Sorry I am a new members but want people help me:
I just buy a boost ,vacuum and oil pressure gauages.I check post already then I think i know how to install a boost gauge and oil pressure gauge.but i still don't know how to install my vacuum gauge.
My vacuum gauge is autometer mechanical one.I want to know which hose connect to gauge ?Is it same hose as boost gauge ?please help me that stupid question...

 

I'm not sure what you bought, but the boost gauge should show both boost and vacuum on it. You do not need a separate vacuum gauge! The boost gauge is usually hooked up to the unused nipple on the right hand side of the upper intake manifold. It will be capped off with a rubber cap.

You don't need an oil pressure gauge, the stock one works fine. In fact, didn't we already fix that problem in your last thread?

 

thanks rynberg so i will install both boost gauge and vacuum gauge