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Old 09-03-2017, 12:55 PM   #3
71CHEVYSHORTBED402
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Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,385
Re: Heater core with A/C question

I only know of a gasket between the heater box and firewall. That's how I found it, but the heater core was replaced once before.
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Tony

71 Custom Deluxe, SWB, 2WD, 402, A/C.

I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025
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