Just received the flow chart from the person that did the porting on the heads. They look pretty good. Stock they were supposed to flow 262 cfm intake and 204 cfm exhaust at .700 lift. Not sure if they actually ever performed at that level. Here is the flow chart:
That should provide some improvement in performance. Given that I do not plan on having a cam with a .700 lift, something in the .600 range will hit the peak flow. Looking forwards to getting this build done before the race season is over.
Jim