I was wondering if a split duration cam would help those motors,a little more on the exhaust side then the intake.
I believe this is commonly called a "Bulldog" cam which is dual pattern with longer duration on the exhaust and I think Tom Langdon still sells them.
As for the rest of this topic flowbench research I have been involved in shows flow stall to be the bigger issue negating benefit of more lift either by cam or rocker ratio. The Webshots link in my signature has an album of the head sectioned thru the ports if interested.
