I don't know what, or if, there was ever a published lift capacity for the rear hydrolic life but I'd be very surprised if it was anything less than 500lbs. Hydraulics are very efficient at transferring power and lifting loads. I wouldn't use it to jack up the front of ur car, but lifting the front of a Cub is very doable, I've seen guys do it. As for power to wheels, how's this; you'll run out of traction long before you run out of power.
