Horsepower Calculation?

Originally posted by hondaman-iac


ummm i tried to do that and on my car @117mph (the top) ands i should get 431 hp and an accord engine will do that only in it's dreams

The MPH in the equation should be your speed at the end of the 1/4 mile (is this what's called the "trap speed"?). I agree, 431 hp would be pretty nice for an accord, but so would a 1/4 mi @ 117 mph. I think doing a HP calculation based on max speed would require knowing the car's frontal area, altitude, etc.