fits model: A4, 340. make: Chrysler. year: 1968–1969.

( Brand: Carter ), ( Manufacturer Part Number: 4638SA ), ( Type: Carb )
The Carter A4 carburetor, specifically the model 4638SA, is a classic piece of automotive history. This carburetor was designed to fit 1968 and 1969 Chrysler 340, 383, and 413 engines, making it a popular choice for enthusiasts and restoration projects.
The Carter A4 carburetor is known for its robust design and reliable performance. It features a four-barrel, multi-venturi configuration, which allows for precise fuel and air mixture control. This design helps to ensure optimal engine performance across a wide range of RPMs and load conditions.
The 4638SA model is equipped with a vacuum secondary system, which helps to improve fuel economy and power delivery at low and medium engine speeds. This system uses a vacuum diaphragm to control the opening of the secondary throttle plates, allowing more fuel to be delivered to the engine when needed.
The carburetor also features an accelerator pump, which injects fuel into the intake manifold during rapid acceleration to prevent engine stalling. This pump is activated by a vacuum diaphragm that is connected to the accelerator pedal, ensuring that additional fuel is delivered exactly when it is needed.
The Carter A4 carburetor is also known for its easy tuning and adjustment capabilities. It features adjustable idle mixture and air fuel ratio screws, allowing for fine-tuning to optimize engine performance and reduce emissions. The carburetor also has a manual choke mechanism, which allows for easy starting in cold weather.
The 4638SA model is made from high-quality materials, including brass and aluminum, and is designed to withstand the rigors of daily driving and high-performance applications. The carburetor is also easy to clean and maintain, with removable bowls and float bowls, making it a popular choice for those looking to restore their classic Chrysler engine.
Overall, the Carter A4 4638SA carburetor is a reliable and high-performing carburetor that is well-suited for 1968 and 1969 Chrysler engines. Its robust design, easy tuning capabilities, and classic appearance make it a popular choice for enthusiasts and restoration projects.
Pros of buying a Carter A4 carburetor for a 1968-1969 Chrysler 340, 383, or 413:1. Reputation: The Carter A4 is a well-known and widely-used carburetor, which means it has a reputation for reliability and durability.
2. Availability of parts: Because the Carter A4 is a popular carburetor, it is relatively easy to find replacement parts, making repairs and maintenance simpler.
3. Adjustability: The Carter A4 is highly adjustable, allowing for fine-tuning of the engine's performance to meet the needs of different driving conditions.
4. Affordability: Compared to some other high-performance carburetors, the Carter A4 is relatively affordable, making it a good option for budget-conscious car owners.
Cons of buying a Carter A4 carburetor for a 1968-1969 Chrysler 340, 383, or 413:1. Complexity: The Carter A4 is a complex carburetor with many adjustments, which can make it difficult for some people to tune and maintain properly.
2. Performance limitations: While the Carter A4 is a good all-around carburetor, it may not provide the same level of performance as some high-end options, especially for high-horsepower applications.
3. Potential for fuel efficiency issues: The Carter A4 is known to consume more fuel than some other carburetors, which can result in lower fuel efficiency and higher fuel costs.
Conclusion: The Carter A4 is a reliable and widely-used carburetor that offers good performance and adjustability for 1968-1969 Chrysler 340, 383, and 413 engines. However, it is a complex carburetor that may require more maintenance and tuning than some other options. Additionally, while it is relatively affordable, it may not provide the same level of performance as some high-end options, and it may consume more fuel. Ultimately, the decision to purchase the Carter A4 should be based on your specific needs, budget, and desired level of performance.
Recommendation: If you are looking for a reliable and adjustable carburetor that is relatively affordable, the Carter A4 may be a good option for you. However, if you are looking for maximum performance and fuel efficiency, you may want to consider other options that may be more suitable for your specific application. It is always recommended to consult with a professional mechanic or carburetor specialist before making a purchase to ensure that you are making the best decision for your car.
1968 1969 Chrysler 340 383 413 Carter Carburetor 4638SA Date A4, Good for core or possible rebuild.