I had to replace a hose on my 97 Z28.
It has this valve on it http://pg.photos.yahoo.com/ph/crazyp...cd.jpg&.src=ph
It goes here where I have the part number circled in red.
http://pg.photos.yahoo.com/ph/crazyp...7f.jpg&.src=ph
Now this valve has an arrow on it not seen in the picture.
I'm guessing that the arrow goes goes toward the heater core?
I think that line with the valve in it is the inlet side of the heater core and the arrow points to the flow of the coolant?

Thanks,

Chris.

 

Whenever you have a one-way valve just blow through it and you should be able to blow through the end with arrow pointing away from you, i.e, that hose is the "inlet" side so I would assume that the arrow (or water flow) would be towards the heater core (inlet side).

 

Yea that's what I am thinking too.
But it's not a one way valve.
It seams to be a flow regluator of some kind.
But I guess I will go with the idea that the arrow always points to the flow.

Thanks,

Chris.