Porting BB heads

What I'm sayin is.....all them guys you made mention of WERE usin stones at SOME point back in time......and not too terribly in the distant past. They were runnin some pretty damned fast times with those type valve jobs. Carbide tipped cutter valve jobs are not the end all be all number reason why modern engines are more efficient and "better". There's not a "one" reason answer there.......BUT if "I" personally had to pick one thing that did contribute more than anything else, it would be modern electronic fuel injection. Perhaps I can put it another way. I know peole who run in the 8s at over 160 MPH who have had valve jobs done with stones. If a stone type valve job will run that fast, that's good enough for me.

....and for the record, I agree with you FAR more than disagree. I just like stirrin the pot. ;)