I've had many motors that wanted to be shifted from 300 to 600 RPM above peak HP RPM, you need to shift it so the motor RPM drops down to the peak tuque RPM twocents scope
Testing the shift RPM is another way to find out what your combination wants scope up work

Last edited by Cab_Burge; 06/22/23 03:20 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)