360 running hot…very hot

aside from the sender being possibly no good, that isn’t a shroud really at all And it appears to be a lazy flow radiator that the inlet and outlet are on the same side. Even some oem big block rads are lazy in that the lower hose is on the drivers side and the upper is kind of in the middle. Ideally a cross flow would be much better like the champion cc526 rad. 526

I know your radiator may be new, but it also too small, you should have a 22” one in there with a top and bottom tank. Get rid of the side tank jobby you have in there now. The fan is also too small. The shroud you have is blade guard, won’t do anything to help cooling.

I think you should start Over with the right stuff and you will have zero problems moving forward