Hows this sound?Combo/camshaft

No expert here but i think your cams a little much for a dual plane and your combo in general. Depending on your weight you could be in the 10s. I run 9.60s at 2700 with a 440 .030 over 12.5 and a 255 @ .050 .618 solid roller. Promaxx heads mw ports with just casting cleaned up. And an indy single with 1000 demon. But with you bigger cid the cam might be close.

Sorry for the thread jack but how are you liking the Promaxx heads? I was dead set on the Trick Flows but the promaxx is starting to look pretty good.