I am currently majoring in mechanical engineering at Texas A&M after having completed my associates degree in automotive technology (4.0gpa) while i'v been fixing cars at Firestone Autocare. Its odd that i rarely find anyone who knows a thing about the physics of energy efficiency and the relationship between torque and horsepower in an every-day motor vehicle. Now, i know what your thinking! we could spend pages discussing horsepower vs torque proportions and how they vary depending on engine RPM SO ON AND SO FORTH! But thats what the weekend track racers and the gear heads want to know. ME, the engineer is curious about how parts/structure OF THE ENGINE (for example: camshaft lobe profile, valve timing/lift, stroke, bore, etc...) have an affect on power and torque values. It is interesting to think about especially when noticing the differences between output values of diesels vs gasoline powered engines seeing as the torque in diesels triumphs horsepower, and vise versa in modern gas engines. I have a very strong knowledge of the parts that come together in the right sequence to provide efficient combustion, but when it comes to physical factors that can give an engine a lot more low end torque as opposed to high end horsepower, it seems to be a bit more technical. PLEASE, ENLIGHTEN ME. i am interested to hear from anyone into this kind of stuff.