vac ports on q-jet

[kaiser715]

I need to pull manifold vacuum from my new quadrajet....where do I grab it?? Is there a port on the q-jet where I can grab it, or on the manifold itself (too lazy to open the hood right now.

carb has the following ports:

Diverter port (not used)
EGR Port (not used)
PCV Port (in use)
Canister Purge (not used)
Distributor Port (in use)
Power Brake Port - 1/4NPT (not used, but will prob. go pwr brakes in future)

This is for dual-fuel conversion...manifold vac to a vacuum solenoid, when "on" it puts vac. pull on mixer diaphragm to lift it when running on gasoline.

[fisherman]

Hook up your vacume gauge at idle to one of the remaining ports to see. I have a Q jet and was able to pull off one of the ones I'm not using. Not sure the correct application for each port. I have 19 lbs of vacume at idle, it was very steady. It helped to to fine tune the Q jet and make sure the engine is happy. I like mine, good luck.