I am trying to choose a cam that will increase my CR but also has a duration for hi-rpm.If the motor I am building has hi-rpm capability,and I don't care a rats butt about low rpm performance,shouldn't I go with a hi/long duration cam? The majority of recomendations as far as cam selection take into account drivability,well I am not concerned about that.If I want only top-end performance wouldn't more duration and a wider LSA be the way to go? At low rpm, opening and closing rates are slower and a 110LSA would be desirable for good cylinder filling and smooth operation.But at anything over 4000 rpm wouldn't the VE suffer and a 112 or 114 LSA with 300+ duration work much better? Better flow and filling characteristics are desirable for hi-rpm,so why cut the flow short with 110 LSA and a street duration?