Wtf - roller rocker

Also to add, I built a 455 Olds that had a Lunati solid in it prior, the lash kept opening up on it. The cause was the "solid" tappets were basically hyd. units w/a hardened
tube for a spacer that supported the pushrod seat, the seat was knocking the edge off the tube and opening the lash, but it took weeks & never threw any pushrods.