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06-24-2014, 11:00 PM
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#1 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
If anyone has one I would like to know where the hose from the diverter valve hooks to the carb for vacuum signal? A picture would be great. Thanks, Rod.
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06-26-2014, 01:25 PM
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#2 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
anyone with a 67 factory smog truck or 66-67 smog car 283 engine? here is a pic of a carb without smog. just need a pic of one like this with smog. even a 2 barrel just so I have an idea of where to hook it up.
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07-02-2014, 04:53 PM
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#3 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
nobody?
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07-02-2014, 05:01 PM
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#4 |
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Registered User
Join Date: Apr 2010
Location: Everett, WA
Posts: 504
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Hmmm talk to member cortcomp (if that's how you spell it) over in the 60-66 section. He's doing a full blown restoration on his 66 factory 327 an powerglide truck which was a Cali truck with smog an he might be able to help.
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07-02-2014, 05:15 PM
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#5 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
I have already but thanks for the help. He wasn't able to help me.
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07-02-2014, 05:58 PM
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#6 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
here is a picture of the valve and hose. I have no port on the carb for it and it wouldn't reach if I had one. Carb may not be a California carb though. I suspect this goes to the back of the carb but unsure.
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10-22-2014, 10:33 AM
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#7 |
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Registered User
Join Date: Jan 2010
Location: Here
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Ttt
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04-26-2015, 12:06 PM
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#8 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Anyone
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04-26-2015, 01:41 PM
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#9 |
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Registered User
Join Date: Jun 2000
Location: Bismarck, ND
Posts: 4,281
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
I have a Rochester 4b AIR diverter valve smog hook up on my 68 if that helps. Are they similar?
__________________
Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club. |
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04-26-2015, 01:44 PM
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#10 |
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Registered User
Join Date: Jun 2000
Location: Bismarck, ND
Posts: 4,281
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
I was troubleshooting my AIR system a few weeks ago and found this site helpful.
http://www.camaros.org/emissions.shtml
__________________
Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club. |
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04-26-2015, 03:16 PM
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#11 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
I have a Rochester 4gc carb so I am not sure where on that carb the hose hooks up. 68 and on has a Quadra jet . Similar but different.
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04-26-2015, 08:46 PM
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#12 |
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Registered User
Join Date: Jun 2000
Location: Bismarck, ND
Posts: 4,281
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
My diverter valve connects under the choke vacuum thingy. You are right, I have a Q-jet.
__________________
Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club. |
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10-13-2015, 07:40 PM
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#13 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Put this back out there
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10-13-2015, 08:55 PM
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#14 |
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Moderator
 Join Date: Dec 2012
Location: ON, Canada
Posts: 2,156
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Would my 65 Impala 327 4GC have what you need?
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10-13-2015, 09:24 PM
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#15 |
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Registered User
 Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Stock is good, but I would rip that smog stuff outta there.
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10-13-2015, 10:27 PM
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#16 | |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Quote:
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10-15-2015, 05:31 PM
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#17 |
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Registered User
Join Date: Jul 2015
Location: Lindenwold, NJ
Posts: 94
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
As far as camaros were concerned http://www.camaros.org/emissions.shtml 66-67 didn't use a diverter valve, they were not used until 68.
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10-15-2015, 05:42 PM
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#18 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
You are correct it is a mixture control valve. It still needs vacuum signal though.
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10-15-2015, 10:58 PM
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#19 |
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Registered User
Join Date: Nov 2009
Location: Nebraska
Posts: 1,034
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Got a '66 327 with a 4G.... but no smog pump.
__________________
WANTED: * 60-66 Chevy and GMC FACTORY PHOTOGRAPHY (scans) of pickups and carryalls. Custom Camper Club-- Own a 65-66 Custom Camper? Join us at: http://67-72chevytrucks.com/vboard/g...hp?groupid=117 |
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10-16-2015, 11:03 PM
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#20 |
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Who Changed This?
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,269
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
You might try finding someone with a repair manual for your year truck, if you want it all original to include the smog equipment. Most people just gut the system, as in those days it was California only. The other 49 states did not use this (except sometimes New Jersey and Colorado). It was used to supply air to the exhaust during warm-up to further combust the rich mixture until the choke opened. There was a thermostatic switch by the thermostat, and in some cases, actually mounted to the thermostat housing. If that thermostatic switch is gone, that AIR system doesn't work, anyway. Anyway, the vacuum line would go to the thermostatic switch, which was connected to full manifold vacuum.
Let me see a pic of the front of the engine, especially the thermostat housing and the front of the intake manifold. I'll see what I can dredge out of the 30 year old memories. I was a smog mechanic in those days, but it's been a long time.
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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10-17-2015, 10:46 PM
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#21 |
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Registered User
Join Date: Jan 2010
Location: Here
Posts: 5,437
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Here are the pic's. This is not the original carb to the A.I.R. system. That's why I don't know where the signal comes from. I de-veined the pump so the system won't function ( it now has the correct carb and distributer for non smog 327) but the reason I want to know the location is so it looks correct and functionable
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10-18-2015, 05:27 PM
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#22 |
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Registered User
Join Date: Jan 2012
Location: Washington,Il
Posts: 632
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Wow I feel fortunate,I didn't know they had emission stuff back then !
__________________
It builds on my intelligence when I make a mistake, Boy am I building on it! '67 C-10,'70 Nova SS 
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10-18-2015, 07:36 PM
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#23 | |
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Scrapper 1
Join Date: Jan 2007
Location: Riverside Calif
Posts: 1,649
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Re: anyone have a 4G/4GC 283/327 rochester carb with A.I.R. 66-67
Quote:
1966 was the first year of smog and seat belts and smog pump and air tubes |
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