hydraulic lifters on mech cam

Like someone said I"ve done it on dirt track engines with 2barrels holleys carbs where the rules were tight, just adjust the lifter to .010 on both int/exh. never had a problem using good lifters, if you had a loose valve and they could here it you were disqualified .so if you wiped a cam you would get a dnf. but I would never do it on a engine for my car.