Engine and Transmission

6,582 topics in this forum

1. wrist pin bushings. 1 2

   By 07cl733, 16 hours ago
   • 25 replies
   • 189 views
   • 
   • 07cl733
   • 10 minutes ago

2. 300+ rebuild 1 2 3 4 37

   By Freightrain, July 9, 2025
   • 909 replies
   • 53k views
   • 
   • Freightrain
   • 18 hours ago

3. E7 454 questions

   By Mackman87, Friday at 04:00 PM
   • 6 replies
   • 165 views
   • 
   • Mackman87
   • Yesterday at 12:23 AM

4. 2000 Mack rd688 e7 air compressor help 1 2 3

   By Moparmike, March 12
   • 52 replies
   • 2.8k views
   • 
   • Moparmike
   • Friday at 10:17 PM

5. 9 to 8 speed 1 2

   By Flying Pig, March 25
   • 26 replies
   • 1.1k views
   • 
   • Flying Pig
   • March 30

6. Thoughts on cam shaft replacement.

   By 07cl733, March 25
   • 4 replies
   • 348 views
   • 
   • Joey Mack
   • March 28

7. Eaton auto shift problem

   By Jason Chernoff, March 26
   • 0 replies
   • 198 views
   • 
   • Jason Chernoff
   • March 26

8. Etech cylinder liner question.

   By 07cl733, March 23
   • 16 replies
   • 1.2k views
   • 
   • Joey Mack
   • March 25

9. Expanding operations

   By Flying Pig, March 20
   • 13 replies
   • 506 views
   • 
   • Geoff Weeks
   • March 21

10. Old Jake brake thread. Brake saver retarder question

    By BronsonA2150, March 16
    • 10 replies
    • 515 views
    • 
    • mrsmackpaul
    • March 17

11. Early 90'wiring

    By underdog77, March 16
    • 0 replies
    • 146 views
    • 
    • underdog77
    • March 16

12. This should bring back memory's for us that were involved with cam jobs in the past!

    By fjh, March 15
    • 0 replies
    • 192 views
    • 
    • fjh
    • March 15

13. 2005 Cv713 Ai400 power issues 1 2

    By MillennialTrucker93, August 30, 2021
    • 31 replies
    • 8.6k views
    • 
    • MillennialTrucker93
    • March 13

14. Is there a physical size difference between e6 and e7 engine?

    By BronsonA2150, March 9
    • 6 replies
    • 370 views
    • 
    • Freightrain
    • March 10

15. Mack fuel issue

    By cfd511, February 23
    • 2 replies
    • 426 views
    • 
    • cfd511
    • March 10

16. ‘58 B-61 Duplex 1st gear hanging 1 2

    By pdgx, March 6
    • 32 replies
    • 1.3k views
    • 
    • mowerman
    • March 10

17. Etech preformance Parts

    By jervn4, March 9
    • 6 replies
    • 533 views
    • 
    • Mark T
    • March 9

18. Mack Maxidyne: The Engine That Killed the Twin Stick

    By 70mackMB, March 8
    • 4 replies
    • 388 views
    • 
    • mrsmackpaul
    • March 9

19. Dpf emulator

    By 2014pinnacle, March 25, 2022
    • 17 replies
    • 7.7k views
    • 
    • 86n96
    • March 7

20. Transmission mounts

    By mcratchet1, December 18, 2025
    • 11 replies
    • 1k views
    • 
    • mcratchet1
    • March 6

21. Clutch brake 1 2

    By Freightrain, March 2
    • 46 replies
    • 2.6k views
    • 
    • Freightrain
    • March 6

22. Another MP7 no crank no start with history of burned ecm’s

    By 96bulldogpower, January 30
    • 23 replies
    • 956 views
    • 
    • Mackpro
    • March 5

23. E6 tachometer drive gear

    By BottleHauler84, March 4
    • 4 replies
    • 346 views
    • 
    • mowerman
    • March 4

24. Occasional Engine surge 1 2 3

    By RS Disposal, November 18, 2025
    • 52 replies
    • 3.6k views
    • 
    • RS Disposal
    • March 2

25. 1986 E6-350 4 Valve Head question

    By mackmodelb, February 19
    • 2 replies
    • 414 views
    • 
    • mechohaulic
    • February 20