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Old 11-22-2007, 07:52 PM   #1
ibad57
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Heater hose Question

What are the two sizes hose required on 72 c 10 v8 for the heater core I need to buy two pipe outlets for the engine and water pump?????
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Old 11-22-2007, 08:01 PM   #2
tcb-1
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Re: Heater hose Question

you'll need 5/8" and 3/4". 3.5' of each depending on how you route them.
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Old 11-22-2007, 08:05 PM   #3
WorkinLonghorn
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Re: Heater hose Question

5/8" and 3/4"
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Old 11-22-2007, 08:23 PM   #4
chipflyer
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Re: Heater hose Question

5/8 from the intake to the lower heater core fitting, return to the water pump or radiator from the upper heater core fitting with the 3/4 hose.

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Old 11-22-2007, 09:22 PM   #5
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Re: Heater hose Question

And the threads will be 1/2 NPT
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Old 12-30-2007, 07:54 PM   #6
myraley
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Smile Re: Heater hose Question

Sorry to just in, but I had a related question. Would that same routing be true on a 454 big block? Or does that just apply to small blocks? I am trying to route the hoses on mine because when I bought my truck, the heater core and hoses were all missing. I was thinking of just having both hoses go to the water pump. Would that be ok? Thanks!
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