Barry I agree about the canted valves and the 5.0" bore centered, but a high speed intake charge should take some of the advantage away. A D port flows better than a oval port on exhaust. If some one shows up with a nascar motor they should win. Intake ,heads, cam, and exhaust is where the power is, Where do lighter parts come into play? I would think that a valve spring with 700lbs of max lift pressure would use more HP than a 400lbs at the same max lift. I would think that looking for 5/16 valves with the same size valve diameter with less wieght would make more power. Just like the honda rods 1.88 instead of the 2.0 rods, less friction less power drain. Would not it be more of an advantage to have a motor max out at 200 rpm over the max pull number. Valve float and bounce have a large part in power lose? NO Yes. How about pushrods, I know they flex under load, 3/8 hollow pushrods would save weight, less power drain. There must be a fine line betweenmax flow for a head and max air/fuel mixture speed into the cylinder for a head. Schbeck lifters are a pollymor material with less weight than a solid roller lifter, they make the V shape one for roller cams again lessweight more power to the crank, high numbers. Just some thoughts Barry, Have a good evening, how is the baby?
Rick Lake