Carter 17058213 Quadrajet Jet Size - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rich72C10 · 08-21-2020, 12:43 PM

Hi guys. My brother is rebuilding my Carb, which is a Carter 17058213 Quadrajet. My understanding the previous truck owner got it an O'Riley's replacement - so it is not original to the truck.

Right now as they have it apart, they believe the Jet(s) are too small and wanting me to confirm what the stock jet size(s). They pulled a .064 jet. I am not finding anything really solid on my google searching and I know more about flying a rocket than Carb Jet sizes. Which is to say, nothing.

Can anyone help me with the original Jet sizes for a Carter 17058213 Quadrajet? This would be a Chevy C10, 350 SBC with a Turbo 350 Trans.

About all I could find close is the below (which is about the size they think my should be).

Found this: Carter had .098 primaries and .073 x .052 rods. This was for a 350 in a '71 Jimmy. It also had "CARTER AFB Competition Series” stamped on this carb.

Lee H · 08-21-2020, 12:50 PM

That carb originally came out on 1978 GMC HD truck and 79 Canada HD truck. Main jet size is 68, main rod 53. Good luck, Lee

**HO455** · 08-21-2020, 01:39 PM

My truck's primary jetting is.
The primary jets are 64's
The primary rods are B32's
With a generic 350 the A/F ratio is generally 14.5 from most RPMs.

geezer#99 · 08-21-2020, 03:10 PM

Look in Lars chart to find your carb numbers and compare jet/rod sizes.
While your present carb is jetted 63/40 and an original is 73/36 it doesn’t mean the carb you have is leaner. You gotta do the math.
Also don’t confuse carter quadrajets with carter afb’ s. The info you found is for a carter afb. The afb is the older version of the Edelbrock 1406.
Carter owned the quadrajet at one time.

https://www.digitalcorvettes.com/thr...by-lars.88376/

Rich72C10 · 08-21-2020, 03:33 PM

cool, thanks. That cart is cool!

Lars chart
What is on my truck now, 17058213
CHEV 78 GMC HD Truck
Main Jet .063
Main Rod .040
1.8606 Jet Area Cruise
2.5863 Jet Area WOT

But I assume this was in my truck originally:

7042208 CHEV 72 350 TRUCK SERIES 10 FED A/T
Main Jet 71
Main Rod 36
2.9413 Jet Area Cruise
3.4283 Jet Area WOT

~~~or~~~

7042910 CHEV 72 350 TRUCK SERIES 10 CA A/T
Main Jet .074
Main Rod .043
2.8486 Jet Area Cruise
3.7699 Jet Area WOT

68Gold/white · 08-21-2020, 03:35 PM

IF, IF you need help, contact CLiff @ Cliffshighperformance.com

THese days Cliff himself, answers the phone (or you get his machine, because he is already on the phone).

Stock jetting and other calibrations are not always the best these days. CLiff has the answers. His parts are ethanol resistant, also. No one else has that!

Lee H · 08-21-2020, 03:43 PM

Nice reference. Wonder if Lars is still active. I met him a times in the 90s in a few Tuning for Beer Tours. I have pictures somewhere of he and I tuning my 75 & my 65 Vette. Pulled the distributors and carbs, went though them.

Rich72C10 · 08-21-2020, 03:54 PM

they have the Carb buttoned up and sound like they are closer to the Jet sizes for the '72 specs. The engine has been completely rebuilt, which had not been touched since it rolled off the factory. Though they said the engine had been running way lean before (they think because of that O'Rilley's Carb).

Anyways, they are happy with the jets they put in. The guy helping my brother is one smart cookie. I am sure my engine is going to be happy to be away from all those ford engines! My brother's friend runs/owns http://www.modelaperformance.com/ Which @HO455 if you need a engine for your '29 Ford - that's the place to look first!

RichardJ · 08-21-2020, 10:37 PM

The Quadrajet is a spread bore carburetor made by Rochester. There was never any affiliation with Carter.

1971 - 1984 Carter did make a Thermoquad (TQ) with a spread bore throttle configuration. It was more of spread bore version of a Carter AVS. The most significant feature of the carb was the plastic (phenolic) center section.

geezer#99 · 08-21-2020, 11:11 PM

APpears I was wrong.
Carter didn’t buy out Rochester.
They just built quadrajets for Rochester carbs.
I think that’s an affiliation.
Close enough for you Richard!

68Gold/white · 08-22-2020, 10:54 AM

Quote:

Originally Posted by geezer#99

APpears I was wrong.
Carter didn’t buy out Rochester.
They just built quadrajets for Rochester carbs.
I think that’s an affiliation.
Close enough for you Richard!

Correct!!!

Rich72C10 · 08-22-2020, 11:54 AM

Yes, this I knew that the Carters are the same as the Rochester Quadrajets. My understand Carter stepped in (contracted) when Rochester could not keep up or something like that. So they are the same Carb between the two.

https://en.wikipedia.org/wiki/Quadrajet
Carter-built Quadrajets will have the name "Carter" cast into them, but are functionally identical to the Rochester-built equivalent.

08-21-2020, 12:43 PM	#1
Rich72C10 Mr. Cheyenne Join Date: Jun 2020 Location: Kyle, Texas Posts: 1,687	Carter 17058213 Quadrajet Jet Size Hi guys. My brother is rebuilding my Carb, which is a Carter 17058213 Quadrajet. My understanding the previous truck owner got it an O'Riley's replacement - so it is not original to the truck. Right now as they have it apart, they believe the Jet(s) are too small and wanting me to confirm what the stock jet size(s). They pulled a .064 jet. I am not finding anything really solid on my google searching and I know more about flying a rocket than Carb Jet sizes. Which is to say, nothing. Can anyone help me with the original Jet sizes for a Carter 17058213 Quadrajet? This would be a Chevy C10, 350 SBC with a Turbo 350 Trans. About all I could find close is the below (which is about the size they think my should be). Found this: Carter had .098 primaries and .073 x .052 rods. This was for a 350 in a '71 Jimmy. It also had "CARTER AFB Competition Series” stamped on this carb. __________________ Richard *'72 Chevy C10 Cheyenne Super WHT/MED BRONZE/WHT SBC 350 \| TH350 \| LWB \| AC \| Buddy Seats Upgrades:** Tilt \| Front Sway Bar \| Radio \| Sliding Window \| Bed Spare w/Lock Bed Rails \| Full LEDs \| Courtesy Lights \| Tachometer \| Glovebox Lock & Light \| Head Light Relays \| *Upgraded Fully Super Trim

08-21-2020, 12:50 PM	#2
Lee H Registered User Join Date: Jun 2010 Location: Upland Ca Posts: 4,147	Re: Carter 17058213 Quadrajet Jet Size That carb originally came out on 1978 GMC HD truck and 79 Canada HD truck. Main jet size is 68, main rod 53. Good luck, Lee __________________ 1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703

08-21-2020, 01:39 PM	#3
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,350	Re: Carter 17058213 Quadrajet Jet Size My truck's primary jetting is. The primary jets are 64's The primary rods are B32's With a generic 350 the A/F ratio is generally 14.5 from most RPMs. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

08-21-2020, 03:10 PM	#4
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,731	Re: Carter 17058213 Quadrajet Jet Size Look in Lars chart to find your carb numbers and compare jet/rod sizes. While your present carb is jetted 63/40 and an original is 73/36 it doesn’t mean the carb you have is leaner. You gotta do the math. Also don’t confuse carter quadrajets with carter afb’ s. The info you found is for a carter afb. The afb is the older version of the Edelbrock 1406. Carter owned the quadrajet at one time. https://www.digitalcorvettes.com/thr...by-lars.88376/

08-21-2020, 03:33 PM	#5
Rich72C10 Mr. Cheyenne Join Date: Jun 2020 Location: Kyle, Texas Posts: 1,687	Re: Carter 17058213 Quadrajet Jet Size cool, thanks. That cart is cool! Lars chart What is on my truck now, 17058213 CHEV 78 GMC HD Truck Main Jet .063 Main Rod .040 1.8606 Jet Area Cruise 2.5863 Jet Area WOT But I assume this was in my truck originally: 7042208 CHEV 72 350 TRUCK SERIES 10 FED A/T Main Jet 71 Main Rod 36 2.9413 Jet Area Cruise 3.4283 Jet Area WOT ~~~or~~~ 7042910 CHEV 72 350 TRUCK SERIES 10 CA A/T Main Jet .074 Main Rod .043 2.8486 Jet Area Cruise 3.7699 Jet Area WOT __________________ Richard *'72 Chevy C10 Cheyenne Super WHT/MED BRONZE/WHT SBC 350 \| TH350 \| LWB \| AC \| Buddy Seats Upgrades:** Tilt \| Front Sway Bar \| Radio \| Sliding Window \| Bed Spare w/Lock Bed Rails \| Full LEDs \| Courtesy Lights \| Tachometer \| Glovebox Lock & Light \| Head Light Relays \| *Upgraded Fully Super Trim

08-21-2020, 03:35 PM	#6
68Gold/white Registered User Join Date: Sep 2011 Location: Ark City, Kansas Posts: 3,405	Re: Carter 17058213 Quadrajet Jet Size IF, IF you need help, contact CLiff @ Cliffshighperformance.com THese days Cliff himself, answers the phone (or you get his machine, because he is already on the phone). Stock jetting and other calibrations are not always the best these days. CLiff has the answers. His parts are ethanol resistant, also. No one else has that!

08-21-2020, 03:43 PM	#7
Lee H Registered User Join Date: Jun 2010 Location: Upland Ca Posts: 4,147	Re: Carter 17058213 Quadrajet Jet Size Nice reference. Wonder if Lars is still active. I met him a times in the 90s in a few Tuning for Beer Tours. I have pictures somewhere of he and I tuning my 75 & my 65 Vette. Pulled the distributors and carbs, went though them. __________________ 1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703

08-21-2020, 03:54 PM	#8
Rich72C10 Mr. Cheyenne Join Date: Jun 2020 Location: Kyle, Texas Posts: 1,687	Re: Carter 17058213 Quadrajet Jet Size they have the Carb buttoned up and sound like they are closer to the Jet sizes for the '72 specs. The engine has been completely rebuilt, which had not been touched since it rolled off the factory. Though they said the engine had been running way lean before (they think because of that O'Rilley's Carb). Anyways, they are happy with the jets they put in. The guy helping my brother is one smart cookie. I am sure my engine is going to be happy to be away from all those ford engines! My brother's friend runs/owns http://www.modelaperformance.com/ Which @HO455 if you need a engine for your '29 Ford - that's the place to look first! __________________ Richard *'72 Chevy C10 Cheyenne Super WHT/MED BRONZE/WHT SBC 350 \| TH350 \| LWB \| AC \| Buddy Seats Upgrades:** Tilt \| Front Sway Bar \| Radio \| Sliding Window \| Bed Spare w/Lock Bed Rails \| Full LEDs \| Courtesy Lights \| Tachometer \| Glovebox Lock & Light \| Head Light Relays \| Upgraded Fully Super Trim Last edited by Rich72C10; 08-21-2020 at 04:01 PM.*

08-21-2020, 10:37 PM	#9
RichardJ Registered User Join Date: Apr 2010 Location: So Cal Posts: 1,466	Re: Carter 17058213 Quadrajet Jet Size The Quadrajet is a spread bore carburetor made by Rochester. There was never any affiliation with Carter. 1971 - 1984 Carter did make a Thermoquad (TQ) with a spread bore throttle configuration. It was more of spread bore version of a Carter AVS. The most significant feature of the carb was the plastic (phenolic) center section. Attached Images __________________ '67 GMC 2500, 292, 4spd, AC

08-21-2020, 11:11 PM	#10
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,731	Re: Carter 17058213 Quadrajet Jet Size APpears I was wrong. Carter didn’t buy out Rochester. They just built quadrajets for Rochester carbs. I think that’s an affiliation. Close enough for you Richard!

08-22-2020, 11:54 AM	#12
Rich72C10 Mr. Cheyenne Join Date: Jun 2020 Location: Kyle, Texas Posts: 1,687	Re: Carter 17058213 Quadrajet Jet Size Yes, this I knew that the Carters are the same as the Rochester Quadrajets. My understand Carter stepped in (contracted) when Rochester could not keep up or something like that. So they are the same Carb between the two. https://en.wikipedia.org/wiki/Quadrajet Carter-built Quadrajets will have the name "Carter" cast into them, but are functionally identical to the Rochester-built equivalent. __________________ Richard *'72 Chevy C10 Cheyenne Super WHT/MED BRONZE/WHT SBC 350 \| TH350 \| LWB \| AC \| Buddy Seats Upgrades:** Tilt \| Front Sway Bar \| Radio \| Sliding Window \| Bed Spare w/Lock Bed Rails \| Full LEDs \| Courtesy Lights \| Tachometer \| Glovebox Lock & Light \| Head Light Relays \| *Upgraded Fully Super Trim



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