The Great Carter Thermoquad Numbers Decode List

Here are the Carter TQ number that I was able to lift from Govier's

interchange book. The numbers go from 1971 to 1974.

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

There always seems to be some confusion around here about TQ's and their

cfm ratings, etc, and I found a response to someone's question in the

'Performance Clinic' column by Dick Landy in the Aug/Sept 94 issue of Mopar

Muscle (page 9). It reads...

"There are two basic ThermoQuad Carburetors: one with 1 3/8" primaries and 2

1/4" secondaries for the 318 and 340 (A) engines and a Holley comparison CFM

of 650 CFM. The second one had 1 1/2" primaries and 2 1/4" secondaries with

a Holley comparison CFM of 820. It's used with some 360s and all the 'B'

engines. Actually, Carter called this one a 1000 CFM unit. Their airflow

numbers were measured differently than Holley. Also, some ThermoQuads had

the secondary air-door limited, which also decreased the CFM."