Engine What is a de-smogged 304 entail?

[1979GabeCJ5]

So, I have an AMC 304 (1979) so when I got it, it was partially plugged up, de-smogged, etc….

It has 3/8 MIP plugs on 3 places (2 removed currently) on the intake manifold. All 3 of the plugs had vacuum hose nipples (one had 3) on them that were rubber-cap plugged. Then there’s a weird cylindrical apparatus that says “AH”

What should be plugged? Is there a way to find the parts from the original vacuum/distributor “harness” that I’ve heard of? Should I just leave it plugged? I don’t think it’s a California vehicle.

Any guidance would be appreciated.

 

[Manic Mechanic]

That looks like EGR and other EVAP component locations. I have a 79 AMC 304 at home I'll try to remember to get some pictures of the motor when I get home.

If it's running and you don't need it to pass emissions where you live then I wouldn't worry to much about it

 

[1979GabeCJ5]

That looks like EGR and other EVAP component locations. I have a 79 304 at home I'll try to remember to get some pictures of the motor when I get home.

If it's running and you don't need it to pass emissions where you live then I wouldn't worry to much about it

So one of them is some kinda coolant sensor after some googling. Should that stay plugged?

 

[Manic Mechanic]

Sorry for the bad pics

 

[1979GabeCJ5]

So I guess we’re twins in this regard. I just got some fancy 3/8th plugs for the other ports

 

[Manic Mechanic]

I'm going to plug off everything that I don't need