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66CHEV · 10-08-2013, 11:14 AM

dont know if this makes a difference or not but the lower port where i have the vac advance hooked up is a type of port that has a small metal line with a threaded end that screws into the port. there is a small screw with a spring directly above the port that adjusts the flow of air. the other one is just a smooth stub that you would slip a rubber vac hose onto.

10-08-2013, 11:14 AM	#13
66CHEV Registered User Join Date: Oct 2007 Location: Western Kentucky Posts: 85	Re: Cant drive 55 Literaly dont know if this makes a difference or not but the lower port where i have the vac advance hooked up is a type of port that has a small metal line with a threaded end that screws into the port. there is a small screw with a spring directly above the port that adjusts the flow of air. the other one is just a smooth stub that you would slip a rubber vac hose onto.