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Vacuum lines to carburetor 1979 chevy van with a 305 2 barrel

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On my 1979 chevy van with a 305 the intake manifold has a small plate with 2 vacumn lines going to the carburetor. What is this and what does it do?


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    Hello, maybe this can help you out?

    chevrolet 77 vacuum lines

    Ask A Mechanic Admin - Apr 05, 2018 |Reply

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