[onelove]

As most engine builders will tell you "RPMs kill engines.". That's not to say the S54 can't handle high revs, however an engine held at 8200rpm vs. one held at 3500rpm will not last nearly as long. Strictly principle at this point since these engines were build to go over a hundred thousand miles, but physics are physics.

Holding at a higher RPM probably isn't the greatest idea, that being said the benefit of using a higher reving motor that still has a linear powerband is to get the most out of your torque curve. While the peake may be at 4500rpm, if you were to shift at 4500pm at the track, you'd be way out of the "sweet spot" in the next gear. By reving the engine out a tad you're able to maintain that peak in the next lower gear. Look at it this way, those areas where you were at 7500rpm and holding, if you where to shift prior you would have been just slightly above the peake torque in the next gear while maximizing acceleration.