With a timing chain you have a button or thrust bearing to keep the cam from going forward. What are the thoughts of the timing chain sets with the thrust bearings on the block side. Or is the oil wedge between the two surfaces sufficient?
I think you can take it or leave it. On a regular street car, with a small hydraulic cam and low spring pressure, I would go with just a non-Torrington bearing, Higher spring pressures I would use one.