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65 and 66 Carter carbs used from factory

Started by Chuck Swanson, February 14, 2018, 06:41:23 PM

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Chuck Swanson

I have multiple 65-66 cars and almost all have the 1965 429 Carter AFB 3904 carb.  A couple have Rochester's.  I try to stick with Carters as I have a couple Carters rebuilt, and slightly easier to change on other cars if needed, or for troubleshooting.  I was looking in my 40' storage container for a 429 W/O AC Carter AFB 4168 carb to rebuild and put on my '66, but could only find more 3904s.  Most have date codes ending in 4 or 5.   

I then zoomed in to an old pic of my '66 during disassembly, and sure enough the orig carb on it when I bought was 3904.  Some low mileage cars I have, the carbs with the TR bolts look like were never removed. 

Bottom line, could the factory have used 3904s in some of the 66s too?  Not a big deal, but restoring '66 to original and I didn't know if there were any differences in 3904 vs 4168.  Any? 

Oh, I accidentally send my rebuilder a 1966 429 With AC (A.I.R.) Carter AFB 4171.  He only disassembled so far, and I asked him to wait before going any further.  What is the difference in the AIR carb (California emissions carb)?  I will probably sell the AIR carb.

Thanks, Chuck
CLC Lifetime
AACA Lifetime
Like 65-66 Club: www.facebook.com/6566Cadillac
66 DeVille Convertible-CLC Sr Wreath, (AACA 1st Jr 2021, Senior 2022, 1st GN 2022 Sr GN 2023), Audrain Concours '22 3rd in Class.
66 Sedan DeVille hdtp
66 Calais pillar sedan
66 Series 75 9-pass limo
65 Eldorado (vert w/bucket seats)
65 Fleetwood
07 DTS w/ Performance pkg.
67 Chevy II Nova (AACA Sr GN 2018)
69 Dodge Coronet R/T

"Cadillac Kid" Greg Surfas 15364

Chuck,
The difference between the AIR carb and the standard carb is in the metering rods and the primary clusters.
Greg Surfas
Cadillac Kid-Greg Surfas
Director Modified Chapter CLC
CLC #15364
66 Coupe deVille (now gone to the UK)
72 Eldo Cpe  (now cruising the sands in Quatar)
73 Coupe deVille
75 Coupe deElegance
76 Coupe deVille
79 Coupe de ville with "Paris" (pick up) option and 472 motor
514 inch motor now in '73-

Scot Minesinger

Greg,

I saw this post about 65/66 carbs and thanks again for selling me the two rebuilt 1966 Cadillac carbs you had.  I installed the second one on a 65 Cadillac this week, and it was a nice success.
Fairfax Station, VA  22039 (Washington DC Sub)
1970 Cadillac DeVille Convertible
1970 Cadillac Sedan DeVille
1970 four door Convertible w/Cadillac Warranty

"Cadillac Kid" Greg Surfas 15364

Cadillac Kid-Greg Surfas
Director Modified Chapter CLC
CLC #15364
66 Coupe deVille (now gone to the UK)
72 Eldo Cpe  (now cruising the sands in Quatar)
73 Coupe deVille
75 Coupe deElegance
76 Coupe deVille
79 Coupe de ville with "Paris" (pick up) option and 472 motor
514 inch motor now in '73-

Chuck Swanson

Quote from: "Cadillac Kid"  Greg Surfas 15364 on February 15, 2018, 10:41:56 AM
Chuck,
The difference between the AIR carb and the standard carb is in the metering rods and the primary clusters.
Greg Surfas

Thanks for the info!  Chuck
CLC Lifetime
AACA Lifetime
Like 65-66 Club: www.facebook.com/6566Cadillac
66 DeVille Convertible-CLC Sr Wreath, (AACA 1st Jr 2021, Senior 2022, 1st GN 2022 Sr GN 2023), Audrain Concours '22 3rd in Class.
66 Sedan DeVille hdtp
66 Calais pillar sedan
66 Series 75 9-pass limo
65 Eldorado (vert w/bucket seats)
65 Fleetwood
07 DTS w/ Performance pkg.
67 Chevy II Nova (AACA Sr GN 2018)
69 Dodge Coronet R/T