Slant 6 Coolant Flush

I would suggest running a radiator hose from the pump inlet to the stat housing, completely bypassing the non existant radiator. Fill with water and a super flush and run for as long as your temp can hold it. Let it cool, Then run the running hose with the stat pulled to flush. Hose water will work but will only get a fraction of the potential gunk out. I really have to do the same, my slant is bright orange behind the water pump.

Ha, darter6 beat me to the punch!