Junk Collector
Forum Newbie
Posts: 10
Reg: 04-15-12
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04-15-12 07:21 AM - Post#2215290
Yesterday I traded my C3 Project for an El Camino project (ooops) 
Anyway - if the El Camino had catalytic converters are 2 needed on duel exhaust?
Thanks
| Who ever first said: "A Fool and His Money Are Soon Parted" ~ musta been knowin' me |
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DEI8FAN
Member
Posts: 670
Age: 54
Loc: Western, N. Carolina
Reg: 02-01-05
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04-15-12 02:41 PM - Post#2215429
In response to Junk Collector
Yep, If I remember right all 76 and newer US production cars had cats. Don't know where you are or if your county has up the pipe inspections you may.
By the way the Camino section is down the main page near the bottom of the trucks.
1959 El Camino
1970 El Camino
1981 Corvette
2004 Z71
2005 Monte Carlo
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Junk Collector
Forum Newbie
Posts: 10
Reg: 04-15-12
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04-15-12 06:05 PM - Post#2215507
In response to DEI8FAN
thank you
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VintageCarryall
Member
Posts: 1585
Loc: Arizona
Reg: 10-08-06
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04-16-12 07:55 PM - Post#2215963
In response to DEI8FAN
Yep, If I remember right all 76 and newer US production cars had cats. Don't know where you are or if your county has up the pipe inspections you may.
By the way the Camino section is down the main page near the bottom of the trucks.
Close. 1975 was the first year of Catalytic Converters and GM especially went hog wild on them for USA spec passenger cars. Why I said 'USA' was that some Canadian vehicles ca. 1975-76 had a Catalyst delete option; read that Cats weren't mandatory there but it was just easier to build all vehicles for both here and there the same way.
The above stated: quite a few Mopars were Non Catalyst for 1975-76 (up to at least 1981 in Canada) and of course, quite a few import cars/trucks didn't get them till almost 1980.
California, though; they got Cats starting 1975 on virtually everything with the exception of 6001+ GVW trucks, they came later.
1994 Dodge Caravan SWB 3.3L V6
1962 Studebaker Lark 4 door 350 Chevy/TH350
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 Richard Martin
Valued Contributor
Posts: 4411
Loc: Davis Islands, Florida
Reg: 06-12-03
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04-17-12 04:43 AM - Post#2216030
In response to VintageCarryall
http://www.oldcarbrochures.com/static/NA/Chevrolet...
Richard
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wagonman100
Super Senior Member
Posts: 12996
Loc: Baltimore, MD
Reg: 11-27-04
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05-10-12 03:01 PM - Post#2224548
In response to Junk Collector
And you would need two for dual exhaust. But, this can become a sticky situation if you need to get the truck emission tested. El Caminos never came from the factory with dual exhaust, so they may no allow you to run two cats. Depends on your local emissions regulations.
You may be able to bend the rules a bit, though. Malibus were used as police cars and may have come with dual exhaust from the factory and therefore be allowed on the Elky, But you are comparing apples to oranges because the Elky is considered a truck and the Malibu a passenger car. I'm not even sure if the police package included dual exhaust, but I believe I remember seeing some with two tailpipes back in the day. They may have even been split after tha cat. since they also didn't have a double hump crossmember for the pipes to pass under. At least that I know of. I don't know what the purpose of splittle the pipes would be. Not really any performance gain there.
Jay
Some days it's not worth chewing through the restraints.
1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon |
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Junk Collector
Forum Newbie
Posts: 10
Reg: 04-15-12
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05-10-12 06:12 PM - Post#2224605
In response to Junk Collector
Thanks! ... I found out that in NC at this age it needs 3 more years of safety inspection and it's done with inspections.
| Who ever first said: "A Fool and His Money Are Soon Parted" ~ musta been knowin' me |
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Stinky
Senior Member
Posts: 1043
Loc: Whitewater, CO
Reg: 05-25-01
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05-19-12 10:25 AM - Post#2227519
In response to Junk Collector
Several questions...
What kind of motor do you have?
Are smog checks included w/your Safety Inspections?
That said, tis illegal to tamper w/smog "stuff' anywhere in the US.
Personally, what I'd do is get a big, BIG, headpipe/wye and put a 3" exhaust system on it...it has the same area as duals do (7.0 for 3", 7.92 for 2.25 and 6.28 for 2") and get a huge high-flow cat. I'm not sure that you would pick up any gains on a stock motor over a single exhaust...especially if you are running manifolds.
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Junk Collector
Forum Newbie
Posts: 10
Reg: 04-15-12
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05-19-12 11:43 AM - Post#2227534
In response to Stinky
This one has had a different motor put in by someone else - it's a 305 (was a 6 banger according to VIN)
Once it gets old enough it doesn't need a smog test
Mine is a 1980 - so it has to have a safety inspection for 3 more years - then ALL inspections are over with.
This has had the smog stuff disconnected.
The exhaust that came with this is duel pipes and in near brand new condition.
Unfortunately - the El Camino is still in the shop.
The shop is a very busy one.
So far had the transmission rebuilt - it was a bad leaking mess and reverse was acting up on it too.
Had new thicker valve cover gaskets up on.
Had to get bolts put into the motor mounts - had none at all.
About to have the windshield wiper assembly rebuilt - it's missing all kinds of stuff to make it work (needed for safety inspection)
About to have the A.C. fixed - looks like most of the main stuff is on - just no lines connecting any of it. Hopefully I won't need to buy pump and evaporator to make it operational.
About to have the side mirrors replaced - someone put older mirrors on it that are useless! Can barely see out of top 1/2 inch or so of either mirror.
All I can say is I hope the motor will last a year or two 
| Who ever first said: "A Fool and His Money Are Soon Parted" ~ musta been knowin' me |
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VintageCarryall
Member
Posts: 1585
Loc: Arizona
Reg: 10-08-06
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05-29-12 06:15 PM - Post#2231293
In response to Junk Collector
Apparently; 'tampering' with a factory catalyst equipped vehicle is a no-no.........with a few exceptions.
No link handy but allegedly if a vehicle like that Elky was fitted with dual exhausts and was failed on an emissions visual check, simply fit a pair of converters and have it reinspected. Evidently that 'illegal' dual system can be grandfathered in.
Another exception would be fitting a later model year engine that had a factory dual catalyst setup within the same vehicle weight class which overrides the factory emission device setup. i.e. a 1996 up 350 Vortec and of course an LSx package would be OK. In all fairness; I doubt there would be an issue with installing a Tuned Port Injection system from a 1990's Camaro with its cats into that Elky.
Final point: under Federal law the EPA tends to look the other way if a vehicle is more than 25 years old concerning at least emissions controls probably due to inability to even buy certain replacement smog control devices anymore.
1994 Dodge Caravan SWB 3.3L V6
1962 Studebaker Lark 4 door 350 Chevy/TH350
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VintageCarryall
Member
Posts: 1585
Loc: Arizona
Reg: 10-08-06
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05-29-12 06:18 PM - Post#2231294
In response to wagonman100
And you would need two for dual exhaust. But, this can become a sticky situation if you need to get the truck emission tested. El Caminos never came from the factory with dual exhaust, so they may no allow you to run two cats. Depends on your local emissions regulations.
You may be able to bend the rules a bit, though. Malibus were used as police cars and may have come with dual exhaust from the factory and therefore be allowed on the Elky, But you are comparing apples to oranges because the Elky is considered a truck and the Malibu a passenger car. I'm not even sure if the police package included dual exhaust, but I believe I remember seeing some with two tailpipes back in the day. They may have even been split after tha cat. since they also didn't have a double hump crossmember for the pipes to pass under. At least that I know of. I don't know what the purpose of splittle the pipes would be. Not really any performance gain there.
No 1975-ca. 1988 GM passenger car with a catalyst had true dual exhausts, period with the possible exception of a late 1980's Corvette.
1994 Dodge Caravan SWB 3.3L V6
1962 Studebaker Lark 4 door 350 Chevy/TH350
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