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heater hose
#1
I read the thread about the heater routing, but I want to make sure I am good to go. Oh before I start my fuel tank and por 15 showed up right now so I am pumped.

Now if I am standing in front of the car looking at the firewall I have two ports left and right.

One of those two ports should take a heater control valve, I dont know which one. I bought the new black one you can see it laying on my left shock tower it has a in and out just had to see. What side does it go to.

Now I have the two exit pieces one for my pump and the other the block.

Now which one does the heater control valve get hooked to? I would assume the right and pump, but I will work on the tank cannot run the dam thing without gas anyways.

Thanks again guys sorry for the dumb questions


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1973 MACH ONE H CODE "RUSS"
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#2
The question is not dumb at all. I am also interested in the answer.

My heater and A/C hoses were gone when I bought the car and I have no clue which hose goes to which heater core tube.
Engine is a 351C, car has A/C.
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#3
well I know the one off the pump goes to the heater control valve, but not sure which one it attaches to. Also I just figured out that you do need the l tube for the pump a reg one is bent way to far.

1973 MACH ONE H CODE "RUSS"
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#4
Hope these pictures help. The hose w/switch connects to right heater port although it likely does not matter. This how my '71 Grandé is connected.

mike

   

   

[Image: 1_11_11_13_11_50_27.png]
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#5
did you use the L shape hose coming off the pump

1973 MACH ONE H CODE "RUSS"
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#6
Just generic heater hose you buy by the foot.

mike

[Image: 1_11_11_13_11_50_27.png]
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#7
From the front looking rearward; left heater hose goes to lower nipple in the front of the block. The right heater hose has the control valve in it at the end of the S hose. The hose continues to the top nipple in the water pump. The lower threaded hole in the water pump is for the ported vacuum switch. Info from 1972 assembly manual, page E2Z-695-11. I hope this helps. Chuck
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#8
So do I have to put that vacuum switch or can I run two straight hoses?. I tried them both and they are regular hoses non l shape and they both look like they will work. Are u guys running them over or under a/c lines

1973 MACH ONE H CODE "RUSS"
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#9
Good question. The heater hose vacuum switch is used to prevent hot water from deluting the effects of the A/C.
When the A/C is on the switch closes so no hot water is sent to the heater. We put the valve in the line for purely
cosmetic reasons as the A/C has been removed.

mike

[Image: 1_11_11_13_11_50_27.png]
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#10
I will post some pics and maybe a few people will do the same I have the control valve good to go but I am rocking some a/c so... I just dont want to put that dam thing on if I dont have to it is just ugly, and I think regualr hose will work just fine, just like you said good

1973 MACH ONE H CODE "RUSS"
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