Got the valve covers off, rockers are all seated fine, no play at all, springs all look fine, no metallic flakes or anything on the top of the heads.

Cracked the throttle body off, and in the coolant passage on the bottom, there was a decent amount of pure white, foam, that was partially gritty.

Confused the **** out of me seeing something so pure white in the coolant system. Any idea what the heck that could be?

Gonna pop the LIM/SC off and see how the lifters look in a bit.