340 issue after camshaft change

do it that way and the valve will be open when the lifter is pressurized.
unless it's a Rhoads or comparable lifter.

No it won't. That's the proper way to set a hydraulic lifter. Think about it. You get the lifter on the base circle, adjust to zero lash and then what? You go PAST ZERO LASH. Right? RIGHT? I usually go 1/4 to 1/2 turn. Some go more. RIGHT?