Vaccum lines

[Joe b]

81 c-10 305. vacuum lines are a mess. Got truck EGR has delete plate. Most hoses are so spongy almost collapsed.Not concerned about emission. Anyone know if replacement hoses are avail as a set ?

 

[Gander]

They’re not available as a set as far as I know. Best just to get a couple feet of 3 different sizes, trim to fit, and replace them all.

 

[75gmck25]

Do you have the emissions decal for your truck? It would make it much easier to figure out how many of the hoses really need to be retained.
For example, one vacuum line is used for the thermac sensor on the air cleaner, to control heated vs fresh air into the carburetor. If you don’t still have the fresh air hose and/or the heat stove on the exhaust manifold, that vacuum line serves no purpose.

 

[Joe b]

What about the valve that screws to the front of the manifold is that necessary ?

 

[Goldie Driver]

What about the valve that screws to the front of the manifold is that necessary ?

Like this ?

Google Search

If so, it depends on what you are leaving connected.

 

[Ricko1966]

305s like to have EGR. shoot several pics of what you have going on we can walk you through this.

 

[Joe b]

Yes ,I will send pics tomorrow