fits model: 327, 300, Corvette, Impala. year: 1964–1965.

( Brand: General Motors ), ( Manufacturer Part Number: 3720SA ), ( Part Type: Hp Carburetor Motor )
The General Motors 3720SA Carter AFB carburetor was a popular choice for powering the V8 engines of various classic American vehicles, including the 1964 and 1965 Corvette and Impala models with a 327 or 300 cubic inch engine. This carburetor is a testament to the engineering prowess of the period, combining style, functionality, and performance in a single package.
The 3720SA Carter AFB carburetor is a dual-barrel, four-barrel-like carburetor, featuring two primary barrels and a single accelerator pump barrel. This design allows for a more efficient air-fuel mixture delivery to the engine, improving both power output and fuel efficiency. The primary barrels are equipped with vacuum secondaries, which engage at higher engine speeds to provide additional fuel for increased power.
The carburetor's body is constructed from cast aluminum, which not only provides excellent heat dissipation but also gives the unit a distinctive, classic appearance. The 3720SA features a single-plane intake manifold, which helps to reduce engine vibrations and improves power delivery. The carburetor is also equipped with a vacuum advance mechanical secondary system, which adjusts the timing of the secondary fuel supply based on engine load, improving performance and fuel economy.
The 3720SA Carter AFB carburetor is fitted with a manual choke, which allows the driver to manually adjust the air-fuel mixture for cold starts. The choke lever is located on the passenger side of the carburetor, making it easily accessible to the driver. The carburetor is also equipped with a mechanical fuel pump, which is driven by the engine's camshaft, ensuring a consistent fuel supply to the engine.
The 3720SA Carter AFB carburetor is easily identifiable by its distinctive appearance. The primary barrels are equipped with round venturi throats, while the secondary barrel has a rectangular shape. The unit is also adorned with chrome accents, adding a touch of elegance to its functional design.
In conclusion, the General Motors 3720SA Carter AFB carburetor is a classic piece of automotive engineering. Its dual-barrel design, vacuum secondaries, and mechanical advance system make it a highly efficient and powerful unit. The 3720SA is not only a functional component of the 1964 and 1965 Corvette and Impala engines but also a design icon, embodying the spirit of the American muscle car era.
Pros of buying a 1964-1965 Corvette or Impala with a 3720SA Carter AFB carburetor:1. Authenticity: The 3720SA Carter AFB carburetor was a popular choice for high-performance engines during the 1960s. Installing this carburetor on your Corvette or Impala will give your car a more authentic appearance and feel, as it was commonly used on high-performance applications.
2. Performance: The 3720SA Carter AFB carburetor is known for its ability to deliver a smooth and powerful performance. It has a large primary metering circuit and a secondary metering circuit, which allows it to provide a good air/fuel mixture at both low and high RPMs.
3. Availability: The 3720SA Carter AFB carburetor is still widely available on the aftermarket, which means that you can easily find replacement parts and technical support if you need it.
4. Cost-effective: Compared to newer fuel injection systems, the 3720SA Carter AFB carburetor is generally less expensive to install and maintain.
Cons of buying a 1964-1965 Corvette or Impala with a 3720SA Carter AFB carburetor:1. Complexity: Carburetors can be complex and require regular maintenance to ensure proper performance. The 3720SA Carter AFB carburetor is no exception, and it may require more frequent tuning and adjustments than some other types of fuel delivery systems.
2. Fuel economy: Carburetors are generally less efficient than fuel injection systems, which can result in poorer fuel economy. If fuel economy is a priority for you, you may want to consider a different type of fuel delivery system.
3. Cold starting: Carburetors can sometimes be difficult to start in cold weather, especially if the car has been sitting for an extended period of time. This is because the carburetor needs to warm up to properly mix the air and fuel.
Conclusion:If you are looking for a more authentic and powerful performance from your 1964-1965 Corvette or Impala, then a 3720SA Carter AFB carburetor may be a good option for you. However, you should be prepared for the potential complexity and maintenance requirements that come with installing a carburetor. Additionally, if fuel economy is a priority, you may want to consider a different type of fuel delivery system.
Recommendation:If you are unsure whether a 3720SA Carter AFB carburetor is the right choice for your car, I recommend consulting with a professional mechanic or carburetor specialist. They can help you evaluate your specific needs and recommend the best fuel delivery system for your vehicle.
This has the part number 3720SA on carb, along with 3851762 and a J4 tag. Buy More and Save. There is also a J4 on the carb. I highly encourage you to reference these part numbers as well inspect the photos ensure fitment and condition before purchase.
Warning: not for human consumption. We combine shipping on multiple orders to save you cash.: This is a Carter AFB Carburetor that originally came off of 1964-1965 Corvette or Impala with 300 hp 327 SBC. We mainly work with old car parts, but we get all sorts of odds and ends in stock from different sources.
Carter AFB 3720SA 4 BBL Carburetor 1964 1965 Corvette Impala 327 300 HP v8 SBC: condition: used, nothing is frozen up.