The 2.00" valve may have hurt but again it was what I had and didn't feel like "more" machining and turning the intake valves down. There is more than enough bowl and S.S. in the Magnum castings--WAY more than any LA casting. I spent 45-50 mins per cylinder and my hands were numb as the proof. Again, could I have really worked and experimented with the valves and angles? Of course! But then the question becomes--Is the climb worth the view?
Lets say this build produces 388 hp but if I spent a week on and off the bench testing and testing and equalizing and it theoretically made 399 hp , would it really have been worth it? Not to me--I'd be half way through another build in a weeks time.
Would love to see a pic of a head on your bench, I don't recall ever seeing one. What kind of bench do you test on? If you haven't flowed a head on your bench and then a SF1020 then I doubt you could make that statement. DART even states it in their catalog, SuperFlow even states the 1020 does not display the flow rates their venerable 600 does. The important thing here is that I know how this bench correlates and have only been fooled a few times by a big reading on this bench and less than expected results on the dyno.
I'm a big believer in Magnum heads and won't waste time or a dollar on LA stuff for myself anyways. Thanks for your thoughts though. Its rare that perspectives line up on matters such as these. J.Rob