Looking in the Haynes manual and it's calling for 156 inch pounds torque on the eight intake manifold bolts. Will cross torque them.
Another forum member recommended replacing the thermostat, so purchased one for $22 and replaced yesterday:
Removed the oil separator with PCV valve & installed new $9 PCV valve using the old o-ring on the new valve.
Used the razor blade on a scraper to pry the PCV collar up & off of the tabs, worked great: