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Discussion Starter #1
My first of many questions to come!
What emissions systems would a Canadian model 1970 Nova with a 350 +350TH trans originally come with?

Fuel vapor canister?

Egr?

Efe?

Air pump?

Other?

We don't have tailpipe testing here for 1987 and older, but they do roadside inspections for missing original equipment.
My engine currently has a PCV valve and nothing else.
Thanks
 

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My first of many questions to come!
What emissions systems would a Canadian model 1970 Nova with a 350 +350TH trans originally come with?

Fuel vapor canister?

Egr?

Efe?

Air pump?

Other?

We don't have tailpipe testing here for 1987 and older, but they do roadside inspections for missing original equipment.
My engine currently has a PCV valve and nothing else.
Thanks
An assembly manual will be you best bet to be 100% correct for what was on the 1970 model for emissions. As far as I know, A.I.R. pump, canister with return line, EFE, EGR and TVS (it is for the Transmission, should be on the firewall behind the distributor on the passenger side up high). For the most part they only need to be inplace and appear to be functional too, so you don't necessarily need the exact parts from a 70 Nova.

Hopefully this helps you.
 

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Discussion Starter #3
.

Thanks for replying.
I was afraid it came with all that stuff. :(
I have been trying to figure out what donor vehicle my 350 came out of.
My best guess so far is 1980 ish Camaro. But the cast iron intake is dated 1980 but has no EGR location. I think its an offroad item from GM.
1980 ish Camaro items shouldn't be too hard to find.
 

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Thanks for replying.
I was afraid it came with all that stuff. :(
I have been trying to figure out what donor vehicle my 350 came out of.
My best guess so far is 1980 ish Camaro. But the cast iron intake is dated 1980 but has no EGR location. I think its an offroad item from GM.
1980 ish Camaro items shouldn't be too hard to find.
I know what you mean, I have a numbers matching L78 and the A.I.R. Assembly is $4500 US. Unfortunately the pumps usually got tossed right away. I have a low mileage 350 from a Monte Carlo and it was gone too.

Where abouts are you?
 

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Smog parts

There used to be two smog parts dealers in Hemmings Motor News. Both were located in Ohio. I have sold parts to one of them, an individual named Bill Hodel. Remember him as being very particular about parts, and not buying anything post '75.
Did see a 1975 350 4V Chevy pickup in the Tucson U pull last week, for sale, whole. Amazingly enough, it had all the original smog equipment in place. Was probably a California vehicle for most of it's life.
 

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Discussion Starter #6
I know what you mean, I have a numbers matching L78 and the A.I.R. Assembly is $4500 US. Unfortunately the pumps usually got tossed right away. I have a low mileage 350 from a Monte Carlo and it was gone too.

Where abouts are you?
St. Catharines Ontario

$4500 US is robbery!
A friend at work was pulled over outside Toronto Motorsports Park. A 1/4 mile drag race track in his 1979 RX7.
After inspection they told him he didn't have a Cat. Converter on the car and had x amount of days to get one or they were pulling the car off the road.
I have also heard of them hanging outside of car shows and pulling cars over for inspectons/tickets.
I never realized that this equipment went all the way back to 1970.
 

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St. Catharines Ontario

$4500 US is robbery!
A friend at work was pulled over outside Toronto Motorsports Park. A 1/4 mile drag race track in his 1979 RX7.
After inspection they told him he didn't have a Cat. Converter on the car and had x amount of days to get one or they were pulling the car off the road.
I have also heard of them hanging outside of car shows and pulling cars over for inspectons/tickets.
I never realized that this equipment went all the way back to 1970.
Ya, if they want, they can make our lives difficult with the emissions. With the Etest gone in Ontario, they may start getting tougher on all cars because people will think they can remove the emission equipment. You should be able to find a setup to get you by fairly cheap, the diverter valves are pricey, but many of the parts are available from the aftermarket. The good news is new cats flow so well that they're worth having on any car, or at least run gutted cats.

I don't have any emission equipment on my BB car and it has a 72 396/402 that becomes a whole other issue, because I'd have to prove it was installed prior to 86 I think. If you Google Etest in Ontario there's all the information on what supposed to be on our cars.

I'll look and see if I have an intake with an EGR. I pass by your part of town once a month to see my son who lives in London, so we can always meet up too.
 

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I can't speak for 1969 and beyond, but there are three 1968 Nova L79s in the Canadian L79 Registry with GM Canada documentation showing RPO KD1 - Air Injector Reactor Delete for GM Canada. From this, I would think none of the 1968 Chevy IIs coming to Canada had emissions equipment on them. Anybody have documentation for 1969 and up?

The GM Canada documentation on my 1970 Nova SS L78 makes no mention of emissions equipment. If it had any, I imagine it was quickly removed after delivery, because it was long gone when I bought the car in 1996. I immediately got collector plates that required no emissions testing in B.C., so never had any inspections.

Bob
 

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Discussion Starter #9
.

Thanks for the offer.
I guess I have more to do this winter than I thought to get this car on the road for summer.:(
Maybe I will post my casting numbers in the correct section to figure out what I have under the hood. The date stamp for the block is just a "1" Lol.
 

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I can't speak for 1969 and beyond, but there are three 1968 Nova L79s in the Canadian L79 Registry with GM Canada documentation showing RPO KD1 - Air Injector Reactor Delete for GM Canada. From this, I would think none of the 1968 Chevy IIs coming to Canada had emissions equipment on them. Anybody have documentation for 1969 and up?

The GM Canada documentation on my 1970 Nova SS L78 makes no mention of emissions equipment. If it had any, I imagine it was quickly removed after delivery, because it was long gone when I bought the car in 1996. I immediately got collector plates that required no emissions testing in B.C., so never had any inspections.

Bob
My GM of Canada documents make no mention of being emission equipped. I never thought of it as being optional. My assembly manual shows the L78 came equipped, but I'd certainly bring my documents to court to argue the point.

My 69 small block car had no emission equipment on it.
 

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My GM of Canada documents make no mention of being emission equipped. I never thought of it as being optional. My assembly manual shows the L78 came equipped, but I'd certainly bring my documents to court to argue the point. My 69 small block car had no emission equipment on it.
It's possible both our L78s came into Canada with emission equipment as standard. If it was deleted for Canada it would likely have appeared as RPO KD1 on our documentation like the 1968 L79s. Because there is no RPO KD1 showing, I'm inclined to think they had smog equipment. Nobody in Canada gave two hoots about emissions in 1970, so I'm sure any such equipment on an L78 came off almost immediately. Unfortunately, the GM Canada documentation can't be relied on for consistency in some areas, either. The documentation for my 1970 SS L78 shows power disc brakes and F41 suspension as options when they were standard.

Bob
 

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It's possible both our L78s came into Canada with emission equipment as standard. If it was deleted for Canada it would likely have appeared as RPO KD1 on our documentation like the 1968 L79s. Because there is no RPO KD1 showing, I'm inclined to think they had smog equipment. Nobody in Canada gave two hoots about emissions in 1970, so I'm sure any such equipment on an L78 came off almost immediately. Unfortunately, the GM Canada documentation can't be relied on for consistency in some areas, either. The documentation for my 1970 SS L78 shows power disc brakes and F41 suspension as options when they were standard.

Bob
Yes the paper work certainly isn't the easiest to follow, I wonder if the disc brakes and F42 suspension are noted as options because they were only mandatory on the SS optioned cars. I'd love to prove my car to be a none emission car. Even my 1969 L78 has J52 disc brake and A82 head restraint, but they were mandatory as well.
 

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Smog People

Replied to your inquiry regarding the Ohio smog specialists. Seems both are gone from more recent Hemmings Motor news issues. Likely a niche market and they might? have retired. Maybe a Corvette specialist might have what you need. Interesting always figured only California cars had A.I.R. equipment in the '66 to '70 time period. Assumed Canada fell in with the 49 state regulations or "Federal" requirements.
 

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Interesting always figured only California cars had A.I.R. equipment in the '66 to '70 time period. Assumed Canada fell in with the 49 state regulations or "Federal" requirements.

Not necessarily. As noted in my earlier posts, there are numerous 1968 Willow Run Chevy IIs that came into Canada with documented RPO KD1 - Air Injector Reactor Delete for Canada.

Bob
 

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I can't speak to the 1970 Novas that were imported into Canada, but I can tell you that the only 'regular' 1970 Nova engine sold in the U.S. that used an A.I.R. system was the 154 c.i. 4 cylinder. I haven't been able to find the data on the 396 engines, so it's possible that one or both of those used an A.I.R. system.

As some of you know, my family had a new L48 (350 c.i./300 hp) Nova SS 4-speed in 1970. I remember clearly that it did not have much 'noticeable' emissions plumbing. According to the GM Heritage Center's 1970 Nova Vehicle Information Kit, emissions control was handled by a PCV valve, a Controlled Combustion System (lean fuel mixture + revised distributor calibration) and a Transmission Controlled Spark which retarded engine spark advance in all forward gears except high gear.

As I remember, the only part of the system that was easily seen was the switch that controlled the spark advance feature. I remember it being mounted on the passenger's side of the intake manifold.

Edit: I went back to the GM V.I.K. for 396/454 Chevelles. Those engines also did NOT use A.I.R. systems.
 
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