I'm not running a heater core. Do you just cap the water pump outlet and the intake inlet thats in the passenger side rear of the intake? I see some run lines from the back of the engine to the thermostat housing

 

Yup.

- Eric

 

Yes. Just cap the water pump and intake using pipe plugs. The rubber caps that are sold may not last long. Some will say that running a hose from the water pump to the rear of the intake will give better circulation and cooling. I have not noticed a difference either way.

 

Just to confirm that there is no need to run a hose from front to back, factory heater-delete cars did not use a hose. The ports were simply plugged.