Scorpion laser etches every rocker arm with it’s ratio and lot number
Check out the video below from our Design Engineer here at Scorpion on Valve Lash Adjustment.
FAQ: Which rocker arm fits the Ford profiler Head?
One solution is to install lash caps on the valve stems.
The pushrod deflects or flexes upon valve opening and then again just prior to valve closing
The easiest way to explain this is to take it in three sections
Pushrod flex and deflection will cause loss in power.
There are many factors to consider in choosing the correct valve spring for your engine.