plugs

  1. B

    Buick 455 intake manifold 1973 plugs?

    Hi everyone, I own a 1973 Buick Centurion 455 and I wonder what are those plugs resp. holes inside the intake manifold just underneath the carburetor for? I've attached a photo from the internet of a 1971 manifold, cause in my intake manifold aren't those plugs. It seems like there were holes...
Back
Top