Will heater core go in upside down?

[dave brode]

All,

I believe that I installed mine upside down in my '71. The 3/4" fitting is on the bottom, the 5/8" on top. My truck has a radiator with the return snout on the tank, which is for 3/4" hose.

I have it hooked up now, but it seems that the coolant does not flow through the core like it should. The flow from the engine goes to the top of the core, the bottom snout on the core goes back to the rad tank.

Do I have it upside down?

Remind me how easy the heater housing is to remove, please. I assume remove inner fender, and it'll come off. Will the blower motor clear the hood hinge?

Thanks much in advance. This is s great site.

Dave