Preston.Corvette

Hey all, every time I start my car up while its hot (~140*+) I hear what sounds like a tick or knock from possibly the valve train. After a while it subsides, maybe 10-15 seconds. It doesn't sound like piston slap. My LS1 does that but only when cold.
Any ideas? Possible failing lifter? I replaced my rocker arms with the trunnion upgrade, but the sound remains. Oil pressure is good too, idles at 35psi @200* oil temp.

Preston.Corvette

I also have a weird misfire seemingly random misfire, that also only appears when the car it hot. I figure that's just a plug though.