Those Evil old-style rockers

Another view of the old-style

This is the amount of wear after less than 300mi of driving from the old style rocker pivot.

Old style rocker pivot - Already worn

New Style ('87 and newer) rockers

Bottoms of new style pivots

Bottom of old-style (Not a good design)

Bottom of New Style (much better design)

This is what happens when a rocker comes loose and a push rod gets to know the valve cover.