Old quadrajet?

[Bonnewagon]

It looks to be an 84' Caddy automatic, but that "9" is confusing the hell out of me.

 

[G-Body_Vet]

Can anyone decode this one for me? This is my personal one.

17054938
0529

I'm thinking its off a cadillac.

This is how I interpret it:
1705 = '76-79
4 = last number of application year, but 4 doesn't make sense since that would be '84. If it was from '84, the first four numbers should have been 1708 instead.
9 = this number is usually "1" or "2" for federal emissions or "4" or "5" for California and "9" doesn't make sense.
3 = Cadillac
8 = Auto trans (usually even numbers for auto, odd for manual)
0529= Julian date, which would lead me to believe the 52nd day of 1979

You might want to re-check that number. I'm guessing it's probably 17059438 instead. I'm not trying to discredit Bonnewagon either. I just happen to have my Q-jet book here and I checked the numbers since that odd ball 9 was there.

 

[jmt455]

From the Carburetor Doctor web catalog: http://www.carbkitsource.com/carbs/catalog/Oldsmobile/index.html

These are the carb ID numbers for 1973-74 Olds 350 or 455:
7043250, 7043253, 7043255, 7043256, 7044280, 7044559, 17054938, 17054939, 17054940
It's for an automatic (final digit is an even number).

Can't tell any more detail from their catalog page. Probably need a 73 or 74 Olds Service Manual or Parts Book to verify exact application.

 

[Bonnewagon]

That nails it jmt455. They don't follow the codes, maybe service replacements?

 

[Smokes442]

From the Carburetor Doctor web catalog: http://www.carbkitsource.com/carbs/catalog/Oldsmobile/index.html

These are the carb ID numbers for 1973-74 Olds 350 or 455:
7043250, 7043253, 7043255, 7043256, 7044280, 7044559, 17054938, 17054939, 17054940
It's for an automatic (final digit is an even number).

Can't tell any more detail from their catalog page. Probably need a 73 or 74 Olds Service Manual or Parts Book to verify exact application.

Yeah thats what it is, its indeed a 17054938, well thats cool, i thought it was for maybe a 76-79 Olds/buick/pontiac, so it is possibly off a 455, but it looks like any of these carbs could be for either the 350 or 455, This i nice because i rebuilt it about 4 yrs. ago & just kept it in my house, the throttle plates are nice & snug 🙂 , Might work better then the 75 QJ i have that came off my 400.