SB Stroker - What Cooling System?

Made some progress, swapped to different pulleys with a smaller WP pulley and bled the cooling system with a big help from TXDart!
He came up 40 miles and trailered the Duster to his shop. We put his emissions sniffer on the radiator neck and got ZERO hydrocarbons and carbon monoxide, ruling out a head gasket. He also has a killer funnel bleeder system and we got a bunch of air out of the block.

So far we had it down to a peak of 215° and it's steady about 210, down from 230-245°
It was a cool 77° when tested last night, though.
Backed timing down to 34° total and will try it again this afternoon in the heat.