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Quadrajet Carb Talk and Tips / choke pull offs w/ spring and w/o spring
« Last post by wazzabie on Today at 03:22:26 PM »
There are two part numbers for the choke pull off on carb 17058213.  CPA439 or CPA127

It appears to me the only difference is one has an spring and the other part number has no spring. 

Why do some choke pull offs have no spring?  How do I know what is the correct application?
2
Quadrajet Parts and Numbers / Re: Metering Rod and Jet Combos
« Last post by SUPRCHY on February 21, 2026, 02:27:59 PM »
Just found another one:

Jet & Rod Kit#   17067817: E4M

 .077"     Primary Jets
 61U       Primary Metering Rods
 DD        Secondary Metering Rods
 "K"        Secondary Hanger

SUPRCHY
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Quadrajet Parts and Numbers / Re: Do these Primary Rods EXIST or are they just TYPOs?
« Last post by SUPRCHY on February 21, 2026, 02:19:59 PM »
Just found the answer to question #1. I just had my hands on a Primary Rod marked 37J from a 7045193. Since the 9C calls for a 7043537 and the rod is marked 37J(which falls inline 7043536 = 36J & 7043538 = 38J) I feel pretty good about this one.

While question #4 asks about the Auxiliary Rod and this one is marked 35B. If we assumed it is the original that would be a 17052814?
No way to know for sure, but this carburetor was not a reman and it looks fairly original to me.

Let me know if you have any evidence either way.

SUPRCHY
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Quadrajet Parts and Numbers / Do these Primary Rods EXIST or are they just TYPOs?
« Last post by SUPRCHY on February 20, 2026, 09:48:20 AM »
Doing some Quadrajet research and I've found some Primary & Auxiliary Rod numbers listed in the 9C's that don't show up on any lists or internet searches. I hope someone has dealt with these before. Thanks for any help given.

      P. ROD#              9C-              CARB#
1.)  7043537             2012            7045193
2.) 17053335            3091T          17058512
3.) 17053339            2014-A         17057533

   AUX. ROD#            9C-              CARB#
4.) 17052814            2012            7045193/230
4.) 17052815            1045            7045548

Interesting how many were Cadillac carbs.

SUPRCHY
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Quadrajet Carb Talk and Tips / Re: Looking for the thickness of those pressed in Quadrajet secondary orifice plates
« Last post by DJD OLDS 4MC on February 19, 2026, 04:14:49 PM »
In case anyone is interested attached is information I found about the secondary orifice plates in a Quadrajet.
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Quadrajet Carb Talk and Tips / Casting numbers
« Last post by gstocker on February 18, 2026, 03:24:16 PM »
Is there a site out there that has the baseplate numbers and what they're carb number it belongs to? Bought a 7044202 from a swap meet but the baseplate isn't the correct one. Plus are all baseplates from 72-75 (chevy carb) the same including the 1901 edelbrock?
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Quadrajet Carb Talk and Tips / Re: Idle speed solenoid
« Last post by Turbo26T on February 18, 2026, 02:10:00 PM »
Kenth : Thanks for your input...I , however , am well versed in solenoid operation in regards to throtte speed increase ..No offense intended ,  but Im not wanting to know how they operate , setting procedure , wiring diagrams , etc
 I am simply looking for a solenoid strong enough to open the throtte against the return spring pressure and increase the RPM's when the A/T is in gear , when the A/C compressor comes on @ Idle....
 Thanks again for your input
  Stan
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Quadrajet Carb Talk and Tips / Re: Idle speed solenoid
« Last post by Kenth on February 18, 2026, 01:56:23 PM »
Normally, the idle speed is set with the solenoid active, A/T gear engaged and AC on.
No further increase in speed for AC on should be necessary.
With the solenoid inactive, the speed is set 100-150 rpm lower.
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Quadrajet Carb Talk and Tips / Re: Secondary vacuum draw vs air door opening - test
« Last post by lightning boy on February 18, 2026, 01:07:14 PM »
That's interesting. I would have thought the vacuum would have been much less.
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Quadrajet Carb Talk and Tips / Re: Idle speed solenoid
« Last post by Turbo26T on February 18, 2026, 10:05:44 AM »
Kenth : Its a #17082224 ..but I've tried factory Q/Jet idle-stop/idle-speed  solenoids and they are not strong enough to open the throttle from curb idle . ..Only after the throttle is opened , will  the factory solenoid extend and hold  idle speed at an increased RPM. As I understand it , they were used to retract after the ign is turned off to completely close the throttle plates to negate "Dieseling"
 What I'm looking for is a solenoid that has enough force to increase idle speed when the A/C compressor comes on without having to blip the throttle pedal...Either a vacuum or an electric (12V) solenoid can be made to work..
 Hopefully this may clarify what I'm trying to accomplish..
 Stan
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