I will try that but haven’t noticed bubbles when I have filled it several times and tried running it. Thanks
Do you have the thermostat back in? If not is there a lot of flow into the radiator or not?
So it has not really overheated has it until after the repair? If not then I would presume the head is fine unless you have ran it for some time while it was hot. I assume you have not and you knew it was overheating during the post repair test run and you have been shutting it down as soon as you know it is overheating.
Since it is overheating with two different pumps then I would suspect that the belt is slipping if not a brand new belt (you don’t mention that it was replaced).
I am out of ideas but you can try to remove all the hoses and thermostat and see if you have water flowing from the bottom radiator hose up through the engine block (use a garden hose). And then from the top out the bottom (reverse flow). I don’t know how it would be clogged but that’s all I have left