Looking good... I have a suggestion... Since your radiator is now clean you need to realize the block is full of stuff that is gonna wind up plugging that nice clean radiator....
First & foremost I would suggest a coolant filter in the upper radiator hose... Every time I do a project I install one, but only for a few months till the filter stays clean.... Then I install a new upper hose with no filter...
https://www.amazon.com/Champion-Coo...07&keywords=gano+filter&qid=1571329149&sr=8-8
If your somewhat motivated pull the thermostat & reinstall the upper hose then backflush & with your garden hose till the water coming out the lower hose is clean..
If your really motivated pop the most accessible freeze plugs & flush, the huge advantage to this is the debris doesn't have to rise up 2+ inches before it can escape the block...
Depending on what you find when you pop the plugs you might want to pull the starter & pop the plug behind it, the worst deposits are usually at the back of the block...
If you keep your hand in the water flow as your flushing you'll feel hard debris bouncing off your hand long after the water looks clear....
Yes, excellent suggestion. Before the snow hits here I’m going to push it out and flush the system. I’m going to go through all of the systems this way, they all need new fluids, lines, hoses, belts and grease. It’s been a looong time since any of this has been addressed. On a good note, it does run and the carbs have been rebuilt just recently by the nephew.
Thanks for chiming I’m with this suggestion, I might have overlooked that in the face of progress!