ProComp/Speedmaster aluminum heads

I’ve told you exactly how to do it, but you want to go about it some other way.

My way starts with you finding out what the spring requirements are for your current cam.
Either call the cam grinder and ask them, or measure the installed height of the springs that are on the motor now(this assumes the current springs are set up correctly for the cam) and look at the chart on the Crower site and see what the loads are for your spring, at that installed height, and your lift.