08-16-2016, 10:39 AM
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#3
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,785
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Re: Another “What is that for?” question
Road draft tube cap.
Used on the last 327's to hook an inline pcv to the carb.
Like in this diagram.
http://www.corvetteforum.com/forums/...pcv-valve.html
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