[joyridin']

"Changing cam brands will make absolutely no difference in regards to hardness issues. Every single cam grinder purchases their semi-finished blanks from one of two Michigan based companies - either Camshaft Machine or Engine Power Components. Those two companies purchase all of their castings from CWC-Textron in Muskegon Michigan - and they are flame hardened on rollers prior to delivery. In simple terms - they all come from the SAME PLACE."

I assume you are talking blanks for solid and hydraulic cams and not rollers?