99 problems and a Ford ain't one.

No data from OP on cam specs. Just spit-ballin from Comps website. I ran a Ford Y-312 years ago and ran my lifters no lash once. Ran like crap and found lash specs quickly after that. First solid lifter motor I owned. Looser is always more forgiving that tighter so .020 was a good start. We can work from there.