To coment on the Camless enging. Sturman industries has a couple of working trucks that are camless. It is not just a electromagnet solenoid valve rather a hydraulic actuated electromagnet valve much like the current injectors used in the 6.0 PSD. Able to vary valve timing and even cut out cylinders. Unlike the camed engines that tried to cut out cylinders being able to vary the valve action may make it work. As great a potential of an engine this is, I absolutely will not be buying one the first year out!
Chek out this link:
http://www.sturmanindustries.com/html/press-ppihc.htm