Engine and Transmission

6,546 topics in this forum

1. E7 350hp to 500hp that will live 1 2 3 4

   By mackdaddytruckfixer, December 21, 2025
   • 75 replies
   • 1.6k views
   • 
   • Joey Mack
   • 12 hours ago

2. Can A Jake Be Added To An E7

   By diesel, October 4, 2008
   • 8 replies
   • 7.2k views
   • 
   • mackdaddytruckfixer
   • 14 hours ago

3. Need Good Engine brake for E7 350 mechanical

   By mackdaddytruckfixer, 23 hours ago
   • 0 replies
   • 49 views
   • 
   • mackdaddytruckfixer
   • 23 hours ago

4. 300+ rebuild 1 2 3 4 17

   By Freightrain, July 9, 2025
   • 406 replies
   • 18.9k views
   • 
   • Freightrain
   • Yesterday at 01:20 AM

5. E9 nipping up

   By MicksMack, Saturday at 11:51 PM
   • 2 replies
   • 68 views
   • 
   • Joey Mack
   • Yesterday at 12:43 AM

6. Flywheel question

   By Freightrain, Friday at 02:31 PM
   • 9 replies
   • 160 views
   • 
   • Joey Mack
   • Saturday at 10:26 PM

7. Injection pump stuck full throttle

   By chuckholes, Friday at 04:01 AM
   • 2 replies
   • 144 views
   • 
   • fjh
   • Friday at 03:03 PM

8. Cam Sensor Issues

   By Aggiebanker, December 30, 2025
   • 4 replies
   • 151 views
   • 
   • fjh
   • December 31, 2025

9. 866 V8 gasket set locating 1 2

   By Full Floater, November 10, 2025
   • 30 replies
   • 1.5k views
   • 
   • Full Floater
   • December 30, 2025

10. Ai 427 intermittent fuel issue 1 2

    By Orange cv713, December 27, 2025
    • 31 replies
    • 569 views
    • 
    • Joey Mack
    • December 29, 2025

11. Oil leaking from my bottom manifold bolts E7-AMI370

    By petehall12, December 3, 2024
    • 9 replies
    • 1.2k views
    • 
    • Joey Mack
    • December 28, 2025

12. Transmission mounts

    By mcratchet1, December 18, 2025
    • 7 replies
    • 334 views
    • 
    • mowerman
    • December 18, 2025

13. Mack E6 4v HP?? 1 2

    By FarnorthMN, December 5, 2025
    • 26 replies
    • 990 views
    • 
    • Vladislav
    • December 17, 2025

14. 2008 Mack MP8 engine timing

    By 2wdiesel2021, December 15, 2025
    • 8 replies
    • 293 views
    • 
    • fjh
    • December 16, 2025

15. Eaton versus Meritor Rockwell Transmissions

    By farmer52, December 15, 2025
    • 12 replies
    • 376 views
    • 
    • fjh
    • December 16, 2025

16. E6 2V head interchangeability 1 2

    By Full Floater, December 8, 2025
    • 26 replies
    • 855 views
    • 
    • mowerman
    • December 13, 2025

17. Etech Q

    By Straydog954, November 11, 2025
    • 10 replies
    • 654 views
    • 
    • Straydog954
    • November 30, 2025

18. E6 350 puff limiter valve

    By Nathanwhit1, November 26, 2025
    • 7 replies
    • 470 views
    • 
    • Vladislav
    • November 27, 2025

19. E7 etech overhead with spring loaded push rods

    By RedMackWheeler, November 25, 2025
    • 9 replies
    • 349 views
    • 
    • Joey Mack
    • November 25, 2025

20. Rebuilt engine fuel knock

    By DJ Truck Repair, May 12, 2024
    • 8 replies
    • 1.3k views
    • 
    • Kodiak1984
    • November 25, 2025

21. Blink code 6-4 no-start CHN613 AC400/Allison.

    By 96bulldogpower, March 17, 2018
    • 23 replies
    • 13k views
    • 
    • terry
    • November 24, 2025

22. E9 Engine Brake

    By ThaddeusW, August 25, 2005
    • 18 replies
    • 11.1k views
    • 
    • fjh
    • November 22, 2025

23. Occasional Engine surge

    By RS Disposal, November 18, 2025
    • 13 replies
    • 689 views
    • 
    • fjh
    • November 21, 2025

24. 09 Mack MP7 shuts down every 15 minutes

    By VICTORMadera, November 22, 2020
    • 6 replies
    • 2.7k views
    • 
    • Gravel
    • November 21, 2025

25. Wrong gearing maybe?

    By R.E.D, November 15, 2025
    • 22 replies
    • 1.1k views
    • 
    • R.E.D
    • November 20, 2025