Heater core hose hookup

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AuroraGirl

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So pulled my manifold to put a new one and had the hoses unhooked.... which hose from the heatercore goes to the manifold and which one goes to the water pump... I didnt take a picture haha.
 

Marcus

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So pulled my manifold to put a new one and had the hoses unhooked.... which hose from the heatercore goes to the manifold and which one goes to the water pump... I didnt take a picture haha.


Are your hoses in line vertical or horizontal? Should be the top hose goes to your water pump and the bottom hose goes to your intake.
 

TubeTruck

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If I'm not mistaken one is 5/8" and one is 3/4". Unless someone messed with it just match them up, but it's that way on the heater core inlet/outlet.
 

Charlie

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Upper hose (3/4") to intake.

Lower hose (5/8") to water pump.

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Dan Miller

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Without A/C. Mine is upper 5/8 to pump ,, lower 3/4 to intake
 

AuroraGirl

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Oh perfect, its probably different size. Still havnt tried to hook it up. I need to put the nipple for the intake manifold on the new manifold and find a plug for my thermostat housing. Thank you people!
 

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Save yourself future headache and use a brass plug, not iron.
 

AuroraGirl

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After this iron plug broke my breaker bar, and it took setting 3 on my huge milwaukee impact with a full battery... I get that. I already reused it but definitely going to put a brass barb in when I replace the hoses(pretty poor condition). Is that a 3/8?
 

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