There is a formula that calculates horse power from torque @ 5252 RPM,,, where HP and Torque get friendly (universally accepted) HP = Torque x RPM divided by 5252. This is not debateable,,, it's the way it's done,,, period. Dyno runs measure torque and convert to HP. Follow the link for more 'light' and less 'heat.' For a great reading link, see pbh/torque-com/pbh/torque-and-hp.html I hope this helps shed some light on the subject :-) Peter