Look at the cams in the new hemis, high flow, bigish ports and very tiny duration cams give huge HP numbers. You get the best of everything low RPM power and high RPM power without the stupid long duration cams of the 70s. They do get some decent lift but not at the expense of added duration. An average performance cam duration numbers like a comp 280 magnum 230@.050 would be downright wicked in a 6.1 hydraulic roller.

Another thing to look at and glean information is the engine masters engines and cams, relatively short duration and very high lift with big flow numbers, that seems to be the biggest most consistant part of the recipe the winners use. The winning engines are making incredible TQ per cube and still making very nice HP up stairs.