Another thought, typically a cam will not just wear out. You should notice a gradual power loss. It may be a bent lifter rod, or what I'm betting on is a stuck lifter. I had this happen to me, I simply added a couple oz. of Sea Foam to the oil, and it fixed itself in less than a minute. Might be worth a try.
3-YT3600's, 2-YT 6800's, 1-YT6700 for parts.