Need Carburetor for a second coach

[Paul Array]

Hello Everyone
I need a Quadrajet Carburetor for an engine I am replacing in a coach.

The Carb number I need has to be either a 7043254 out of a 73 or 74 coach.

OR I could possibly use a 7045254 but I would like to have the other as it is a direct year replacement.

Please let me know if you have one that you can sell me.

Thank you
Paul Array
pump...@aol.com

[Larry Weidner]

Hey Paul,
If no one else has a Qjet of the #’s you are needing, Jeff Sirum has rebuilds. Paul Doane from Canada does the rebuilds for Sirum GMCMH. Following rebuild, he puts the rebuilt carb on his 73 455, and using a AFR gauge, rejets them for proper AFR. I have watched him do several and he does good work. Just FYI.

Hope you and Marty are well. Also hope to see yo at the Eclipse rally in Texas next spring. Always good to see you two.

Larry. :-)

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[John Wright]

Paul,

Core charges on a carb for a 455 engine have been running at a little over $395. A remanufactured carb core costs plus $425, a total of $820 plus shipping. From Applied GMC.  The cores are getting very difficult to find.  Fuel injection is not much more.  There are still a lot of 403 carbs available, but they will not work.

John (JR) Wright

GMC Great Laker

GMCGL Tech Editor

GMC Eastern States
GMCMI
TZE Zone Restorations
78 Buskirk Custom 29.5' Stretch
75 Avion (Undergoing Frame-up Restoration)

[bc...@juno.com]

John,

Please update me on 403 carbs available.

thanks,
403 daily driver Bruce Roe
++++++++++++++++++++++++++++++++++++++++++++++++++
From: John Wright <poww...@gmail.com>
To:gmcm...@googlegroups.com 28 Oct 23

[Dolph Santorine]

Someone needs to rename him the “Carb Doctor”

Paul, I have one from a ’76, and I’ll get you the number when I’m home next week (enjoying the last of fall foliage here in the Ohio Valley).

Dolph

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[Paul Array]

Thanks Dolph

Paul

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[Cameron]

hey Paul,

not sure if you found one, but I have a Qjet from a 455 that I no longer need.

Cameron

[Les Leach]

Hi Cameron - if you have a 7043254 Quadrajet available, I might be interested. Please send me a message.

Thanks,

Les

[Paul Array]

Hello Cameron

Thank. You for answering my email although I see that other people are trying to get carbs through my email

What is the number on the carburetor. If you do not know I would be interested anyway.

 

Do you at least know what year it came off of if you do not know the number

Let me know your thoughts on how much you would like for it.

Paul Array

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[Paul Array]

Les

It would be nice if you wrote your own email to ask for a carburetor instead of using my email to complete your wishes.

Paul

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[Cameron]

Paul,

it is from a 73 painted desert.  I am not near the coach at the moment, but will be up there in a couple weeks and can get the number then.  I dont have any need for it and this forum has been extremely helpful in my EFI transition so I would just like to have shipping covered.

Cameron

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[Bob BRAAF]

I have a used Rochester Quadrajet that I would sell, but I don't have a clue where the p/n shows on it.  Came off our engine in a '76 GMC Eleganza II.

Bob Braaf

970-531-Three Two One Six

[Les Leach]

Sorry, was not paying attention.

Virus-free.www.avg.com

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[Paul Array]

Hi Cameron

That is exactly what I need to put on this 73 engine to keep it stock. 

I will be more then happy to pay the shipping plus, just let me know how much it is and I will either PayPal you or send you a check or hand you cash if your going to the next convention in Texas.

Just text me when you have the carburetor and I will send the money. 305 766 7664

Thanks, I appreciate it

Paul Array

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[Cameron]

Will do Paul,  I will be able to get it the weekend of the 11th.

I wish I could go to the convention in TX.  someday I will attend one of those!

Cameron

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[Paul Array]

Hi Bob

The number is on the side of the carburetor stamped into the housing and the number will be probably 7 numbers and then letters..

These carburetors are all different especially if they come from California.

Paul Array

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<mlsde51z.jpeg><PXL_20231030_185400445.MP.jpg>

[Bob BRAAF]

Here is the number on our carburetor removed from the engine on our GMC 455 cu in '76 Eleganza II.

Bob Braaf

---

From: 'Paul Array' via GMCMH EFI <gmcm...@googlegroups.com>
Sent: Wednesday, November 1, 2023 10:24 AM
To: gmcm...@googlegroups.com <gmcm...@googlegroups.com>
Subject: Re: [GMCMH-EFI] Need Carburetor for a second coach

 

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[Larry Weidner]

This is not a GMCMH carb, it is from a Cad 500. But the #s are located in the same vicinity on most Qjet carbs.

Larry. :-)

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[Dick Paterson]

Sorry for poking my nose in  but…..Bob  that is a 75-6  455 gmc carb  “calif” spec  

regards   dick

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[Paul Array]

HI Bob.

That Carb is from a California 76 model. Would you mind telling me what you want for it.?

I can’t use it for the 73 engine I have but can always use it for another project.

Paul.

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<Carburetor Number.jpg>

[Bob BRAAF]

I have no clue what to ask.  Is $100 too much, plus shipping cost?  Where are you located? I'm in Eastern Tennessee. 

Bob 

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From: 'Paul Array' via GMCMH EFI <gmcm...@googlegroups.com>

Sent: Thursday, November 2, 2023 12:54:11 PM

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[weidnerl]

It may not be number correct but it should work just fine on any GNCMH 455. 

Sent from my Verizon, Samsung Galaxy smartphone

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[Paul Array]

I WANT number correct for a reason and that reason is that they are jetted differently so saying it will work does not mean that it will work properly.

I do not have complete sets of metering rods to change the jetting.

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[Paul Array]

Hi Bob, I am in Texas, zip is 78623 just north of San Antonio.

Did we meet at the Lebanon convention?

Paul

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[Dick Paterson]

Paul   the  main  jet  is the only diff--the main jets  calif    #68……………..    fed carb main jets  #70    …all else  is the same

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[Paul Array]

Hi Dick

And what’s the jet in yours or I should say the one I have on my coach ?

It seems to be running a bit lean, plugs are a very light brown, very light.

thanks

Paul

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[James Hupy]

Paul, my advice to you would be to listen to what Dick has to say. No person on this planet knows more about Quadrajet Carbs as used on GMC motorhomes than he does.

Jim Hupy

Salem, Or.

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[Dick Paterson]

   Paul ………….We send our carbs out  “FED SPEC “  all  WITH #70 main………..What  spark plug & gap  are you running

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[Paul Array]

Hi Dick

I have a 355, running your carb and your ignition system, stock cam, spark plug R46SZ, 

Paul

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[Paul Array]

James

Thank you for the advice, I have known Dick for a number of years through the club. He was a racer for years and so was I, the difference is he ran gasoline and I ran Nitro Methane.

Consequently he knows a lot more about gasoline engines.

Paul

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[Paul Array]

Sorry Dick

I have a 455 the 355 was a typo

Paul

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[Paul Array]

Dick, forgive me it must be the age.

Spark plug gap is 50

Paul

[Dick Paterson]

 

Paul   that 46 is too hot a plug   consider the NGK  XR5  IS THE BASIC  V GROOVE PLUG    THE IX  ADDED TO THE END IS THEIR IRIDIUM  HI-$

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[Paul Array]

Thanks Dick

I will change them out and see if it changes the lean problem. After about 65mph or 2800 rpm (307 rear end) this engine gets quite hot, (over 200 water) and (over 220 oil temp).

Paul

On Nov 3, 2023, at 7:34 PM, Dick Paterson <di...@paterson-gmc.com> wrote:

 

Paul   that 46 is too hot a plug   consider the NGK  XR5  IS THE BASIC  V GROOVE PLUG    THE IX  ADDED TO THE END IS THEIR IRIDIUM  HI-$ <image001.png>

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[Cameron]

Hey Paul,

Here’s a picture of the qjet.

Cameron

[Paul Array]

Great Cameron

How about you give me your address so I can send you a check for the carb and then when you receive it you can send it to me.

My private email is paul...@aol.com 

Paul

On Nov 10, 2023, at 5:53 PM, Cameron <cbi...@gmail.com> wrote:

Hey Paul,

Here’s a picture of the qjet.

Cameron

<IMG_0939.jpg>

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[John Wright]

I have looked at my Rochester Quadrajet book number SA113 and my GMC information carb number list  (17054938 indicates that it is a 76 thru 78 403 Quadrajet Carb and was not used on the GMC.

J.R. Wright
GMC Great Laker

GMCGL Tech Editor

GMC Eastern States
GMCMHI
TZE Zone Restorations
78 Buskirk Custom 29.5' Stretch
75 Avion (Undergoing Frame up Restoration)

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[Cameron]

Sorry, I have no idea what the PO did..  I just know I’m not going to use it and I took it off a 73..

Paul, you still want it?

Cameron 

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[Dick Paterson]

JOHN : my rag sheet showed that number  (17054938) as a   1975  455 SERVICE REPLACEMENT  UNIT    (go figger)   regards  dick

 

From: gmcm...@googlegroups.com [mailto:gmcm...@googlegroups.com] On Behalf Of John Wright
Sent: November 11, 2023 1:59 PM
To: gmcm...@googlegroups.com
Subject: Re: [GMCMH-EFI] Need Carburetor for a second coach

 

I have looked at my Rochester Quadrajet book number SA113 and my GMC information carb number list  (17054938 indicates that it is a 76 thru 78 403 Quadrajet Carb and was not used on the GMC.

To view this discussion on the web visit https://groups.google.com/d/msgid/gmcmh-efi/CAO21L81Qi-gnBjjJWyEnwCfQNFo7fZ7XjnmVEr4TwiONWqRMiA%40mail.gmail.com.