I've had this up before, but this is dyno results on a 460 =.030 Ford with a solid lifter cam (spec'd by Comp Cams), a Coan glide with a 3800 stall converter... This car weighs 2485 with driver and fuel, runs consistent mid 10's with 500 rwhp... This is real world, not overely optimistic desktop dyno numbers.....BTW, real efficiency numbers for your desktop dyno are probably closer to 80% then they are to 100%. I guess if we just all used the desktop dyno numbers, we wouldn't have to bother building the car or taking it to the track, huh?????