Big block running hot. Can’t figure out the issue

[nvrenuf]

Maybe check the radiator real good for flow. Possibly flush it for good measure?

What about belt routing, I've seen serpentine belts that could route differently than intended. Could the belt be driving the water pump in the wrong direction?

It would be a last resort since it would be pretty involved but maybe pull the water pump and compare it with another to verify the pump impeller is correct / reverse rotation?

 

[85K304SPD]

Show us some pictures of your set-up. Mainly the serpentine set up.

 

[Slooptin]

Maybe check the radiator real good for flow. Possibly flush it for good measure?

What about belt routing, I've seen serpentine belts that could route differently than intended. Could the belt be driving the water pump in the wrong direction?

It would be a last resort since it would be pretty involved but maybe pull the water pump and compare it with another to verify the pump impeller is correct / reverse rotation?

I’m planning on pulling it and taking the cover off to inspect.

Show us some pictures of your set-up. Mainly the serpentine set up.

Once I get home I can snag some pics

 

[squaredeal91]

I'm wondering if it's not the head gaskets covering up a water port? Total shot in the dark but it can happen.