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To a lot of you this may seem elementary but I was very suprized that many of my car buddies didn't know the difference between torque and horsepower. They say something like hp is for speed and torque is how you get there but no real understanding.

Torque is the twisting force of the crankshaft. Like turning a bolt with a torque wrench. Horsepower is the total output. Hp is computed from torque and rpm. Meaning, an engine with 100 ft lbs of torque at 2000 rpm is putting out twice as much hp as an engine putting out 100 ft lbs of torque at 1000 rpm. Or a guy lifting 100lbs (torque) at 20 reps a minute (rpm) is putting out twice as much hp as the guy doing 100lbs (torque) at 10 reps a minute (rpm).

horsepower = rpm x torque / 5252
torque = 5252 x horsepower / rpm
 

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yup you nailed it........that's also why the curves cross at 5252 rpm
 
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