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Noob carburetor questions...

Started by Brian350, August 24, 2026, 08:37:24 PM

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Brian350

Can someone please identify this carb, and does it look like all of it's parts are intact? Am I missing the idle up solenoid? It's currently on my 69 GT500...
You never know what's around the next bend in the road.

Brian350

You never know what's around the next bend in the road.

J_Speegle

#2
Looks like (according to the air horn) the main body is a C9AF-9510-N. These were used originally on 69 428 Mustangs & GT500's equipped with automatic transmissions.

For your application, yes you are missing the idle solenoid, the factory fuel filter and of course the supply line is some aftermarket or made up piece. Looks like someone rattle can finished the carb at some point.
Jeff Speegle- Mustang & Shelby detail collector, ConcoursMustang.com mentor :) and SAAC Concours Advisor

JohnSlack

Forget the obvious missing parts, you need to know what is out of specifications on the inside.

"The long and winding road."

Bob Gaines

In conclusion the carb appears to be missing minimal parts (available at NPD or Mansfield Mustang) and it is correct for your auto 69 GT500.
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

Shelbypat

#5
It looks like the hollow stud has been deleted also.

 Why idle solenoid ?
Not a dashpot !!!
Solenoid come with AC maybe ?
Patrick
Canada

Special Ed

electric solinoid was only used on 70 cj  mustang cougars cars marked ac. and ad and used manual chokes.

Brian350

Thanks everyone!! Very helpful. I am actually entertaining replacing this carb altogether. It seems the adjustment screws are somewhat loose and maybe not staying set causing the carb to underperform and need regular adjustment. Will be looking at the jets as well...
You never know what's around the next bend in the road.

Bob Gaines

Quote from: Shelbypat on August 25, 2026, 09:52:12 AMIt looks like the hollow stud has been deleted also.

 Why idle solenoid ?
Not a dashpot !!!
Solenoid come with AC maybe ?
A typo no doubt. No electric solenoid on 69/70 Shelby.
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

pbf777

Quote from: Brian350 on August 25, 2026, 12:33:47 PMIt seems the adjustment screws are somewhat loose and maybe not staying set . . . . .

    If this is in reference to the "idle adjustment screws", the restriction in rotation (and sealing) is maintained by simple cork packings that press into the recessed bores and that the idle mixture screws thread through.   :)

    Scott.

J_Speegle

Poor choice of words  :(  fell into the "trap"  since the OP used the term. Agreed a non-electrical Dashpot mlike used in 66 for example on many automatics
Jeff Speegle- Mustang & Shelby detail collector, ConcoursMustang.com mentor :) and SAAC Concours Advisor

Brian350

Quote from: J_Speegle on August 25, 2026, 01:51:33 PMPoor choice of words  :(  fell into the "trap"  since the OP used the term. Agreed a non-electrical Dashpot mlike used in 66 for example on many automatics

Yeah, you can't count on me for correct terminology! I'm learning a lot...
You never know what's around the next bend in the road.