69 Camaro L78 intake manifold vacuum fitting- how many ports?

[L78 Fred]

1969 Camaro 396/375 L78
SS/RS with M40/T400 and Power Disc Brakes

#163 Intake rear fitting, How many vacuum ports?

I have a number of 163 manifolds and vacuum ports ( from 1-3) and cant remember how many ports are required for the above options

1 Threaded for the Power disc brakes and one or two for the M40 Auto trans and RS?

Thank you
Fred

[1971ls6]

You need one screw in for the pb and a nipple for the 400, and I assume another for the rs

[firstgenaddict]

You need one screw in for the pb and a nipple for the 400, and I assume another for the rs

Yes the PB fitting with a pair of nipples off the other side. The main vacuum line for the RS comes down on the passenger side of the distributor.

[L78 Fred]

Thanks Guys!
Greatly appreciated