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Message: [QUOTE="TARM, post: 316886, member: 578"] I just had company arrive at the house so I can not get away for long but I want to point out a few things. I am not talking about power but actual TQ. I fully agree with the issues with the 7.3. One thing though HP is work done over time. You say that RPM is not a gauge of work over time but that is exactly what it is as far as I can tell. It is a revolution (work) per minute (Time) That is measurement of work over time. Other than that I agree with what you have stated Dave. The question though is one that transcends our motors but is one that has been placed over all engines. When every you get a bunch of gear heads together and ask what level or TQ breaks an engine time and time agains you hear its at low rpms. Now in our situation as Dave has pointed out we tend to try and make much more TQ down low to make up for injection speed. We then have the issue of weak rods. Let me pose another question then: Is there any difference is the stress placed on the connecting rods for a given TQ amount at 2000 rpms versus say 4000 rpms or do they create the same stress on the rods? We can narrow this down even farther and say compressive stress. I think the answer is yes. I will get more detailed in my reasons and support for this position later. but I will say for obvious reasons Same TQ at a higher RPM creates higher wear rates but at lower rpms creates more stress. Sorry guys but I have to go spend time with my guests. My better half would have my @ss if she knew I was in the office on the PC posting and spending time with PSA forum members instead of the people in my home. LOL Be back in a few hours. [/QUOTE]