Doing overhead today, CM-871

[Nilao]

I'm about the same Waterloo. Mine smokes at start up in the morning but stops once it reaches operating temperature. I'm thinking it's time for new actuators as these have 700k miles. As far as the overhead I just look for the normal stuff. Cam lobes starting to fail. Unusual wear on the rollers. Cam bearings where they should be. Outside of that I think you'd be fine with the simple overhead set.