1974 Charger 440. Is this the correct Thermoquad carburator? Where to find the best rebuild kit?

[74ChargerSE440]

I want to let my Thermoquad carburator be rebuild that came with my car. But I first want to be sure this is the correct carburator for a 74 Charger 440. Can anyone confirm this? Does anyone has tips to ensure that past lessons learned are taken into practice in the rebuild?

Where can I find the best rebuild kit?

 

[RemCharger]

Should be a number by the yellow plug

 

[T2R9]

Whats the number on the bottom left front ear?

 

[The Capitan]

The number is on the rear drivers side of the carb base.

 

[Dodge Bros]

The Carburetor shop is the place I know of, and has a ton OEM Carter kit’s on hand, and tons thermoquads in stock.

THE CARBURETOR SHOP / Order information

 

[GTXDAN]

Rock - Auto has several kits for your carb. Just get the number off of the back of the left rear mounting flange.

 

[GTXDAN]

Application info:

Mdl YR Application Pri Sec Rod Bore
6452 74 360 HP MT F (3751433) 4098 5143 1962 1-1/2
6453 74 360 HP AT F (3751434) 4098 5143 2005 1-1/2
6454 74 360 HP MT CA (3751435) 4098 5143 1962 1-1/2
6455 74 360 HP AT CA (3751436) 4098 5143 2005 1-1/2
6456 74 400 HP MT F (3751439) 4098 5143 1966 1-1/2
6457 74 400 HP AT F (3751440) 4098 5143 1966 1-1/2
6459 74 400 HP AT CA 4098 5143 1966 1-1/2
6460 74 440 AT F early (3751443) 4098 5137 1966 1-1/2
6461 74 440 AT CA early (3751444) 4098 5137 2005 1-1/2
6462 74 440 HP AT F early (3751445) - - - 1-1/2
6463 74 440 HP AT CA early (3751446) - - - 1-1/2
6488 74 360 AT CA early (3751451) 4098 5143 1966 1-1/2
6489 74 400 AT F early (3751452) - - - 1-1/2
6496 74 400 AT CA 4098 5143 2005 1-1/2
6503 74 400 AT Export - - - 1-1/2 1
6518 H-440-3 Chrysler Industrial - - - 1-1/2
6545 74-77 440-1,-3 Truck F (3751472) 4098 5137 2024 1-1/2
6614 74 ??? 4098 5143 1966 1-3/8
6615 74 440-1 Truck AT 4098 5137 2024 1-1/2
6616 74 440-1 Truck AT CA 4098 5137 1966 1-1/2
9000 74 318 Export (3751474) - - - 1-3/8
9002 75-76 360 HP AT F IE (3830529) 4095 5143 1998 1-1/2


Abbreviations:
AT Automatic Transmission
MT Manual Transmission ( No reference means both transmissions )
Pri. Primary Jet
Sec. Secondary Jet
Rod Primary metering rod
Bore Primary throttle plate diameter in inches, All secondaries are 2-1/4"
HP High Performance
CA California application; generic for CA, N95
F Federal application ( No reference means both Federal and California.)
Can Canada application. Typically, Canada used Federal carbs except noted.
LD Light Duty
MD Medium Duty
HD Heavy Duty
LB Lean Burn, ESA. Noted on 76's. After 76, most F cars were LB (N92, N94).
IE Idle Enrichment
Alc Altitude Compensator. Few noted, most CA and last years had Alc (N96).
HA High Altitude
BV Bowl Vent valve
O2 Oxygen feedback solenoid

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. All TQs have the 2-1/4" diameter secondary throttle plates. The primary bore
size depended on application. In general, all 78 and later 318s and 360s and all 340s had
the smaller bore. Earlier 360s varied depending on application, most 400s and all 440s
had the large bore.

 

[Geoff 2]

Tips:
- replace the air valve [ AV ] dashpot, not normally in the o'haul kit. The internal rubber deteriorates. Sitting in the car, it is mounted on the right side, rear of carb.
- do not forget the two o rings.
- if you want to noticeably improve secondary performance, go to the A body forums, Fuel section. You will see my post dated Oct 2 on TQ upgrades.