Technical Article: Horsepower vs. Torque

Description:
An excellent look at the differences between horsepower and torque and how each rating is achieved during engine development by Corvette Powertrain Engineer, Jim Ingle.

Excerpt:
"Two views of the same measurement are involved: power and horsepower. Power is defined as "the rate of doing work" or the "rate of energy transfer". Interestingly, power cannot be measured directly....you can only measure its effects."

Link:  Horsepower and Torque