440 overheats once and then it's happy all day

I'm going to check the "internal bypass" and drill some 1/8 holes in the tstat. I didn't know it had some type of internal bypass, the crappy 440 source water pump housing might not even have it.

I bought a meziere electric water pump for it, not because of this issue but because I will be relocating the alternator soon, and that's one extra pulley I don't have to deal with. It's 42gph and the heavy duty motor so it should be plenty flow. I'll be relocating the alternator because it's getting two turbos one day... But that is another story in itself lol.