Battling overheating new 360 build

DSMRossi said

6 vein pump, therm is a 180 I believe.

That actually leads me to another question, why would the thermostat temp setting matter if it's wide open at this point anyhow? I've seen people say how running a lower temp therm will help cooling issues, but I don't see how considering the thermostat is open whether it's a 160 or a 190 when you're running 200+ temps.

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You are running a pump for an a/c car. Unless you have an a/c car, with an a/c upper pulley, you are running the wrong pump.
Start with changing it out for an 8 vein.

In regards to the thermostat. A 160 will open quicker than a 180, circulating water quicker. In most circumstances, a 180 will be fine.
I like the high flow Milodon thermostat.

Start with the pump.
Also back your timming down to 34 all in.