"This is a "glorified-tractor-which-you-can-drive-in-the-rain-and-not-get-wet" forum, not a "Speed Shop" forum.
If someone needs high performance specs (which needs to have every moving part of the engine taken into consideration), this site is not where one should go for that much information."

Carl,

I would define "high performance" a little differently than you may. To me it is doing the assigned task in the most effective way possible. In the case of a truck engine that would probably mean making a lot of torque at low RPM. For any given engine there is probably a group of parts that would work effectively together to accomplish that objective.

People who have built and tested a lot of truck engines have probably found the optimum combination. I think that is what the original poster was asking about. I will confess to you that I don't see why the original poster put his question on the wrong forum.

Ray