Another tip is to take a deburring tool or other method to break / chamfer the edge between the block and cam bore hole. That sharp edge can catch and gouge the back side of the cam bearing creating a high spot inside the bearing. A good check is to make sure all the cam bearings will fit the cam journals before installing them. I never did until I ran into the problem. It was the correct bearing for the cam journal, but the inside diameter was just slightly smaller than the journal BEFORE installing the cam bearing. I'll have to try out that Vibra-Tite 550 sealer.
I probably will have to do this. I have 1 collapsed regular lifter on my 4th gen 5.3 and a few people said that part of my lifter (roller)made its way into my oil pan. I'll have to do it myself and it will be my 1st time
Hey Pete...did you already reveal the cam choice? Roller or flat tappet? What's the selection gonna be? I have a stoke stroke 440 .030 over to do and wonder what my choice should be?