Nope

1HP = 746 watts (746 kw is nearly 1000hp)

brake power = torque x radians

watts = newton meters x [(rpm/60)x2pi]

output is the rate at which torque is delivered

This is why a hemi at nearly twice the rpm and just over half the torqe has roughly the same output as a cummins.

Acceleration, when a unit is at anything less than full load/speed, is an entirely different beast. Now you are into the kenetic energy of rotation among other things.

 

I have never looked into it before but I use to work for Caterpillar, how about taking your truck to a Big truck place. Like Peterbilt and run it on their chassis dyno. We had one at Cat for the big trucks? Figure it would be one more place to check!