what is the vacuum tree and lines on the bottom of the upper intake?

[bcmbcmbcm]

Hey folks,

I am putting one 5.0 back together stock and one a little modified..both are using stock upper intakes (one is ported). What are the vacuum lines and tree on the bottom of the upper intake manifold?

 

[4G-KDMP]

Are you asking where they go?

 

[MustangLX-5.0]

Chime in what I know. 2 small vac lines on the back, 1 goes to the FP reg, the other is a 2 way splitter for the smog control. Large line on back goes to the vac tree on firewall. One med size hose on front goes to charcoal canister. I know there is a hose that goes to the MAP sensor on speed density models.
EDIT - correction
The tree at the firewall has these connections. Starting with hose from intake, the next port is labeled B/R and has a cap on it, after that, one small line goes to air vent diverter control for A/C and heat, one med size hose labeled S/C , that goes off towards the drivers fender, I have no idea what that is for. Thats the only vac line I never found out. Anyone else know what that is for? The last hose is for the brake booster.

 

[4G-KDMP]

Chime in what I know. 2 small vac lines on the back, 1 goes to the FP reg, the other is a 2 way splitter for the smog control. Large line on back goes to the vac tree on firewall. One med size hose on front goes to charcoal canister. I know there is a hose that goes to the MAP sensor on speed density models.

The tree at the firewall has these connections. Starting with hose from intake, one small line goes to air vent diverter control, large hose goes to brake booster, and one med size hose on the end. Yes , the one on the other end of the tree labeled something like ... S\C , that goes off towards the drivers fender, I have no idea what that is for. Thats the only vac line I never found out. Anyone else know what that is for?

S/C--stand for speed control, otherwise known as Cruise Control.
That vacuum line goes from the T to inside the drivers side fender and attaches to the Speed Control/Cruise Control servo which bolted to the inner fender behind the splash shield near the drivers side door.

 

[MustangLX-5.0]

Ahh..ok. Do you know what the B/R capped off one is for?

Sorry, not tryin to hijack thread.

 

[4G-KDMP]

Sorry but I can't help you with that one.

 

[bcmbcmbcm]

Oh shoot...

I am trying to post a pic but I can't...

I am building two 5.0s. one 'stock', speed density, stock cam, stock intake, stock throttle body, E7s.

What of these lines should I replace while the whole intake is off the car?

The second 5.0 has thumper E7s, a Jay Allen Cam, and a TMoss intake. This will be mass air but has no charcoal canister or smog pump as it is going into a 74 bronco.

I am trying to determine, at this point, what I should get to refresh the old stock lines for the Speed Density car (I have the old stuff, it is kind of crummy),
and what I should buy for the Mass Air car.

I hope this helps, and thank you all for your input!