I have a GM 454HO and just installed my CI Hood and CI components. My current set up has my Power Brake Booster vaccum ran off the carb (850) and my Intake Vaccum Fitting (with 2 fittings) has a line to the valve cover (PCV) and the M40 Transmission.

Does the Holley 850 (4150) Vaccum Secondary has more than one vaccum port that I could use to run the CI?

I guess I could just replace the IVF with one that has three ports, but if the carb has additional ports strong enough to operate the CI then I will just use one of them.

Thanks,
MAC