Anyone here know the correct RPM for the clutch pulley on a 1946 14C? The existing motor RPM isn't legible, and voltage is 440 only. I'm replacing it with a 230V 5HP 1730RPM 3PH motor and Polyspeed phase converter VFD. Also not assuming the current motor pulley is correct. I know the VFD will allow me to adjust the speed, but I'd like to run it at 60HZ at the intended original RPM.