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Originally Posted by comptiger5000

The key for those of us with big engines is to make the engine itself more efficient. By doing this, it can develop more power when needed, and also get better mpg.

An RV grind is meant to give more low-end torque, for moving a heavy vehicle off the line.

Also, after thinking about it, with a properly geared transmission (not CVT), you would get maximum acceleration by shifting at, or just past, the horsepower peak, and having the RPMs fall back to the torque peak after the shift.

Maximum acceleration occurs when the area under the curve between the shift point and the pickup point (new gear engagement) are nearly equal on both sides of the peak.

Dropping back to your torque peak won't get you maximum acceleration, unless your HP and torque peaks are within 1,000 or so RPM of each other. Gears designed for quickest acceleration seldom are desirable for high maintained speeds, and the same goes for the other way around... high maintained speed will require gearing that isn't conducive to the quickest acceleration. That has nothing to do with torque and HP peaks, though... it's only got to do with redline and RPM shift between gears.