fits model: 2x4, Hemi. make: Mopar.

( Brand: Carter ), ( Manufacturer Part Number: 3705S ), ( Type: Carburetor )
The Carter AFB 426 dual carburetors, model numbers 3705S and 3861S, are a pair of high-performance carburetors designed specifically for the Mopar 426 Hemi engine. These carburetors are a key component in maintaining the powerful and iconic performance of these classic automobiles.
The Carter 3705S and 3861S carburetors are equipped with a unique and advanced design, featuring a dual four-barrel configuration. This design allows for an increased airflow into the engine, which directly translates into more power and better fuel efficiency. The 3705S carburetors are specifically designed for use with the Mopar 426 Hemi engines, and the 3861S carburetors are often used as a replacement or upgrade for the 3705S in high-performance applications.
Both carburetors feature a wedge-shaped intake manifold, which is a signature design element of the Mopar 426 Hemi engine. The wedge shape allows for a more efficient and even fuel distribution, resulting in improved engine performance and power. The carburetors also feature a large, 850 CFM airflow capacity, which is essential for the high-performance demands of the Mopar 426 Hemi engine.
The Carter 3705S and 3861S carburetors are equipped with automatic fuel level sensing (AFB) systems. This feature ensures that the carburetors maintain an optimal fuel-air mixture, regardless of engine load or driving conditions. The AFB system uses a float-style fuel level sensor that constantly monitors the fuel level in the carburetor bowls and adjusts the fuel flow accordingly. This results in a more efficient and consistent fuel delivery, which in turn improves engine performance and fuel economy.
The carburetors also feature a unique intake manifold design, which includes a large, venturi-shaped throttle body. This design allows for a more efficient fuel-air mixture, resulting in improved engine performance and power. The carburetors are also equipped with vacuum secondary butterflies, which help to improve engine performance at higher engine speeds and under heavy load conditions.
In addition to their performance benefits, the Carter 3705S and 3861S carburetors also feature a classic and iconic appearance. The polished aluminum finish and chrome accents give these carburetors a high-end and sophisticated look, making them a popular choice for both classic car enthusiasts and hot rod builders.
Overall, the Carter 3705S and 3861S dual carburetors are a high-performance and high-quality upgrade for any Mopar 426 Hemi engine. Their advanced design features, including the AFB system, venturi-shaped throttle body, and vacuum secondary butterflies, ensure improved engine performance and fuel efficiency. And their classic and iconic appearance makes them a stylish and desirable addition to any classic car or hot rod.
Pros of buying Carter 3705S Mopar 426 AFB Dual Carburetors (3861S Hemi Wedge):1. Improved engine performance: Dual carburetors allow for a more efficient fuel-air mixture, which can result in increased horsepower and torque.
2. Classic appearance: The Carter 3705S has a classic appearance that is often associated with high-performance vehicles, which can add to the car's overall appeal.
3. Easy to adjust: Carter carburetors are known for their ease of adjustment, which can help you fine-tune the engine's performance to your specific needs.
4. Durable construction: Carter carburetors are made with high-quality materials, such as cast aluminum, which can help them withstand the rigors of high-performance use.
Cons of buying Carter 3705S Mopar 426 AFB Dual Carburetors (3861S Hemi Wedge):1. Complex installation: Installing dual carburetors can be a complex process, which may require specialized tools and expertise.
2. Higher cost: Dual carburetors can be more expensive than a single carburetor, both in terms of the cost of the carburetors themselves and the additional labor required for installation.
3. Fuel efficiency: Dual carburetors can sometimes reduce fuel efficiency, as they require more fuel to produce the same amount of power as a single carburetor.
4. Maintenance requirements: Dual carburetors may require more frequent maintenance, such as regular cleaning and adjustment, to maintain optimal performance.
Conclusion:If you are looking to increase the performance of your 426 Hemi engine, Carter 3705S AFB dual carburetors can be a great option. However, you should be aware of the potential complexity and cost associated with installation and maintenance. If you have the necessary skills and resources, the benefits of improved performance and classic appearance may outweigh the drawbacks.
Recommendation:If you are considering purchasing Carter 3705S AFB dual carburetors, I would recommend doing your research and consulting with a trusted mechanic or performance shop to ensure that the installation and maintenance requirements are within your capabilities. Additionally, consider the cost of the carburetors and the potential impact on fuel efficiency, and weigh these factors against the benefits of improved performance and classic appearance. Ultimately, the decision to purchase dual carburetors should be based on your specific needs and goals as a car owner.
This is a PAIR 2 Carter AFB carbs. The one has a tag 3861S, but both are the same factory dual quad carbs for 1960s Mopar. Need rebuilding due to sitting. These are high performance MOPAR Carter carbs.
Vintage and move freely. SHIPPING IS FOR THE 48 STATES, AND WILL COST MORE TO SHIP ELSEWHERE.