dpb wrote:
Van Chocstraw wrote:
...
CC's equate more to Cubic Inches. Foot pounds equate to horsepower.

cc and ci are both displacements, yes.

torque and horsepower aren't the same units at all---

Multiply horsepower by 33,000 to get foot pounds.

So a 3hp lawnmower has almost 100,000 ft-lb of torque??? Amazing! Them
are some stout crankshafts...

Actually hp*33,000 -- ft-lbs/minute, _not_ ft-lb (as the table shows).
The "per minute" part is significant here.

Yes, "per minute" is the key. Same as how horsepower is measured.

"Horsepower is defined as work done over time. The exact definition of
one horsepower is 33,000 lb.ft./minute. Put another way, if you were to
lift 33,000 pounds one foot over a period of one minute, you would have
been working at the rate of one horsepower. In this case, you'd have
expended one horsepower-minute of energy."

http://www.web-cars.com/math/horsepower.html