Quote:
Originally Posted by Jeff Stout
Wow that's a big swing from your original guess. You think that much massaging going on?
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I would have to say YES !
I have done the same type of work on bracket heads in the past without blasting the heads with media to hide the work. It has always been worth approx. 3 tenths or a little more. The MPH always went up also. Certain brands of heads have seen an improvement of 4 to 5 tenths by correcting the OEM C.C.'s with the work.. The bracket racers in Maryland near Budds Creek used to think I could walk on water...LOL. Some of their stuff was pretty much junk to start with though. Its been about 12 years since I did any of that stuff. I got tired of my dinner tasting like cast iron, retired and moved to Fla. .
I also know it for a fact several guys are still doing it. I used to touch up (freshen up) the valve jobs on their heads and have seen what was done. I will NOT mention names because I do not want to start a war. Its not fun anymore at all !