So...while cleaning out the black hole known as a "utility room" in my house, I stumbled upon a Carter Thermoquad carb...

Which is odd because I have NEVER owned a car with a TQ on it...NEVER! I have no idea where this thing came from and I can only figure that, somewhere out in the multiverse, my doppelganger has found a pristine Hemi AFB in his incredibly neat and well-organized utility room.

In any case, I took a bunch of pics...neglecting (of course)to photograph the numbers of the bloody thing so, I'm hoping that...possibly, someone here can do a sight ID on it so I know what I have. Can anyone ID this thing?

Here is pic 1

underside

My 73 looked exactly like that some of the later models have a flat pad or even a valve on the flat pad on the front center of the top aluminum housing.

The size of the primaries determine if it is a 700 or 800 cfm series.

Quote:

---

The Thermo-Quad was available with two primary throttle bore sizes, 1-3/8"
and 1-1/2". Flow ratings (CFM) vary depending on the source, but
the TQs with the 1-3/8" bores are listed as 750-800 CFM and those with the
1-1/2" primary throttle bores are rated at 800-850 CFM

---

This is what what a 71 looks like. Notice the idle screws.



If you are interested in selling it and it is either a 73 340 4speed or 74 440 HP carb please PM me.

After comparing pics of a 340 carb to yours I believe it is a big block carb this is the primaries on a 340 carb.

There should be numbers on the front of the base plate corner.

I use this website when it comes to thermoquads, maybe it will help you?
web page

The 4 digit number followed by an "S" will be stamped into the face of the rear drivers side mounting foot. The date code will also be stamped there (usually 3 digit day of year and one digit for the year)

This is 71-74 numbers.

The Great Carter Thermoquad Numbers Decode List



The letters listed under Models refer to carline (First letter of VIN)



Number Year Engine Trans Remarks Models

=======================================================================

4972S 1971 340 Manl VLBJRW

4973S 1971 340 Auto VLBJRW

6090S 1972 400 Auto RWPD

6138S 1972 340 Manl VLBJRW

6139S 1972 340 Auto VLBJRW

6140S 1972 400 Manl HP RW

6165S 1972 400 Manl HP w/air pump RW

6166S 1972 400 Auto HP w/air pump RW

6212S 340 MARINE

6318S 1973 340 Manl VLBJRW

6319S 1973 340 Auto VLBJRW

6320S 1973 400 Manl HP RW

6321S 1973 400 Auto HP RWPD

6322S 1973 440 Auto LP PDCY

6324S 1973 440 Manl HP RWPDC

6339S 1973 340 Manl w/N98 VLBJRW

6340S 1973 340 Auto w/N98 VLBJRW

6341S 1973 400 Manl HP w/N98 RW

6342S 1973 400 Auto HP w/N95-N98 RWPD

6394S 1972 340 Auto Export L

6410S 1973 440 Auto LP w/N98 PDCY

6411S 1973 440 Auto HP w/N95-N98 RWPDC

6452S 1974 360 Manl HP VLBJRW

6453S 1974 360 Auto HP VLBJRW

6454S 1974 360 Manl HP Calif VLBJRW

6455S 1974 360 Auto HP Calif VLBJRW

6456S 1974 400 Manl HP RW

6460S 1974 440 Auto LP Early PDCY

6461S 1974 440 Auto LP Calif Early PDCY

6462S 1974 440 Auto HP Early RWPDC

6463S 1974 440 Auto HP Calif Early RWPDC

6488S 1974 360 Auto RWPDC

6489S 1974 400 Auto HP Early RWPDC

6503S 1974 400 Auto HP Export W

9000S 1974 318 Both Export D

9013S 1974 360 Auto Late RW

9014S 1974 400 Auto HP Late RWPDC

9015S 1974 440 Auto HP Late RWPDC

9016S 1974 440 Auto HP Calif Late RWPDC

9023S 1974 440 Auto LP Late PDCY

9024S 1974 440 Auto LP Calif Late PDCY

9801S 1974 383 Auto Perf & Off road 800 CFM