It developes 4,800 Shaft Horespower. Total on the crane is 9,600. The transmission gearbox actuallt generates 7,500. I'm not sure if you want some facts on the 64, but it's a civil version of the CH-54. the 64F is the CH-54B. They are 88ft. long. The Skycrane can pick 25,000lbs on a normal day, but one (now here in Alaska) picked up a tank filled with cement, weighing in at 40,170lbs! A Skycrane (the same one) has beaten an F-4 to 10,000ft, and has made it to 37,000ft in a vertical accent. The clearence under the body is 9ft, 6in. IT has a four point hook saystem for lifting paletized cargo. The rep. at Pratt probably would'nt give any info because the engine was originally going to be used on a fighter, but was later reenginered for torque rather than thrust, and mounted on the Skycrane. Erickson currently operates 25. Some are used for firefighting, where they can haul up to 3,000gal. of water. Hope this helps. If you want more, feel free to ask.