Originally Posted by strang3majik
also...HP is just a number. Torque, now thats what matters.
Torque - scientifically measured in lb/ft units, measured by the layman by how much seat material winds up in his sphincter.
Horsepower isn't just some number. It's just a little more difficult to explain than torque is. The fact that there are several units of measurement that can all be referred to as "horsepower" also makes things a little more confusing. http://en.wikipedia.org/wiki/Horsepower
Horsepower is a measurement of power. Power is work over time. Work is a force times a distance.
Hook your truck up to a house, and floor it (we'll pretend for this example that your tires are awesome and don't spin at all- just put everything your engine puts out to the ground). You won't go anywhere, but you will generate plenty of torque. Since you haven't gone anywhere, you will have generated 0 horsepower though since you need to travel some distance in order to have done any work, and if you haven't done any work, you haven't generated any power.