smog tube inderts

[Richard]

Working on a pair of 345 heads: noticed that there are straw sized tubes (about 3.5 inches long) inside the exhaust port. I figure these are the air injector smog tubes. The ones that I see look pretty much corroded. Where do I find replacements? Any ideas?

 

[Scout-It-Out]

I know what you mean. It's the middle one in this picture. I'd call IH parts and see if they can get 'em. I May have some used ones if new aren't available.

I'm guessing you have to smog? If not just plug them off.

 

[Richard]

Yup, that be them.

 

[Richard]

Trying to attach picture of them, but yes, that is the one.

 

[Richard]

These are the little bastards.

 

[FDChappie]

My '74 Scout, no kidding, from the factory came with the tubes installed under plugs and the smog pump plumbed straight into the center of the exhaust manifolds on each side. I don't know what that accomplished except as a check off that the smog controls were installed.

 

[Scout-It-Out]

Do you need them to pass smog? You can just plug them off.