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1981 smog

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Old Jun 8, 2018 | 10:40 PM
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Default 1981 smog

I have a 1981 Corvette that is missing it’s smog equipment.
Searching everywhere..
I would greatly appreciate any direction for finding all of the smog kit or any parts.
It has to be 1981 specific.
update... finding piece by piece...
Now looking specifically for the egr control valve solenoid and bracket. Manual trans.

ive learned in my search that the automatic trans solenoid is different and won’t work.
so it’s the 1997518 manual trans.
not the 1997536 auto.
(I thought this was supposed to be fun.)
Thanks so much for your attention.

Last edited by Marks 81; Jun 13, 2018 at 12:55 AM.
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Old Jun 9, 2018 | 08:34 AM
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FWIW: if you want to put together a parts list, the 81 AIM shows what you will need, how everything assembles, and lists the original GM part numbers. It's possible much of the system was GM generic and used on other makes and models.

Last edited by Easy Mike; Jun 10, 2018 at 09:17 AM.
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Old Jun 9, 2018 | 02:51 PM
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Ouch, depending on how far you are off to pass the visual it may be time to look at a conversion to another year/model.
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Old Jun 9, 2018 | 03:07 PM
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PM sent.

DUB
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Old Jun 10, 2018 | 01:26 AM
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Default Aim?

Originally Posted by Easy Mike
IW: if you want to put together a parts list, the 81 AIM shows what you will need, how everything assembles, and lists the original GM part numbers. It's possible much of the system was GM generic and used on other makes and models.
Thank you for reaching out. I hate to sound new or uninformed but what is the ‘aim’? And where can I find it? Thanks again for your help.
Mark
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Old Jun 10, 2018 | 09:20 AM
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Originally Posted by Marks 81
...what is the ‘aim’? And where can I find it?...
Assembly Instruction Manual. AIMs show how the cars were to be assembled at St. Louis. Most of the aftermarket providers carry AIMs.
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Old Jun 10, 2018 | 10:00 AM
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I have some 1980 smog stuff, if you or anyone else is interested send a PM

Last edited by redvetracr; Jun 10, 2018 at 10:00 AM.
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Old Jun 10, 2018 | 11:41 AM
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Hopefully DUB or someone else has contacted you regarding a “kit.”

Your best bet is to find someone that is removing the whole setup which happens often enough for folks that don’t live in CA or other states that require essentially original equipment.

I like the suggestion above to start with an AIM. You need to figure out what is missing. Essentially, the whole 81 smog system works in concert. There is a computer (located in the compartment behind the drivers seat), a special distributor, a specific carburetor, a smog pump and diverter valve and a set of shorty headers with air injection tubes. The diverter valve also has a tube that runs to the catalytic converter. In addition, there is an oxygen sensor in the drivers side exhaust pipe and a MAP sensor on the firewall.

Hopefully most of these items and the accompanying harnesses are still in place.

Last edited by CA-Legal-Vette; Jun 10, 2018 at 01:40 PM.
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Old Jun 10, 2018 | 01:24 PM
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Originally Posted by Easy Mike
Assembly Instruction Manual. AIMs show how the cars were to be assembled at St. Louis. Most of the aftermarket providers carry AIMs.
I’m ordering it now.. thanks again!
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Old Jun 10, 2018 | 01:25 PM
  #10  
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Originally Posted by CA-Legal-Vette
Hopefully DUB or someone else has contacted you regarding a “kit.”

Your best bet is to find someone that is removing the whole setup which happens often enough for folks that don’t live in CA or other states that require essentially original equipment.

I like the suggestion above to start with an AIM. You need to figure out what is missing. Essentially, the whole 81 dog system works in concert. There is a computer (located in the compartment behind the drivers seat), a special distributor, a specific carburetor, a smog pump and diverted valve and a set of shorty headers with air injection tubes. The diverted valve also has a tube that runs to the catalytic converter. In addition, there is an oxygen sensor in the drivers side exhaust pipe and a MAP sensor on the firewall.

Hopefully most of these items and the accompanying harnesses are still in place.
A lot of great information. Thanks so much.
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