Overheating issues on a rebuilt 360

looks good and I think I see at least one electric fan there if you have a picture of that set up a little closer that would be interesting to see as well. also having an external fan blowing like a box fan a cheap one from Walmart blowing in creating error. And as mentioned the timing? I know it's hard to shut right out of the gate but once you get it running you can kind of twist it and get the timing right. Also like mentioned stuff you can't see like a broken impeller or something...
I always break in an engine with the radiator cap off so I can see the flow...