Author Topic: 1990 DELCO 9C-Application Index Sheets  (Read 648 times)

Offline SUPRCHY

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1990 DELCO 9C-Application Index Sheets
« on: December 07, 2025, 06:43:49 AM »
Looking for a copy of 1990 Vehicle Application Index pages from Delco carburetor #9 P&S manuals. Hopefully the snapshot of a 1989 sample was attached.

Thanks,

Offline SUPRCHY

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #1 on: December 09, 2025, 12:20:43 PM »
I'm just trying to verify the last vehicle installed Quadrajet. According to the "internet" the last  passenger car Qjet was #17088152 and it was installed on Oldsmobile 403 VIN Y engines. They were claimed to be Cadillac Brougham, Buick/Olds/Chevy Estate Wagons. I have a copy of the 9C-Bulletins from the Big Book, but it ends in 1989. Just thought maybe there was a 1990 copy floating around that would verify if the above is correct.

Thanks for any info,

SUPRCHY

Offline Cadman-iac

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #2 on: December 10, 2025, 07:28:19 AM »
  The Cadillac Brougham used the Oldsmobile 307Y engine from I believe 1985 through 1989 for sure, and possibly into 1990. The Quadrajet used was the Electonic version. I had an '89 years ago and I think the carb number was something like 17086005, not positive now.
 But for sure the 1991-92 Broughams used a 350 Chevrolet engine with fuel injection, they no longer had a carburetor.

 Hope this helps.  Rick

Offline SUPRCHY

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #3 on: December 11, 2025, 09:23:38 AM »
You are absolutely correct about the Y engine being a 307 5.0L. I was posting this from memory and it's not as good as it once was. The 1989 partial snapshot I posted shows 2 Cadillac Brougham carbs, 17086009 & 17088115. I'm just trying to pin down the 1990 offerings for my own curiosity and I appreciate any help!

Thanks,

SUPRCHY

Offline Cadman-iac

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #4 on: December 11, 2025, 09:50:22 AM »
  No problem.  I was just going to check my interchange manual, but it only goes up to 1986, so wouldn't be much help either.
 Good luck with your search.

 Rick

Offline Cadman-iac

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #5 on: December 11, 2025, 09:55:02 AM »
  Maybe this will help.  I've got a Delco book from 95 that lists the carb numbers and kits .
 Here's a few pictures from it.

Offline novadude

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #6 on: December 11, 2025, 12:51:37 PM »
I was a lot attendant at a Chevy dealer in the early 90s (summer job when I was like 19 yrs old).  I know that the 1990 Caprice station wagons had CCC Q-jets on a 307 ci olds engine.  I believe the 1990 307 olds engine in the full-size wagons was likely the last passenger car to use a Q-jet.

Offline SUPRCHY

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #7 on: December 11, 2025, 01:10:37 PM »
Cadman-iac,

Great info! The catalogs you have show a Qjet carb used on the Cadillacs through 1990, but it's not 17088152 it's 17088115 which I have documented through 1989(as far as my book goes).

Novadude,

That confirms the Chevy Wagons and by association probably the other wagons as well.

Thanks to all.

SUPRCHY

Offline Cadman-iac

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #8 on: December 11, 2025, 01:20:45 PM »
 Glad I could help someone out here!
 
 As far as the Oldsmobile 307 goes, I think that 1990 was the last year it was used.
 Cadillac used the 350 Chevrolet for the Brougham from '91 through '96, and of course it was in the Escalade as well, until the LS engine came out.

 1990 was the last gasp for the Quadrajet in any form from GM, unless it was used in export production models, but I don't have any information on that.
 It would have been nice to know back then, I'd have bought a few for spares.

 Rick

Offline SUPRCHY

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #9 on: December 16, 2025, 09:08:37 AM »
I still would love to see a copy of the DELCO 1990 Vehicle Application Index pages if someone has them. Just to put this to bed once and for all.

Thanks,

SUPRYCHY

Offline Cadman-iac

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #10 on: December 17, 2025, 09:49:23 PM »
  I'm not sure where you can find that page you're looking for, but I did a search online and got this:

The Rochester Quadrajet carburetor with part number 17088152 is an electronic feedback (E4ME) unit. It was a factory-installed carburetor on various General Motors vehicles with 5.0L (305 cubic inch) V8 engines in the mid-to-late 1980s. 

Specific models it fits include:

Buick: Regal (1986)Chevrolet:Camaro (1986-1987)Caprice (1986-1988)El Camino (1986-1987)Monte Carlo (1986-1988)GMC: Caballero (1986-1987)Pontiac:Bonneville (1986)Firebird (1986)Grand Prix (1986)Parisienne (1986) 

The number 17088152 is recognized as the last automotive Quadrajet number produced. This carburetor was designed for computer-controlled applications and required a 12-volt power source for its electric choke element. 

  Is this what you want?

  Rick

Offline SUPRCHY

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #11 on: December 19, 2025, 07:17:02 AM »
Cadman-iac,

Thanks for your reply! To explain what I'm trying to do, sometime around May of this year my son and I started a project to identify all Qjets produced since 1965. At present we have identified in the neighborhood of 1270 different Qjet numbers with over 1900 different applications including some from Australia. In order to do this I purchased several Delco Rochester "9" Parts and Service manuals(aka the Big Book). They covered the range from before the Qjet in 1965 to 1989. These are directly from the manufacturer and as close as one can come to direct confirmation of the numbers/applications as I can do.
So I was looking for that elusive 1990 last application index sheet(it may not even exist) to finish my database.
I appreciate your insights into the usage of the 17088152 carb as It helps clarify my understanding of  it's application and it helped clarify that it was the highest numbered automotive Qjet used(not the last number used as I originally believed), that appears to be 17088115 or the highest numbered Qjet used 17089112 Mercruiser Marine.

Hope this helps.

P.S. I'm partial to Cadillac carbs. I'm running a modified 17057230 on my 1972 Super Cheyenne.

SUPRCHY

Offline novadude

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #12 on: December 19, 2025, 08:19:24 AM »
I wonder if they continued to produce marine carburetors after 1990? 

Offline Kenth

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #13 on: December 19, 2025, 08:25:49 AM »
If you bought a new replacement Delco/Rochester Quadrajet for 1990-88 Buick, Cadillac, Chevrolet Oldsmobile or Pontiac you would have a 24-5092.
24-5092 is stamped 17111994 and it replaced 17088115.

Info from 1997 ACDelco Carburetion Catalog.

HTH


Offline SUPRCHY

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Re: 1990 DELCO 9C-Application Index Sheets
« Reply #14 on: December 19, 2025, 08:46:39 AM »
Kenth,

Thanks for the info, I don't have any catalogs or manuals past 1989.

novadude,

My best guess is Yes, if you mean for sale as a replacement carb. I see Marine carbs on ebay all the time with model numbers in the early 80's and Julian dated late 80's. But as I said I don't have any proof.

SUPRCHY