[olddog]

Based on what I wrote earlier, just stroking your engine would give you a peak hp at 5700 rpm. That said, is your engine peaking at 6600 because you are starting to loose control of the valves? Looking at your dyno chart, I am puzzled at the rather steep drop in torque starting around 5300 rpm. I would have expected a more gradual drop off in the beginning. So I am not enough of an expert here. I would advise a good valve train for any engine. Good roller rockers and new valve springs for sure. I suspect your cam would make more torque to a high rpm with better springs, therefore after stroking the engine I think it will peak above 5700 rpm. I cannot be sure though. Let's see what some others think.

Again I would recommend contacting BLYKINS. I think he could set you up with a better cam than you have and a better cam than comp will recommend. I believe he uses Comp and specs the lobes himself. He most likely can purchase your parts and ship them to you for about the same money. He builds a lot of engines and does it for a living.