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Because I'm in the mood to be pedantic I'm going to suggest that there are actually 12 cams in the Ecotec, one for each of the valves, all attached to the one camshaft.
oh really... ah thats good then.. my friend was telling me it had two cams per head.. ? is it just one cam in one of the heads. thanks for the help
next thing you'll be telling us they're a 24 stroke motor...