Who heads are you using?
Hemiroid heads and rocker gear can be a real pain too get them where they will RPM pass 7500 RPM whiney
Don't buy cheap or rebuilt and blue printed stocker types either tsk
See if you can look at Ray Barton rocker set ups and for which head he makes them for scope twocents

Last edited by Cab_Burge; 12/19/20 02:42 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)