Originally Posted by itsatdm
People do not understand the relationship between HP and Torque, there is a formula for it. HP=T x RPM divided by 5252rpm, where they are always the same. Both display a curve on a dyno. Even past torque peak the engine can make more power if it spins faster. When the HP line peaks due to design, it is all down hill.
I'd just note; maximum torque and maximum horsepower do not occur at the same rpm.
One can calculate horsepower at maximum torque, and torque at maximum horsepower, but . . . two different rpm values are involved . . .