@74Scooter what makes a lifter tap? Like what is it hitting on? The lifters are brand new, only maybe 1k miles on them, they were new when I put the camshaft in the car.
Something goes south in the internals and they do not pump up correctly causing slop in the valvetrain. If the car has been sitting for a bit it's not uncommon for one or more to bleed down... but they usually pump up pretty quickly after restart.