Carburetor

davidlive

davidlive

Member
Nov 19, 2011
216
27
18
Simi Valley, California
I'm in the process of rebuilding the carburetor, I ordered a rebuild kit from summit racing and they sent me Hygrade Carburetor repair kit 1580 Kit
V17024, but i believe it's not the correct one, so i called them back to verify and a different sales rep told me they didn't even have my carburetor
number in their system Rochester quadrajet 17053309, (403 Engine Federal Standard Non-ca)

is this the correct carburetor ?
or did the previous owner change it ?

I do have a Carburetor on a 1974 455 engine, but unable to locate it's number yet to see if it can be used instead.

http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_20170218_171230_zpszjaaetqw.jpg.html

--
78 Royal #749
74 #136
Oversteer is when you hit the wall with the rear of the car, understeer is when you hit the wall with the front of the car. Hp is how fast you hit the
wall, and torque is how far you take the wall with you when you hit it.
 
If i'm decoding that number correctly, the carburetor the previous owner installed 17053309 is off a 1973 chevy 1 barrel

170 : Prefix Code
5 : Decade Produced
5 - 1976-1979 (1705)
8 - 1980's (1708)
3 : Year Produced
3 : Model
0 - Monojet (1 bbl) Federal standards
1 - Two jet (2 bbl) Federal standards
2 - Quadrajet (4 bbl) Federal standards
3 - Monojet (1 bbl) California standards
4 - Two jet (2 bbl) California standards
5 - Quadrajet (4 bbl) California standards
6 - VariJet (2 bbl) Fed
0 : Division.
0, 1, and 2 all indicate Chevrolet.
4 - Buick
5 - Olds
6,7 - Pontiac
8 - Chev / Olds / GMC / Truck Non comp
9 : Transmission
Even numbers - Automatic Transmission
Odd numbers - Manual Transmission
--
78 Royal #749
74 #136
Oversteer is when you hit the wall with the rear of the car, understeer is when you hit the wall with the front of the car. Hp is how fast you hit the
wall, and torque is how far you take the wall with you when you hit it.
 
David,

Here you go:

http://bdub.net/gmcmotorhome.info/engine.html

BTW you can save yourself a lot of aggravation and frustration by book
marking Gene's website and checking it before you order stuff for your GMC.

There are very few parts people around anymore that even know what a GMC
motorhome looks like let alone what parts it uses!

Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of David
Morrison
Sent: Sunday, March 12, 2017 11:07 AM
To: gmclist
Subject: Re: [GMCnet] Carburetor

If i'm decoding that number correctly, the carburetor the previous owner
installed 17053309 is off a 1973 chevy 1 barrel

170 : Prefix Code
5 : Decade Produced
5 - 1976-1979 (1705)
8 - 1980's (1708)
3 : Year Produced
3 : Model
0 - Monojet (1 bbl) Federal standards
1 - Two jet (2 bbl) Federal standards
2 - Quadrajet (4 bbl) Federal standards
3 - Monojet (1 bbl) California standards
4 - Two jet (2 bbl) California standards
5 - Quadrajet (4 bbl) California standards
6 - VariJet (2 bbl) Fed
0 : Division.
0, 1, and 2 all indicate Chevrolet.
4 - Buick
5 - Olds
6,7 - Pontiac
8 - Chev / Olds / GMC / Truck Non comp
9 : Transmission
Even numbers - Automatic Transmission
Odd numbers - Manual Transmission
--
78 Royal #749
74 #136
Oversteer is when you hit the wall with the rear of the car, understeer is
when you hit the wall with the front of the car. Hp is how fast you hit the
wall, and torque is how far you take the wall with you when you hit it.

_______________________________________________
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Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
> I'm in the process of rebuilding the carburetor, I ordered a rebuild kit from summit racing and they sent me Hygrade Carburetor repair kit 1580
> Kit V17024, but i believe it's not the correct one, so i called them back to verify and a different sales rep told me they didn't even have my
> carburetor number in their system Rochester quadrajet 17053309, (403 Engine Federal Standard Non-ca)
>
> is this the correct carburetor ?
> or did the previous owner change it ?
>
> I do have a Carburetor on a 1974 455 engine, but unable to locate it's number yet to see if it can be used instead.
>
> http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_20170218_171230_zpszjaaetqw.jpg.html
Correct carb for a 1978 with a 403 in California would have been 17058559. Everywhere else was 17058254. Correct carb for the 455 in 1974 would have
been 7043254.
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"When I grow up I am going to be a curmudgeon."
 
both of mine are stamped in a circle on the rear of the carburetor

the 1978 royal 403 engine 17053309, doesn't match any of the numbers on gene's site for 78
http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_20170218_170818_zpsnoksofug.jpg.html

the 1974 painted desert 455 engine, this one is hard to read i think it's 7037895 and doesn't match any of the numbers on gene's site for 73/74
http://s3.photobucket.com/user/DavidLive/media/1974%20GMC%20Motorhome/IMG_20170311_162100_zpsiqkozijn.jpg.html

so neither one is the correct carburetor for my 403 engine ...

Thanks David
--
78 Royal #749
74 #136
Oversteer is when you hit the wall with the rear of the car, understeer is when you hit the wall with the front of the car. Hp is how fast you hit the
wall, and torque is how far you take the wall with you when you hit it.
 
The carb number should be stamped not cast. I believe it runs vertical.

> I'm in the process of rebuilding the carburetor, I ordered a rebuild kit from summit racing and they sent me Hygrade Carburetor repair kit 1580
> Kit V17024, but i believe it's not the correct one, so i called them back to verify and a different sales rep told me they didn't even have my
> carburetor number in their system Rochester quadrajet 17053309, (403 Engine Federal Standard Non-ca)
>
> is this the correct carburetor ?
> or did the previous owner change it ?
>
> I do have a Carburetor on a 1974 455 engine, but unable to locate it's number yet to see if it can be used instead.
>
> http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_20170218_171230_zpszjaaetqw.jpg.html

--
C. Boyd
76 Crestmont
East Tennessee
 
In this pic of throttle lever side (driver)
http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_20170218_170747_zpswrlini0k.jpg.html
There is a dirty vertical flat under the round thingie. Clean it off and look for number.

> I'm in the process of rebuilding the carburetor, I ordered a rebuild kit from summit racing and they sent me Hygrade Carburetor repair kit 1580
> Kit V17024, but i believe it's not the correct one, so i called them back to verify and a different sales rep told me they didn't even have my
> carburetor number in their system Rochester quadrajet 17053309, (403 Engine Federal Standard Non-ca)
>
> is this the correct carburetor ?
> or did the previous owner change it ?
>
> I do have a Carburetor on a 1974 455 engine, but unable to locate it's number yet to see if it can be used instead.
>
> http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_20170218_171230_zpszjaaetqw.jpg.html

[/quote]
--
C. Boyd
76 Crestmont
East Tennessee
 
I finally found it, wow, THANK YOU C BOYD it was covered in dirt .... wow one of those moments ... Thank everyone here for putting up with me, and
guiding me to patience and finding the correct stuff

the 1978 royal has the correct carburetor in it 17058254
http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_20170311_173453_zpsizmd75lw.jpg.html

the 1974 painted desert, has 7029241 which doesn't match gene's site
http://s3.photobucket.com/user/DavidLive/media/1974%20GMC%20Motorhome/IMG_20170311_173620_zpstynegk4n.jpg.html

Thanks David

--
78 Royal #749
74 #136
Oversteer is when you hit the wall with the rear of the car, understeer is when you hit the wall with the front of the car. Hp is how fast you hit the
wall, and torque is how far you take the wall with you when you hit it.
 
Does the 74 carb gas inlet come in the front as all Olds carbs or from the side as other brand Q-jets? 7029 is a 1969 # but 241 doesn't seem to be
Olds.
http://442.com/oldsfaq/ofcrb.htm

> I finally found it, wow, THANK YOU C BOYD it was covered in dirt .... wow one of those moments ... Thank everyone here for putting up with me, and
> guiding me with patience to finding it correctly.
>
> the 1978 royal has the correct carburetor in it 17058254
> http://s3.photobucket.com/user/DavidLive/media/1978%20GMC%20motorhome/IMG_20170311_173453_zpsizmd75lw.jpg.html
>
> the 1974 painted desert, has 7029241 which doesn't match gene's site
> http://s3.photobucket.com/user/DavidLive/media/1974%20GMC%20Motorhome/IMG_20170311_173620_zpstynegk4n.jpg.html
>
>
> Thanks David

--
C. Boyd
76 Crestmont
East Tennessee
 
yeah, the fuel comes from the front, the previous owner of that engine, well he tinkered, he did convert it to hei ignition from points, he had the
engine rebuilt, he had those roller rocker arms on it, and did other things as well.

according to guide online it's from a 1969 4 barrel Q-jet Federal standard Buick with a Manual transmission ...
http://www.route66hotrodhigh.com/DecodeQjet.html

Thanks David
--
78 Royal #749
74 #136
Oversteer is when you hit the wall with the rear of the car, understeer is when you hit the wall with the front of the car. Hp is how fast you hit the
wall, and torque is how far you take the wall with you when you hit it.
 
That Buick mt carb is rare. Bout as rare as an Olds mt carb. Hang on to it or use it. Olds cranks are not drilled for a pilot bearing for a
straight shift trans unless it came with an oem straight shift.

> yeah, the fuel comes from the front, the previous owner of that engine, well he tinkered, he did convert it to hei ignition from points, he had
> the engine rebuilt, he had those roller rocker arms on it, and did other things as well.
>
> according to guide online it's from a 1969 4 barrel Q-jet Federal standard Buick with a Manual transmission ...
> http://www.route66hotrodhigh.com/DecodeQjet.html
>
> Thanks David

--
C. Boyd
76 Crestmont
East Tennessee
 
the 74 is being made into a trailer and is stripped down to the shell, i would be willing to sell that carburetor and any other parts if you know
someone that's interested, just email me a offer

Thanks David
--
78 Royal #749
74 #136
Oversteer is when you hit the wall with the rear of the car, understeer is when you hit the wall with the front of the car. Hp is how fast you hit the
wall, and torque is how far you take the wall with you when you hit it.
 
The carburetor in our 78 403 is 17058559. Sometimes carb numbers change during the year. This GMC was built in January of 78. Our other 78 403 GMC was built in December of 77. I believe there's 122 VIN's between them. I'll check the carb numbers on it tomorrow. Be interesting.

Bob Dunahugh
 
FYI
Handy reference for carb numbers!

http://www.carburetion.com/Number/bynumber.asp

> The carburetor in our 78 403 is 17058559. Sometimes carb numbers
> change during the year. This GMC was built in January of 78. Our other 78
> 403 GMC was built in December of 77. I believe there's 122 VIN's between
> them. I'll check the carb numbers on it tomorrow. Be interesting.
>
> Bob Dunahugh
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
 
For carb kits and parts go here.

http://quadrajetparts.com/quadrajet-carburetor-rebuild-kits-c-128_33.html?sort=3a

> FYI
> Handy reference for carb numbers!
>
> http://www.carburetion.com/Number/bynumber.asp
>
> On Sat, Mar 11, 2017 at 10:42 PM, Bob Dunahugh

>
>> The carburetor in our 78 403 is 17058559. Sometimes carb numbers
>> change during the year. This GMC was built in January of 78. Our other 78
>> 403 GMC was built in December of 77. I believe there's 122 VIN's between
>> them. I'll check the carb numbers on it tomorrow. Be interesting.
>>
>> Bob Dunahugh
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
>
> --
> Bruce Hart
> 1976 Palm Beach
> Milliken, Co
> GMC=Got More Class
>
>

--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
 
Just checked the other carb on the 78 - 403. Same 17058559 carb. So this is the number for Dec of 77, and Jan of 78. Bob Dunahugh

________________________________
From: Bob Dunahugh
Sent: Saturday, March 11, 2017 11:42 PM
To: gmclist
Subject: RE: Carburetor

The carburetor in our 78 403 is 17058559. Sometimes carb numbers change during the year. This GMC was built in January of 78. Our other 78 403 GMC was built in December of 77. I believe there's 122 VIN's between them. I'll check the carb numbers on it tomorrow. Be interesting.

Bob Dunahugh
 
:x

So today i went to smog with the rebuilt carburetor my brother did and it failed HORRIBLY as a gross polluter, so i tired to lean it out and even with
the mixture screws all the way in, the engine still runs and they had it on the machine measuring it and wasn't changing the amount roughly 3000 hc
(ppm) at idle, it's a BAD carburetor

:x David :x
--
78 Royal #749
74 #136
Oversteer is when you hit the wall with the rear of the car, understeer is when you hit the wall with the front of the car. Hp is how fast you hit the
wall, and torque is how far you take the wall with you when you hit it.
 
You are miss lead, lean is not good as there is now less gas to ignite.
I help at least 3-5 people per month pass smog.

> :x
>
> So today i went to smog with the rebuilt carburetor my brother did and it
> failed HORRIBLY as a gross polluter, so i tired to lean it out and even with
> the mixture screws all the way in, the engine still runs and they had it
> on the machine measuring it and wasn't changing the amount roughly 3000 hc
> (ppm) at idle, it's a BAD carburetor
>
> :x David :x
> --
> 78 Royal #749
> 74 #136
> Oversteer is when you hit the wall with the rear of the car, understeer is
> when you hit the wall with the front of the car. Hp is how fast you hit the
> wall, and torque is how far you take the wall with you when you hit it.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
God I really hate the Smog racket here in Cali especially when they say ' There's no Cats 'and you have to tell them over and over they didn't come
with em. I feel your pain.
--
Tony Cook
77' Kingsley ' SuperSession 77 '
Torrance Beach,CA
 
Go to another shop.

> God I really hate the Smog racket here in Cali especially when they say '
> There's no Cats 'and you have to tell them over and over they didn't come
> with em. I feel your pain.
> --
> Tony Cook
> 77' Kingsley ' SuperSession 77 '
> Torrance Beach,CA
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
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