The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Missing Quadrajet Vacuum Port: Plug or Replace?

geezer#99 · 10-03-2016, 02:01 PM

Don't matter which port you use when you break in your cam.
With the rpm cranked up the ported port is exposed fully to manifold vacuum.

If you want a custom carb then look here.
https://www.smicarburetor.com/

10-03-2016, 02:01 PM	#5
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,777	Re: Missing Quadrajet Vacuum Port: Plug or Replace? Don't matter which port you use when you break in your cam. With the rpm cranked up the ported port is exposed fully to manifold vacuum. If you want a custom carb then look here. https://www.smicarburetor.com/