Quadrajet Problem Solving > Quadrajet Parts and Numbers

Do I have a 73 SD q-jet?

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65WildCat:
Sorry to high jack, How many of the SD carbs were made?

PONTIAC SD-455 ENGINE PRODUCTION FIGURES
MODEL                         4-SPEED              AUTOMATIC         TOTAL
1973 Firebird Trans Am          72                    180                 252
1973 Firebird Formula          10                     33                    43
1974 Firebird Trans Am         212                    731                   943
1974 Firebird Formula          n/a                     n/a                    58
         
                              TOTAL      n/a                     n/a                  1,296

So, Would this mean the same amount of the SD carbs produced + a few replacement #'s as they weren't used anywhere else...

omaha:
where did the K/D switch for a turbo 400 get mounted to? just a thought, I used to have one and I can't remember.  You are correct that those are for mounting something-most likely the solenoid. I have some (carbs) similar but not exactly as yours in the pic.

Cliff Ruggles:
Yep, those holes are for the fast idle solenoid bracket.

Not sure about production numbers for the SD carburetors.  I've seen quite a few SR units, made in and after the model year run.  Doesn't seem to be any shortage of them.

Not sure about the  K/D switches.  Some early q-jets used a bracket from the carb linkage, most of hte later stuff must have been attached to the accl pedal inside the car.......Cliff

65WildCat:
Sorry to dig up an old thread, my question relates to the '73 - '74 SD carbs...

Do they have an adjustable APT system that can be utilized?

Is it set at the factory, similar to the large '71 - '74 Buicks..

Where is it located?, if so?

Cliff Ruggles:
No APT system was used on the Pontiac carburetors prior to 1975.

They did use an adjustable upper idle airbleeds screw in the airhorn, but it does not work the same was as an APT screw........Cliff

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