Dyno Day.

[fnfalman]

Okay, let's back it up here and allow me to correct a few things. Without going into the whole course of thermodynamics and calculus and all that shits, I just want to say that the engine makes both TORQUE and HORSEPOWER.

Yes, it's true that you multiple torque by whatever number to get horsepower, BUT that does not mean that an engine makes only torque and horsepower is some sort of foofoo affair.

An engine makes Work (in this case known as torque). This Work (energy with unit of measurement such as Pound-Feet, Newton-Meter, Joule, etc.) generated over an amount of time (seconds, minutes, hours, months, years, etc.) equals Power. Power has many units of measurements (Watts, Horsepower, etc.) and in automotive we just happen to use Horsepower.

In the simplest thermodynamics terms, Energy = Work (not all the times but in this case it is) = Force x Distance. Hence you have Pound-Feet or Newton-Meter (aka Joules). Work/Time = Power (Joules/Second = Watt and Watt can be converted to Horsepower or any other units of measurements for Power).