I have a Victor Jr and need to put the vacuum port that I have at the rear of my existing dual plane manifold in it for my vacuum modulator and heater controls. Where is the correct spot that would not interfere with air flow?

Should be a large diameter vacuum nipple on the backside of your carb.

I tapped 2 lines into the side of the plenum where it V's its pretty thick there & it worked out real nice. on the Right side is the line that goes to the trans modulator & on the left side it goes to the VAC/Boost gauge.

My HP style carb does not have a vac line off of it, the vac has to come from the Manifold.

Bob

Originally posted by hoffbug:
Should be a large diameter vacuum nipple on the backside of your carb. I am using that one for the PCV valve.

This thread might be of interest to you..
http://www.chevelles.com/cgi-bin/forum/ultimatebb.cgi/topic/4/22262.html?

Put the vacuum line in the back of the 1" open spacer that you should be running if you are not already ;) right below that 3/8" nipple in the carb.

Originally posted by loosend:
</font><blockquote>quote:</font><hr />Originally posted by hoffbug:
Should be a large diameter vacuum nipple on the backside of your carb. I am using that one for the PCV valve. </font>[/QUOTE]Just run a "T" fitting.
I have both the PCV, and Brake Booster running off the rear nipple of the carb with a "T" fitting.
No Problems graemlins/beers.gif

I have the Vic jr/hp950 combo.
I bought a 1" space and tapped it for a fitting, and ran a T - One side to the PCV, the other to the Power brake graemlins/thumbsup.gif