Overheating issues on a rebuilt 360

Always over 2k with a little bit of up to 2500 and back down every couple of minutes.. slowly...
It can "spike" BUT it should go back down..
If it hit 220 and climbing shut down...
If you can have a home fan in front of the radiator, that helps..
Start it with the cap off and "see" the water circulating... keep refilling even if it overflows...
As heat is trying to spike have a water hose running slowly and carefully run it over the radiator.. some might hit the fan and fly..lol.. don't be afraid.. it's just water it ain't going to hurt nothin...
Should I keep the radiator cap off even when the car is at 180 cause when I do that while holding the car at 2000 the coolant just starts to shoot out, not sure if you got to see the video I put before but when you get a chance please lmk if that’s the timing I’m supposed to have the indicator on the harmonic balancer only goes up to 10 So I wasn’t really able to get a 100% accurate reading on that