Originally Posted by FELBER632
You have valid points. But I think you are pretty set in your direction, and what you want to hear/say. "Al's heads were ONLY 5-6% "off"" That IS a substancial difference. 20cfm in this day and age, combined with internet horseshit/popularity is the difference between being a budget head and a head that is considered "best of the best". Although you seem pretty intelligent, you haven't spent much time on a flowbench or with a die grinder in you hands.....5% is BIG! Once again..Granted the valves were changed, but there were no flow tests as a comparison on the same bench??? Considering that a head porter freshened/fixed the heads and flowed them after work was done amazes me that they weren't flowed before, especially considering the heads came from a reputable shop such as TEA. I will wajor that they WERE.
Please don't misunderstand. 5-6% is substancial. My point is that the reason the heads flowed less on Pete's bench than on TEA's (when they were originally done) is due to the change in valve and valve job not simply a difference in flow benches. I, nor TEA would ever backup flow numbers given a changed valve and or valve job. That would be like expecting waranty work on car after you've swapped engines! So, given that they still flowed reasonably well after such a drastic change to the original design is good!
I applaud your desicion to work on an exclusive basis......hand porting on a mass production scale is for the birds (and those w/ CNC machines!).
Now, about that beer..........