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Old 08-22-2003, 05:47 PM   #1
Jwill41
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heater hoses

I got a manual valve to put in the heater hose on the 67.

Which way does the water flow? (from the intake to the heater core or from the water pump to the heater core)

I want to put it in the hose that "goes to" the heater core to stop the hot water from getting in the cab.

Also, just to double check my truck, which hose (water pump or intake) goes on top and which hose goes bottom of the heater core?
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Old 08-22-2003, 06:16 PM   #2
SEVEND2
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hmm From the upper Rad hose to the intake, and back down in to Rad.
I run my heater hose Small hose to top of Core, and in the intake, and the larger heater hose goes from Rad. to lower conn.
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Old 08-22-2003, 06:19 PM   #3
jef5150
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dont you need to know if its an auto or manual,,,,,,i think they are hooked up differently
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Old 08-22-2003, 06:24 PM   #4
SEVEND2
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true, might be some diff. in them
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With a 1972 Chevy Custom-10 Long bed w/350cid th350, (under-construction).

Progress on truck so far (follow link):
http://67-72chevytrucks.com/vboard/s...ad.php?t=51051

and stage 2

http://67-72chevytrucks.com/vboard/s...ad.php?t=58132


~ "Why couldn't you have just put the bunny back in the box?" ~
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Old 08-22-2003, 07:21 PM   #5
jef5150
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here.........

ya there is a routing difference,,,,,,,,,jeff
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Old 08-22-2003, 07:27 PM   #6
Gordo
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Smile

The flow goes from the intake manifold fitting to the lower heater connection, out the upper heater connection and back to the water pump (without a/c) or back to the radiator (with a/c).
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Old 08-22-2003, 08:33 PM   #7
ddsmith
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That is strange,
My 69 C20 with A/C has the return hose going to the water pump. Maybe it is a year specific thing.
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