fits model: 440. make: Mopar, Chrysler, Plymouth, Dodge. year: 1974–1977.

( Brand: Carter ), ( Manufacturer Part Number: TQ-6545 ), ( Type: Carburetor ), ( Oe/oem Part Number: 3751472 ), ( Features: Thermoquad )
The Carter TQ-6545 NOS (New Old Stock) ThermoQuad carburetor is a genuine Mopar replacement part, specifically designed for 1974-1977 Chrysler, Plymouth, and Dodge vehicles equipped with the 440 cubic inch engine. This carburetor is an exact reproduction of the original ThermoQuad carburetor that was factory installed in these classic American muscle cars.
The TQ-6545 carburetor features a quad-barrel design, with four separate barrels, each equipped with its own choke and throttle butterfly. This configuration allows for a more precise fuel-air mixture, resulting in improved engine performance, increased power, and better fuel economy compared to a single or dual-barrel carburetor.
The ThermoQuad design also includes a built-in vacuum secondary system, which enriches the fuel-air mixture under vacuum conditions, such as during acceleration. This results in smoother power delivery and improved drivability.
The TQ-6545 carburetor comes completely rebuilt and ready to install. It includes new gaskets, seals, and hardware, ensuring a perfect fit and reliable operation. The carburetor body is made of high-quality cast aluminum, and the barrels and throttle shafts are made of forged billet steel, ensuring durability and resistance to warping or bending.
The TQ-6545 carburetor also includes a factory-calibrated idle mixture circuit, which allows for easy and accurate adjustment of the idle mixture screws. This eliminates the need for complex adjustments or guesswork, making it easier for the DIY enthusiast or professional mechanic to get the carburetor set up correctly.
The ThermoQuad design also includes a built-in air cleaner element, which is accessible through the top of the carburetor. This makes it easy to replace the element when needed, without having to remove the entire air cleaner assembly.
In summary, the Carter TQ-6545 NOS ThermoQuad carburetor is a high-performance, factory-correct replacement for the original carburetor on 1974-1977 Chrysler, Plymouth, and Dodge 440 engines. It offers improved engine performance, increased power, and better fuel economy, and is easy to install and adjust. With its precise design and durable construction, this carburetor is a must-have for any enthusiast restoring or maintaining a classic Mopar muscle car.
The Carter TQ-6545 NOs ThermoQuad carburetor is a popular choice amongst enthusiasts restoring or upgrading 1974-1977 Chrysler, Plymouth, and Dodge 440 engines. This carburetor offers several advantages and disadvantages that are essential to consider before making a purchase.
Advantages:1. Improved Performance: The ThermoQuad design provides better fuel mixture and air flow, resulting in improved engine performance and throttle response.
2. Fuel Efficiency: The quad-barrel design allows for fine-tuning of the fuel mixture, which can lead to increased fuel efficiency.
3. Easy Installation: The Carter TQ-6545 NOs is a direct replacement for the original two-barrel carburetors on these vehicles, making installation relatively straightforward.
4. Availability: These carburetors are widely available from various suppliers, ensuring easy access to replacement parts and maintenance components.
Disadvantages:1. Complexity: The ThermoQuad carburetor features more complex components and requires more fine-tuning compared to a traditional two-barrel carburetor.
2. Cost: The Carter TQ-6545 NOs is generally more expensive than a stock two-barrel carburetor.
3. Maintenance: Due to the more complex design, maintaining the ThermoQuad carburetor may require additional time and expertise.
In conclusion, the Carter TQ-6545 NOs ThermoQuad carburetor is an excellent choice for those seeking improved engine performance and fuel efficiency from their 1974-1977 Chrysler, Plymouth, or Dodge 440. However, it comes with added complexity, increased cost, and additional maintenance requirements. Ultimately, the decision to purchase this carburetor depends on your priorities, experience level, and budget.
If you are looking for a straightforward installation without significant additional costs or maintenance, a stock two-barrel carburetor may be a more suitable option. On the other hand, if you're willing to invest in a more complex system that offers enhanced performance and fuel efficiency, the Carter TQ-6545 NOs ThermoQuad carburetor is a worthy consideration.
NOS MOPAR Carter THERMOQUAD Carburetor in original factory box. Thanks!, Original Application 1974-1977 Chrysler Plymouth Dodge 440 w/ Automatic Transmission.