1966 390 vacuum question

[OctaviousMonk]

I have a new to me 1966 with a 390, no AC and manual everything inside. Can anyone tell me where this is supposed to be connected to? Rubber hose is connected to the carb but this metal end is just floating in the breeze. Thanks for any help.

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[lcboyer]

My guess is vacuum advance on the distributor

 

[OctaviousMonk]

This is pointing towards the back of the engine. Just checked to be sure and my distributor has a hard line that’s connected up directly.

 

[lcboyer]

Maybe transmission?