Some sets worked fine, others appeared to have valves hitting pistons, and the only set I've seen checked was well off the mark. There were obviously quality control issues.

 

hmm well that sounds like its out of the question. i've done alot of searching just having trouble choosing a cam any that sounds bad *** and make hp with quality lol? i'd like to use the bushcur but it says they dont recomend them on a stock block