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What does this hardline go to/do

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Old 12-30-20, 11:49 PM
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What does this hardline go to/do
I was taking everything out of my engine bay a few days back and just realized I don’t remember what this line goes to/does. If anyone knew that would be great. This is from an ‘80 sa.


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Old 12-31-20, 05:37 AM
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It's the vacuum pipe for the brake booster. It connects to the intake manifold and provides vacuum for the brake booster.
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Old 01-02-21, 06:07 PM
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The Visual:
Attaches to a fitting that is on the back end of the intake manifold...




Stu A
80GS
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