Re: 1967 Camaro Cowl Plenum Breather
 

The low mile green L78 68 Camaro that sold at Barrett-Jackson a few years ago had smog delete noted on the GM of Canada paperwork. I have a pic of it here somewhere.

Re: 1967 Camaro Cowl Plenum Breather
 

Hard to read but here it is. https://www.yenko.net/attachments/254588-P1180018.JPG

Re: 1967 Camaro Cowl Plenum Breather
 

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Mark, I picked up on an article over on CRG a year or so ago including some GM paperwork indicating that '68 cars built for Canada did not have A.I.R. and indicating the proper pipe plugs for the exhaust manifolds. Just prior to discovering that article, I had asked Jerry McNeish about it and he said that he had heard that Canadian '68s didn't have A.I.R., but had never been able to verify it. Who knows? Anyway, my '68 has what is almost certainly a '67 cowl plenum breather and I am going to leave it that way during restoration.

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Hello It is my understanding that Canadian 1968 Camaro Z/28 option models all had smog equipment. I was shown a picture from that period of a complete 1968 302 motor on a skid and the smog equipment was present there to.
One guy ordered a 1968 Camaro Z/28 with the factory GM headers. When the car arrived at the dealer the car had the smog equipment installed and the headers were stashed in the trunk. There was no fittings on the headers for smog equipment. GM considered the headers 'off road use only'parts. This is not 1967 related but the question did come up...

Re: 1967 Camaro Cowl Plenum Breather
 

That might be but I wonder if you could just order the smog delete option to the Z28 order and have it deleted ? I wish I had taken a better pic.

Re: 1967 Camaro Cowl Plenum Breather
 

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Hard to read but here it is. https://www.yenko.net/attachments/254588-P1180018.JPG

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Charley, is that really option code KIX? LESS AIR INJECTION REACTOR FOR GM OF CANADA

Or is it code KD something?? Can you tell from your picture?
Thanks,
-Sam

Re: 1967 Camaro Cowl Plenum Breather
 

Maybe KD4 ? KD5 is the next option I think and it is engine block heater ?

Re: 1967 Camaro Cowl Plenum Breather
 

Here is the build sheet

Re: 1967 Camaro Cowl Plenum Breather
 

It must be remembered that the purpose of the various option codes was to schedule the correct options to match the build order for the car. The level of smog equipment on a vehicle was a GM decision not a dealer decision. There was no box you could check to 'delete smog equip'. Rather it was part of how GM built a car for Canada or the US. IN the 1960's and 1970's the build standards were more liberal in Canada than in the US. For example the Ferrari Boxer was sold and registered for road use in Canada but US dealers could not sell that model from the Ferrari factory. If a big block 1968 car got the smog delete option then it was becauce it was not required. The smog issue was dictated by the government and the General was just following orders. The only part the dealer played was in often removing the smog equipment once the car was sold.

Re: 1967 Camaro Cowl Plenum Breather
 

It is KD8, less air injection reactor for GM of canada

Re: 1967 Camaro Cowl Plenum Breather
 

Thanks for the info on KD8. I gather this was instructions for a big block model. Were the exhaust manifolds plugged or did KD8 dictate a different exhaust manifold?