Check out
www.howstuffworks.com and look for the section on horsepower. It tells the relationship between Horsepower, torque and RPM. It makes it pretty easy to understand. I'm not sure if it will answer your question, but it does have a lot of info.
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Michael Black
Quantum Motorsports
Norman, Oklahoma
1988 Merc Cougar 5.0 HO, P&Ped heads, 2.25" custom mandrel bent dual pipes, T5 five speed tranny
15.43 @ 91.08mph (not shabby for a 3600 pound car)
60' 2.453 Street tires suck!!!