Heater water control valve

[Miles]

I searched for this, but couldn't find an answer. I want to be able to control the flow of hot water off to the heater core after I do the V8 swap in my 240z. Three questions:

 

1. The flow of water to the heater core is from the outlet on the intake-correct?

 

2. The heater return line connects to the nipple on the SBC long style water pump-correct?

 

3. What heater water control valve works best with the engine swap?

 

Any pictures?

 

Thanks

 

Miles

[ron adams]

are you considering a manual shut off valve ( four seasons #84706, 84707) or something you control from inside? Using www.4s.com and you can view pictures of these part numbers.

[Miles]

I am looking for a water control valve that I can hook the original Datsun heater water control cable to.

[bjhines]

In my 240Z...

I used the original heater control valve and I ordered a brand new set of heater hoses to fit the 240Z control valve.

I cut them off near the firewall and ran a section of 5/8" hose to extend them to the V-8 bungs.

[BillZ260]

At first I used the stock Z control valve too, should work fine for you. Mine was leaking so I replace it with a 1/4 turn ball valve.

[Miles]

I'll use the original valve next to the heater. I was looking at my stock L24 heater lines and noticed that the bottom hose has a direction arrow indicating the inlet hose to the heater core.

 

The outlet coming off of the SBC intake manifold is the the one that feeds the heater core and the heater return line connects to the nipple on the long sytle water pump.

 

From what I have read it doesn't matter which hose gets the control valve. However, I would rather that I could cut off water flow into the interior since it gets plenty warm in there already.

 

 

Thanks