... where are all those pics/threads/experiences of peeps who bought these cheap heads and where valves/guides or anything else has failed?
I hope for everyone that QC, etc., has improved to where that type of incident is truly isolated.
However, there have been legit issues in the past (whether posted on here or not). David Vizard mentioned having received a set of BB Chevy Procomp heads some time back at the same time as a friend who was a pro engine builder. Vizard said before he ever started working on his set, the other guy said the heads he dynoed dropped a valve seat insert or two, at which point DV turned his into shop door stops, IIRC.
Nothing is "bullet proof"... but some products are less "bullet proof" than others.
