Actually Ford decided not to use those little squirter holes anymore and had both major bearing manufacturers eliminate them as a cost savings measure.
Saving a penny per bearing means a lot when you make a few million of them.
They were designed to squirt
oil into the cylinder for skirt lubrication - - and have nothing to do with cam life. The vast majority of the
oil sprayed around the crankcase comes through the rods side clearance area, and it is limited by rod bearing clearance. Testing proved that the squirters were not needed - - they were a leftover concept from the 50's when the original design work was done.
Now on a Cup motor they put them back - - in the pan rail...