Brake booster vacuum source

[RobC76]

Sorry for asking but can anyone tell me if the source of vacuum for the brake booster is the port on the intake manifold of an LNF. Sorry I’m not the best as searching but I did spend a considerable amount of time trying lol.
Thank you

 

[KSLunsfo]

I'm thinking it is the capped one you've circled... However, I never actually ran the vacuum line for the short time I had the factory master/booster. I'm now running a Wilwood manual master w/o a booster and have that port plugged.

I'll try and check back w/ some old photos of when the engine first came out of my donor and see if I can make heads/tails.

Edit: Didn't find much useful in my own photos, but I did find at least one post calling that port out as the booster source.

 

[Rttoys]

That should be it. Looks like the only vac source on the intake.

 

[Traé]

Time stamp 2:10 in basic engine prep that port you have capped, the existing hose is trimmed, and the new vac line is attached. It is ironically the same line that is being held in the preview pic of the video! You don't even have to watch it haha.

 

[RobC76]

Thank you guys
Appreciate it. Didn’t think of the engine prep video.