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Old 01-27-2023, 06:41 PM   #8
leftybass209
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Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,186
Re: Thermostat Housing Switch

The 350/350 in my 72 had the original intake, water neck, and quadrajet, and was an A/C and CA emissions born truck, but no extra provisions in the cast iron water neck.
I only lend the extra info because as we've found out on these trucks before... sometimes it's just a goofy combination of parts ordered that requires different parts like this.
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