1987 F150 4.9L - Whats this part?
 

Hi Guys,

I am refurbishing a 1987 F150 Custom 2WD i6 4.9L.
I had to replace the exhaust manifold so had to remove the intake manifold first.
While doing so, I broke several "tube", or "lines" shown here in the pictures.

I dont know much about engines, I have just been doing my best. I need to replace these "lines" but I have no idea what they are called in order to order them.

Could someone please help me identify the parts I am pointing out and explain what they do?

https://i.imgur.com/YVRHaxO.jpg
https://i.imgur.com/QcVWf66.jpg

i'm not sure but i think that is a fuel pressure regulator vac line

I agree the red vacuum line does seem to go from the intake to the fuel press reg.
The other two vac controlled pieces appear to be parts of the "Thermac" system which controlled air from the air pump that was routed to the exhaust manifold when the engine was cold then routed to the cat converter once a certain temp was reached That was the Diverter (TAD)valve. All this was part of the emission syst. There was the thermal air bypass valve (TAB) that when decelerating would route the air back to the air cleaner to prevent a backfire condition. That is the valve you have circled with no vacuum line connected to it.There should also be some check valves in the lines from the air pump to prevent destroying the pump and hoses in the event of a backfire. If you trace the hose from the valve you have circled, you will see one of the check valves to also protect the valves from a possible backfire. It was one of those times when a whole bunch of things were added to the system to control emissions. Did you notice if the vacuum diagram was still around under the hood? Depending on what you decide to do, will try to locate a diagram, might have that. You may not be able to get all the necessary parts to make it work,don't know . Have seen where it was all removed.