340 issue after camshaft change

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?
No zero lash is ZERO. When all of the slack is remove and there's NO lifter preload. THAT'S zero lash.
:thankyou: I always set preload barely off the retainer