I noticed that the Edelbrock 1400-series carbs have a side/rear connector labeled Power Brake Vacuum. My PB vacuum line goes to my intake manifold. Anyone have an opinion on pros/cons of either connection?

I don't think it matters. Should be the same amount of vacuum, probably just your preference for routing the lines. I know some people use the intake manifold vacuum port for the transmission modulator. All the vacuum ports should have the same vacuum with the exception of the ported vacuum port on the front of the carb, which you definitely wouldn't want to use.

Yep, using ported vacuum for Brake vacuum would be interesting indeed.

A pal sent me this great link explaining everything you would ever want to know about VACUUM:

http://www.linnbenton.edu/auto/perform/vacuum.html

Good link.

I have an edelbrock performer RPM camshaft 7157 and as far as I can tell it's just a regrind of the Pontiac 041 ( 9794041) cam. I'm at about 14" of vacuum in my 400 ci. Ought to make my power brakes a bit interesting.

If don't have enough, can add a vacuum can. Had one on mine. Worked good.
After loosing a P/S line at the track, decided to delete both P/B and P/S.
Turned out, like the feel of both better.

Checked my intake manifold PB line last evening and its reading a solid steady 14.

Good call on the vac canister I was researching those a bit, but figured I would just wait and see. In retrospect I should have just left them as manual brakes, but converted to discs. Oh well. Live and learn. I was also thinking about the rhoads variable duration lifters to boost the vacuum, but that seems like a lot more work than just a canister.

I read that 14" vac is the minimum (for my 11" booster right stuff kit), but the y work best at 16-18 and up. I guess we'll see. Hopefully have the new brake lines installed, bled, and have this pup back on the rd by the end of this weekend.

J, the paperwork that came with my new MC/Booster assembly stated same, 14" minimum.

My stock booster worked fine on the 11" at idle that I had before. So you probably have some wiggle room.