if you deal with comp cams, check out the cam very carefully. i have a very good friend that hd a comp cam that picked up the ajacent valves [lobes were out of proper location] and bent 5 intakes, i was there and saw it picking up the extra valves [lifters]. comp did ZERO!!! blamed the owner, confiscated the cam and that was it. ILL NEVER USE A COMP CAMS ANYTHING AGAIN, you, of course should do as yo see fit,, just a word of warning.... JEFF tucson az.