torque vs horsepower
Torque is the key engredient of power output for an engine. Horsepower is just a mathmatical formula derived for selling engines. The main reason vehicles are rated in horsepower was way back in the old days when engines only put out maybe 10-15 hp, people could relate to it with their horseless carriages, and it just never changed. For instance, during the heyday of muscle cars, which sounds more impressive? 410 hp @ 6000 RPM or 360 lb ft at 6000 rpm?
Watts formula was 30,000 lbs one ft in one minute + 1 hp.
Food for thought. No matter what the size or state of tune your engine is in, the horsepower and torque numbers will always be identical at 5252 rpm.