The universal SHP equation is:
SHP = rpm x torque (lb-ft) / K
where K = 33000/6.2832 = 5252
Note: RPM & torque must be measured on the same shaft - e.g. gearbox input
What you need to know is -
What is 100% gage rpm?
What is 100% gage torque?
Once you know these you can do the numbers.
