I think I'm getting it!

I should hook the heater core to the lower of the two holes on the thermostat housing, right? That's the hole below a closed thermostat. The hole above the thermostat will only get flow after the stat opens.

Does it matter which of the two holes on the water pump is hooked to the heater core? Looks like a toss-up there.

Thanks, again.


1948 3/4-Ton 5-Window Flatbed Chevrolet

34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.