Smog Pumps

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Apr 29, 2017 | 02:38 PM

576667G

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Smog Pumps

Did all C-3's come with smog pumps or only certain years? When did they start and stop? Can't get correct answer! Thanks
576667G

Apr 29, 2017 | 02:48 PM

Alan 71

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From: Westminster Maryland

Hi 5,
No.
The use of the AIR system typically depended on the model year, the engine installed, and where the car was to be delivered.
The chart of which years/engines had AIR pumps is long… you might be better asking about what years/engines in particular you're interested in.
Regards,
Alan

Apr 29, 2017 | 11:50 PM

bearphoto

Safety Car

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From: Lake Havasu City Arizona

SoCal Events Coordinator

St. Jude Donor '12

Well if I can jump in, how about a 1981 L-81 350. I have this car being delivered to me next week from Texas. Most of the chevy smog pumps of this era seem to be right in front between the fan blade and the thermostat housing. I don't see one in that location in the pics of the car being delivered.

Apr 30, 2017 | 07:10 AM

Alan 71

Team Owner

Joined: Sep 2006

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From: Westminster Maryland

Hi Bp,
1981 engines originally had an A.I.R. pump as part of their emissions equipment.
Regards,
Alan

Apr 30, 2017 | 07:14 AM

crawfish333

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From: Opelousas, Lousiana

CI 6-7 & 9 Veteran

I believe smog pumps were required on all 1981 cars, along with Cats. Some people removed that stuff to increase performance though.

Apr 30, 2017 | 10:42 AM

Easy Mike

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From: Southbound

Cruise-In II Veteran

FWIW: California cars began getting smog pumps in the mid-60s.

Apr 30, 2017 | 11:43 AM

Alan 71

Team Owner

Joined: Sep 2006

Posts: 31,134

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From: Westminster Maryland

Hi,
I first see mention of the A.I.R system listed among the options for 1966 cars.
It was K-19 and required (?) for cars being delivered in California.
Regards,
Alan

Apr 30, 2017 | 09:00 PM

70L46Conv4Sp

Instructor

Joined: Aug 2002

Posts: 195

Likes: 21

From: Upstate SC

I know the 1970 L46 did not have the AIR pump. I'll look in a few of my reference books and see if any of them tell which others don't have the pump.

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Apr 30, 2017 | 10:23 PM

ed427vette

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Joined: Jul 2006

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From: Massapequa Park NY

I can add this, in 1969 all Corvettes had the smog pumps, every one, even the L88.

May 1, 2017 | 10:31 PM

#10

MISTERZ06

Racer

Joined: Oct 2016

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From: Staten Island New York

Quote:

Originally Posted by ed427vette

I can add this, in 1969 all Corvettes had the smog pumps, every one, even the L88.

1969 Chevy Corvette l-88

1960's L-79

........................................ ....tom

Attached Images

Last edited by MISTERZ06; May 1, 2017 at 10:35 PM. Reason: gramar

May 1, 2017 | 11:16 PM

#11

LS4 PILOT

Melting Slicks

Joined: Jul 2009

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My 74 454 has original smog system ....I'm not telling if it works

I think all factory C3 BB have A.I.R. System .

I have seen some years SB that did not ....seems these were L48 s

May 2, 2017 | 07:51 AM

#12

Don Rickles

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Joined: Jun 2005

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2018 Corvette of Year Finalist

2017 C3 of Year

Quote:

Originally Posted by LS4 PILOT

My 74 454 has original smog system ....I'm not telling if it works

I think all factory C3 BB have A.I.R. System .

I have seen some years SB that did not ....seems these were L48 s

Nope, A.I.R. system were installed on "High Performance" engines. I can say for sure in '71 the 454 cu. in. 365 hp motor was NOT equipped with the early emission control device.

May 2, 2017 | 07:51 AM

#13

RonR80

Melting Slicks

Joined: Apr 2008

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From: Russell Ontario

St. Jude Donor '09

My 1980 had the AIR pump original from GM ,

May 2, 2017 | 01:26 PM

#14

Snoopysvet

Le Mans Master

Joined: Oct 2006

Posts: 8,939

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From: El Cajon California

My 1978 L-48 federal emissions car had no smog pump

May 2, 2017 | 04:54 PM

#15

576667G

Thread Starter

Instructor

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Thanks guys!.....appreciate the input!

May 2, 2017 | 05:50 PM

#16

NewbVetteGuy

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Joined: Jun 2016

Posts: 2,979

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From: Woodinville WA

If anyone wants / needs an air pump for their C3, I've got a VERY complete one in very good condition (13.9k miles on the car). I've got the air pump, pulley, bracket, stock manifolds with the recirc fittings (whatever they're called, can't remember), etc.. just sitting in my garage. (Off of my 79.)

I'd love to find it a new home. ;-)

Adam

Last edited by NewbVetteGuy; May 2, 2017 at 05:51 PM.

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