Hughes published flow numbers is all I have. They told me all their CNC stuff flows within 10 percent of the numbers. They can't flow every head they do, that's "costly and unnecessary with today's CNC equipment", according to them.
When I got them, of course I disassembled them to check the guides and just look around a bit. They looked real nice to me.....nice looking valve job, all valves same installed height, etc. I have no idea what good porting should actually look like. To my eye hell, they looked GREAT. The numbers on their website sure look good.
I'm still not convinced it's entirely a head issue. Have no idea what my next move is.
