What's the vacuum tank for? Where does it plumb to?

[dremu]

Passenger side on the firewall, nominally spherical gizmo with a vacuum line to it.

I assume it acts like a capacitor, and evens out any changes in vacuum from the carb?

Where on the carb do I want it to go?

-- A

 

[Russell]

I think it is associated with vaccum controlled heater boxes and stuff, so valves don't open / close when you floor the truck or something and have a low / no vaccum situation.

 

[readymix]

Cruise Control?

 

[dremu]

Cruise Control?

No cruise on this truck. General consensus is yup, a buffer to keep the vacuum stable for the heater vents and such.

-- A

 

[Backroads]

what year is the truck? does it have air conditioning?

 

[dremu]

what year is the truck? does it have air conditioning?

'74, yep.

-- A

 

[broncoman6524]

Is it this thingy?

I took mine out...from what everybody is saying it is a resevoir or something rather for the vacuum heater controls. how it was supposed to be hooked up. idont have a clue.