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66CHEV · 10-08-2013, 10:41 AM

I am gonna go out on an limb here and say it is ported vac. there are only two vacuum lines on the motor. One comes out of the top of the intake manifold and that is plugged to a pcv valve in the top of the valve cover. the line that is running to the vac advance is a very small line that is connected to a port at the base of the carb. there is another vac port on the carb located on the upper body that is plugged off. could i possibly be going to the wrong port.

10-08-2013, 10:41 AM	#10
66CHEV Registered User Join Date: Oct 2007 Location: Western Kentucky Posts: 85	Re: Cant drive 55 Literaly I am gonna go out on an limb here and say it is ported vac. there are only two vacuum lines on the motor. One comes out of the top of the intake manifold and that is plugged to a pcv valve in the top of the valve cover. the line that is running to the vac advance is a very small line that is connected to a port at the base of the carb. there is another vac port on the carb located on the upper body that is plugged off. could i possibly be going to the wrong port.