39 Lasalle carburetor idenification

[Jack Carroll #18687]

I need help identifieing two carburetors I have.

  The shop manual spec. is a Carter # MDO-423-S,however what I
have is.

   #1. Carter #C-O [and under the C-O is] 6-121 [and on the center casting is] 0-396

   #2. Carter #WD-O [ and under that is] 6-321 [and on the center casting is] 0-433 and on the mounting flange is 277

Can anyone help ?
Thanks
Jack Carroll

[Philippe M. Ruel]

Original Carter carb for 1939 LaSalle was WDO-423-S (not MDO).

I dont find any mention of a C-O Carter carburetor. Through the 30s and 40s they made W-1, WA-1, WE, W-O, WDO, WCD and BB (Ball & Ball).

Carter WDO-460-S (1940 LaSalles) and WDO-506-S (1941 Cadillacs) had a 277 casting number on face of carb flange.

[Jack Carroll]

Philippe,
The C-O carb is on the car now and isnt running that well.[its the carb that was on the car when I bought it about 5 1`/2
years ago]it was sent out to be rebuilt about 3-4 years ago but I dont know if the C-O carb was the one I sent or the rebuilder kept mine as a core and sent me the C-O model or rebuilt mine and sent it back ot me. The second carb is a spare and if it is correct or if will work fine on my motor I was planning to that one rebuilt by a different
rebuilder and still be able ot use my car in the meantime.
Thanks
Still looking for info.

Jack Carroll

[Rhino 21150]

As always, Google it. Type the carb number and make into Google and see what comes back. You are bound to land on someones discussion forum and a tech site or two.

[Jack Carroll]

I am still trying to identify the 2 carbs.After closer examination, they are both Carter model WD-O #321.I also went
on a Google search and found that the WD-O was used on a
number of cars from 1935 - 1949 but no #321.

Still need help.
Jack Carroll

[Jack Carroll]

An additional note. The closest variation of the WD-O carb.
was # 322 used on a 1936 Pontiac.

Thanks, Jack Carroll

[Philippe M. Ruel]

*** The closest variation of the WD-O carb. was # 322 used on a 1936 Pontiac.***

1936 Pontiacs used a Carter W1-322S, not a WD-O.
W1-321S was used on 1935 Chevrolets.

The closest match to yours is WD-O-317S used on some Hupmobiles Sixes and Eights in 1935 and 1936. WD-O-328S was used in 1936 on Oldsmobiles Eights.

[jack Carroll]

Pillippe, Thanks a lot for the info. I guess the carbs I have
are most likely a 1935-1937 vintage. So I wonder if the #321 is compatable with the correct model for the 1939 LaSalle[ WD-O #423]or not.

Thanks again
Jack Carroll

[John Washburn]

Jack,

If your second Carburetor, with the Casting Number 277 on the face of the flange is for the following:

La Salle Eight, Models 40-50 & 40-52 for 1940.

This should be a WDO Dual Down-Draft Climatic Control Carbureter (Carter Spelling) -- Model 460S.

This carburetor will will just fine on the 39.

If you need more help drop me a note directly.

Good Luck

John Washburn
CLC #1067