Mark, Happy Father's Day!
The inlet manifold flow for "bleed" is a "iffey" proposition. "Iffey" cooling systems cost you peace of mind and MONEY. Why create another 'K' series cooling system/potential disaster?
Tutorial time -
Of course, I don't want to create a headache. But what makes the intake manifold water flow - which is plumbed to the heads though fairly large passages at the top of both the front and the back of the heads - an "iffey" situation?
The top of the head(s) are currently sitting about 1 1/2" below the top of the radiator -

The top of the filler can - or header can - is 4 1/2" above the top of the intake manifold - which is well above the top of the heads and manifold, as well as the radiator -

A shot of the plumbing from above -

The top of the radiator sits slightly above the heads, and the - okay, let's call it a "header tank" - I think I referred to it previously as a "catch can" - sits above everything else in the system.
Since I last reported on it, it hasn't been spitting, causing me to think that any air in the system has worked its way out, and seeing as I filled it while not running, expansion of the fluid may have occurred. Nevertheless, it seems to be running on the warm side.
How warm?

Kate's shopping, so I can borrow her candy thermometer . . .
