Greg , thats some interesting observations you were able to see first hand while you were at Ford. I have to ask though, if there were no more gains or improvements to be had than that with the hydraulic roller cams, why did they proceed with the development of that technology. The flat tappet cam and all its companion components are also much cheaper to produce from a manufacturing standpoint,increasing their production costs to make basically the same engine. From an economic viewpoint that seems like bad business sense if there was not really much benefit to justify the development costs to change it.
