Man, I was hoping someone could help you by now. I know we have some 62 owners here.

Guys?

ok, in the meantime, Ive figured out what that valve does..... there are two diff size hose connections on the heater core itself... and same on the engine.
the water pump connection is larger (3/4) and the smaller one is up by the thermostat.
where the water pump connection is looks to me like it's cold coolant coming from the bottom of the rad... it's right alongside the large hose, and correct me if i'm wrong but cold coolant comes from the lower rad hose.

So, my thinking was that the hot coolant from the head, (just below the thermostat) should head towards the valve - not sure which side of that valve - but coming out of the valve it short loops down to the heater core, then the large hose out of the heater core back to the "intake" of the water pump.

qyestion, does the water pump push coolant into the engine block, or suck it out?

I hooked it up this way and it works, I do get warm air (excited for fall cruising!) but I m always looking to verify the right way!
cheers.

I have pics of 3 62 Chevys with that setup, a 235-6, a 327, and a 283. The hookup on all 3 are different. A 4th 62 which was a 235-6 when new and had that valve on top of the heater missing. Seems it doesn't matter much. All 3 are Canadian Chevys.

In the Chevy shop manual, the "deluxe heater" has the hoses hooked up like this. If you number the 4 hoses clockwise, #1 being the top left one, #1 hooks directly to #3. # 2 and # 4, the drawing in the manual doesn't show where they go, but they are different diameters as are the 2 hoses that hook to the water pump/block, so hook them to the correct sizes. I think it is #2 to the top/block and #4 to the bottom/water pump.

In my 62 Cdn Chev shop manual supplement, it says the deluxe heater was standard in 62, likely the same in a Cdn Pontiac. In 61, it was optional.

Don

-- Edited by DonSSDD on Wednesday 7th of October 2015 01:07:59 PM