[Ron H]

Well, I have learned a few things.
1. is I am making at least 75 more RWHP with my 310 cc KRE 74 cc d ports over my 6x-4 heads. Mainly because,the flow went up and they have a better chamber design. The CR helped a bit as well. I was thinking that I may have lost some throttle response earlier. But with a bit more tuning yesterday on the way home, the low cruise throttle response is there, there is just so much more power in heavy part throttle and a huge amount more power in WOT.
2. I think my cam actually may be better for these heads and may have been a bit big for my old combo as my CR was only 9.4 to 1 and they only flowed 240ish. If the CR is higher 10 to 1 or so and the heads flow 240 @ .550 lift that cam is spot on.
3. Higher lift cams without a huge amount of duration and overlap can produce great torque and HP numbers providing you have the heads to use it.