[1967Tempest]

Originally Posted by jray1

Where could I have an air pocket if I have the thermostat gutted so its just a slight restriction and no holding the water back?

You'd be surprised.

An easy way to make sure that there is no air bubble is to:

1: Drain the coolant to below the t-stat line.
2: Remove t-stat housing and gutted t-stat.
3. fill the water crossover with water until it is at the t-stat line.

At this point you could spin the water pump to see if the area from the intake manifold to the timing cover has fluid in it. or use a coat hanger to "stab" and air bubble if there was one.

Fart bubble in your butt is similar. Gotta move to pop it!!