Heater core Hoses go where? <> top/bottom - The 1947 - Present Chevrolet & GMC Truck Message Board Network

johnnyclack · 09-16-2013, 02:00 PM

Heater core Hoses go where? <> top/bottom

I pulled the heater core on my 79’ K-30 w/AC some time back. Now that I did not take any Pick’s which hose goes where..........

Thanks’ Fellows

dieseldawg142 · 09-16-2013, 04:03 PM

top hose goes to rad. or water pump, bottom hose goes to intake

INSIDIOUS '86 · 09-16-2013, 05:21 PM

You want it to flow up so it will blow out any air bubbles
Posted via Mobile Device

raceman6135 · 09-16-2013, 06:10 PM

Another way to tell is that the inlet and outlet are different sizes: one is 5/8" and the other is 3/4". Match the heater core to the corresponding size nipples on engine/water pump/radiator and you're set.

johnnyclack · 09-17-2013, 06:36 AM

Quote:

Originally Posted by INSIDIOUS '86

You want it to flow up so it will blow out any air bubbles
Posted via Mobile Device

Good tip; Thanks I was not aware of this fact

johnnyclack · 09-17-2013, 06:40 AM

Quote:

Originally Posted by raceman6135

Another way to tell is that the inlet and outlet are different sizes: one is 5/8" and the other is 3/4". Match the heater core to the corresponding size nipples on engine/water pump/radiator and you're set.

If only life would remain this simple

The P/O has upgraded both hose’s & fittings to match ¾” .

Not sure the gain here, if any ?

09-16-2013, 02:00 PM	#1
johnnyclack Registered User Join Date: Aug 2012 Location: On the banks of the Clackamas River, Eagle CreeK Oregon Posts: 387	Heater core Hoses go where? <> top/bottom Heater core Hoses go where? <> top/bottom I pulled the heater core on my 79’ K-30 w/AC some time back. Now that I did not take any Pick’s which hose goes where.......... Thanks’ Fellows

09-16-2013, 04:03 PM	#2
dieseldawg142 Registered User Join Date: Jul 2011 Location: back 40, bc Posts: 3,903	Re: Heater core Hoses go where? <> top/bottom top hose goes to rad. or water pump, bottom hose goes to intake

09-16-2013, 05:21 PM	#3
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: Heater core Hoses go where? <> top/bottom You want it to flow up so it will blow out any air bubbles Posted via Mobile Device __________________ 377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511

09-16-2013, 06:10 PM	#4
raceman6135 Dino burner Join Date: Nov 2002 Location: Calgary, Alberta, Canada Posts: 602	Re: Heater core Hoses go where? <> top/bottom Another way to tell is that the inlet and outlet are different sizes: one is 5/8" and the other is 3/4". Match the heater core to the corresponding size nipples on engine/water pump/radiator and you're set.



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