Help Identifying engine elements

[Jacksonrobinson]

Hello, new C10 owner, and I'm trying to do some engine clean-up. I need help identifying two engine elements, that both seem to be pulling vacuum. Please let me know what they are and if and where they need to pull vacuum from. I couldn't seem to find them on the vacuum diagram. I've also included my C10's vacuum diagram if it helps.

1980 Chevy C10 305 TBI

Thanks for your help.

 

[matt4426]

The thing in the first picture is the vacuum reservoir for the AC unit. The dampers are vacuum actuated. Not sure about the 2nd picture. Maybe vacuum switch/sensor for transmission?

 

[PrairieDrifter]

Do you have a turbo 400 trans.

 

[Jacksonrobinson]

Do you have a turbo 400 trans.

I have a Turbo 350 sir.

 

[Jacksonrobinson]

The thing in the first picture is the vacuum reservoir for the AC unit. The dampers are vacuum actuated. Not sure about the 2nd picture. Maybe vacuum switch/sensor for transmission?

Ok thank you, do you know if the AC Vacuum reservoir needs port or manifold vacuum?

Thanks for your help.

 

[saltdog]

Second pic is the torque converter lockup switch, lower right in the diagram pic 3

 

[Dave M]

Ok thank you, do you know if the AC Vacuum reservoir needs port or manifold vacuum?

Thanks for your help.

Manifold !