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reaaaly depends... goto www.autozone.com (register ur name n vehicle) go to expert guides, find vacuum diagrams (theres about 100 diagrams from past-present vehicles) and find yours.

you will need to know what carb (if carburated), 2wd? 4x4?, 305 5.0? 350 5.7? etc... each year ha s multiple diagrams, when u find yours, goto your motor, compare, and you should find your answer

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Q: Need to Identify a vacuum port on a 86 Chevrolet pick-up 305 intake?
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