 
    • PunchT37
    • April 30

23. A few items added to the 2500.

    By GAMark, April 14
    • 10 replies
    • 1.2k views
    • 
    • GAMark
    • April 29

24. howdy from CO

    By c4racer2, April 25
    • 3 replies
    • 394 views
    • 
    • c4racer2
    • April 27

25. Anyone have a BANKS PEDAL MONSTER on their L8T??

    By No F-bdy Bs, April 22
    • 5 replies
    • 815 views
    • 
    • Byrds8
    • April 24