Inlet manifold heat

I have a chevy 235 with fenton header and offy intake. The bottom of the intake as a heat intake system. It is set up for water intake to heat the system. Does anyone know the proper set up? The inlet has two inlet ports. I know they are for hot water intake, but where should I hook them up to? I do have a heater core.

thanks
jason

 

It just goes inline with the heater.

I don't recall which way they go if supply or return. But I don't think it really matters and unless you spend a lot of time up in the Sierra navada range it isn't at necessary to run it at all.

The heated intake is for colder climates.