Heater hoses

Tiny
BOTIBILL
  • MEMBER
  • 1984 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 75,000 MILES
I have a shut off valve in the small hose and I want to put a ball valve shut off in because the old one drips a little water. Is the small heater hose the inlet and is that the one I should put the shut off valve in? And what size is the small heater hose usually? I’m thinking 5/8 inch. Any help would be appreciated.
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Saturday, October 12th, 2019 AT 3:39 PM

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Tiny
DANNY L
  • EXPERT
Hello, I'm Danny.

Yes, The heater hose size is 5/8. The inlet to the heater core is the hose coming off the water pump. The return line from the heater core exits to the intake manifold. Hope this helps and thanks for using 2CarPros.

Danny-
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Saturday, October 12th, 2019 AT 4:58 PM

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