I wiped the inner cam bearings on my tow vehicle 454. Just the inners. What I found was that the cam inner bearing surfaces chattered when ground and you could not see it or feel it. Put it in the lathe and saw 0.001 tir pattern on all the inner cam bearing surfaces. The outer ones did not exhibit any of the chatter and those bearings were good.
Just saying - don't assume or overlook anything............
