Smog Trees

[hunt4cleanair]

Does an 81 have a smog tree (AIR manifold Tree assembly) on the passenger side or does it just a tube to the catalytic converter?

 

[vettenick]

There's one on both banks.

 

[hunt4cleanair]

So there is a smog tree on each side plus the tube to the converter?

 

[Dave L.]

Yes thats right. The 'smog trees' are part of the exhaust manifolds themselves.

 

[hunt4cleanair]

Interesting...none of my manuals or the AIM show that. So its an integrated system rather than separate assemblies.

 

[Dave L.]

You got it. And the 81 manifolds are specific to 1981 only. Very,very difficult to find if replacements are necessary. I bought an 'extra' pair on ebay for $150 about 2 years ago.

 

[hunt4cleanair]

Clever move...can you shoot me some photos that would illustrate air injection feature. Also I see you have FE7...do you have a rear sway bar. I'm assuming your 81 is original...St louis build or BG?