heater hose orientation - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jbgroby · 12-16-2015, 12:34 PM

Possible stupid question. I know that our heaters require two different size hoses. does it matter which hose size fits on top or bottom of the block? In seeing pictures of other truck engine compartments, it seems I may have my hoses 'flipped'. Both fit onto the connections with no leaks. I have a simple pass through core, no ranco valve setup.

Figuarus · 12-16-2015, 12:46 PM

if i'm not mistaken, the 3/4 hose runs to the water pump, and the 5/8 hose runs from the intake manifold.

12-16-2015, 12:34 PM	#1
jbgroby Registered User Join Date: Nov 2008 Location: Lacombe, LA Posts: 2,770	heater hose orientation Possible stupid question. I know that our heaters require two different size hoses. does it matter which hose size fits on top or bottom of the block? In seeing pictures of other truck engine compartments, it seems I may have my hoses 'flipped'. Both fit onto the connections with no leaks. I have a simple pass through core, no ranco valve setup. __________________ http://s1299.photobucket.com/user/jb...23904108567829

12-16-2015, 12:46 PM	#2
Figuarus Registered User Join Date: Sep 2014 Location: Salt Lake City, UT Posts: 346	Re: heater hose orientation if i'm not mistaken, the 3/4 hose runs to the water pump, and the 5/8 hose runs from the intake manifold. __________________ 2013 Malibu LTZ 1996 C1500 4.3/5spd 2wd



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