To put it lightly the temp will continue to go up regardless of driving or idling. Just obviously gets hotter faster when driving. It'll go past 220 no problem. When it's cold out it can tend to hold steady at 205 but once I stop it'll go up and stay there which results in parking and cooling off. Timing I'm unsure, one of those things I'll be checking as I pick this apart since it's on my list next. Cam I am unsure of. Bought this the way it is and haven't needed to tear into the engine.