Was under the hood — so took a minute to look around and — very slightly tighten down —all hose clamps regarding the vacuum hoses and the fuel line hoses 

Glad I did that —as I notice that the aluminum splitter at the rear of my Edelbrock Carb ( or the stock  Carter carb  ) of my 64 - 429  was not as tight as it could and should be 

This is the vacuum line for both  the brake booster and the shifting of the Turbo 400 trans —-so a very important vacuum line for those reason 

Removing and inspecting the connections I saw that the plumbers tape I used to seal the treads   ( in 2006 )  had broken down over the years so cleaned all threads and installed new plumbers tape and fixed my issue 
Very important to have a good vacuum seal ( air seal ) at that connection due to the importance of the two system it controls 

Just a heads up as that was what I found poking around today l


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Agreed. Vacuum is used to control a lot of stuff on our cars. Even a tiny leak can affect operation. 

Suggestion: If you've already replaced the hose, thread sealant, checked for other breaches in the system, etc, and still have a leak...try double-clamping the connection. 

Same is true on heater/radiator hoses. Double-clamping has helped me out many times over the many decades. 



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