6.6L Gas V8 (L8T)

260 topics in this forum

1. Correct way to service 2024 l8t allison trans? 1 2 3

   By Aimatdeer, March 15, 2025
   • 38 replies
   • 8.2k views
   • 
   • Chuck FB
   • 6 hours ago

2. first oil change - 2026 2500HD gas 1 2

   By c4racer2, June 9
   • 24 replies
   • 1.9k views
   • 
   • No F-bdy Bs
   • 11 hours ago

3. OIL CONSUMPTION

   By RSTRICK, Thursday at 04:55 PM
   • 2 replies
   • 160 views
   • 
   • Chuck FB
   • Friday at 10:28 PM

4. 2020 hd2500 cruise stopped working

   By Pythonhunter, June 3, 2025
   • 4 replies
   • 633 views
   • 
   • carkhz316
   • Wednesday at 11:17 AM

5. PF63 Oil Filters Going Away? 1 2 3 4

   By Another JR, August 14
   • 53 replies
   • 2.6k views
   • 
   • mrjulian416
   • August 21

6. Supercharger (whipple)

   By riddler, August 17
   • 1 reply
   • 263 views
   • 
   • No F-bdy Bs
   • August 19

7. Dave's Auto (custom engine builder) tear down of L8T

   By mrjulian416, August 7
   • 4 replies
   • 670 views
   • 
   • Chuck FB
   • August 16

8. Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

   By jake111, August 6
   • 5 replies
   • 467 views
   • 
   • superdave160
   • August 14

9. Fluid Change Questions 1 2

   By Core-Lokt, May 20
   • 29 replies
   • 2.8k views
   • 
   • Core-Lokt
   • August 7

10. 10L1000 anyone with High Mileage ? I hate Damocles.... 1 2 3 4 6

    By Homer1959, October 29, 2025
    • 75 replies
    • 8.8k views
    • 
    • Chuck FB
    • July 23

11. Is your l8t engine bay super dusty?

    By No F-bdy Bs, July 21
    • 6 replies
    • 589 views
    • 
    • rjgvt
    • July 22

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

    By Gary Doolin, June 3
    • 21 replies
    • 1.8k views
    • 
    • KARNUT
    • July 20

13. Road Master Active Suspension

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

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

    By lsttype, June 18, 2023
    • 20 replies
    • 22.8k views
    • 
    • KARNUT
    • July 7

15. Trim level custom/pro

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

16. J&L OIL SEPARATOR CO 1 2

    By GAMark, May 13
    • 21 replies
    • 1.7k views
    • 
    • Pryme
    • July 5

17. Oil Consumption 1 2 3 4 20

    By riddler, May 27
    • 297 replies
    • 15.4k views
    • 
    • MORSNO
    • July 3

18. summer road trips in the 2026 2500HD

    By c4racer2, June 22
    • 9 replies
    • 1k views
    • 
    • c4racer2
    • June 30

19. Turning radius

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

20. MPG at 600 miles 1 2

    By 2021 HD, September 10, 2023
    • 22 replies
    • 6.8k views
    • 
    • Byrds8
    • June 29

21. New or used

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

22. 2024 6.6 gas 28000 engine failure 1 2 3 4 5

    By James McArthur, April 28
    • 64 replies
    • 5.9k views
    • 
    • riddler
    • June 3

23. Which tire? 1 2 3

    By GAMark, April 15
    • 37 replies
    • 3.2k views
    • 
    • Chuck FB
    • June 2

24. L8T and 93 octane or 90 rec gas.

    By GAMark, June 1
    • 12 replies
    • 1.2k views
    • 
    • GAMark
    • June 2

25. Banks Diff Cover.

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