Hi,My engine is a stock 1986 tpi 305I'm planning on replacing the old broken plastic vacuum tubes, rubber connectors and hoses, but I guess modern vacuum lines are used today to replace the outdated plastic tubes that GM used in the 80s.

For this reason, I ask for your help in deciding the best current solution alternatives for vacuum lines.
Thanks in advance,

 

I would use this site to look up part numbers for the plastic stuff to replace:

http://www.austinthirdgen.org/parts/html/main1.htm

I measured the ID of the hoses that needed replacing with digital calipers, then went to my local auto parts store and told them how many feet of it I needed.

 

I use regular vacuum hose; the same that has been used for the past 50 years or more...

 

 

Same, regular vacuum hose worked good for me when the old stuff got brittle and started to break.

 

But, common rubber hoses or special silicone hoses?

(some e-bay chinese silicone hoses collapse with the engine vacuum. Hoses having thick walls are required )


Thanks

 

Regular rubber vacuum tubing...

 

Tygon works great and it comes in a pretty yellow color.