fits model: 400. make: Pontiac. year: 1973.

( Brand: Pontiac Rochester Carter Delco Gm ), ( Manufacturer Part Number: 9042S ), ( Type: Carburetor )
Introducing the Delco 9042S Carter Airtemp Barrel Carburetor, a premium replacement part designed specifically for 1973 Pontiac Rochester 400 Quadrajet engines. This carburetor core is a direct fit for GM vehicles, offering a reliable and efficient solution for maintaining optimal engine performance.
The Delco 9042S Barrel Carburetor is a 2-gross-barrel, quadrajet design, featuring four venturis that ensure precise fuel delivery to the engine. The barrels are meticulously crafted to provide excellent atomization, ensuring a clean and even fuel mixture for superior combustion. Each venturi is equipped with an adjustable idle mixture screw, enabling fine-tuning for smooth idle and improved cold-start performance.
The carburetor's fuel bowl is designed with a large capacity, providing ample fuel supply for the engine. The bowl is also vented, allowing excess fuel to escape during deceleration and maintain proper fuel pressure. The fuel level is regulated by a float, which adjusts automatically based on engine RPM, ensuring consistent fuel delivery and optimal engine performance.
The Delco 9042S Barrel Carburetor comes with a new gasket set, ensuring a proper seal between components for efficient fuel delivery and minimal leaks. The carburetor is also equipped with a new accelerator pump, ensuring quick and responsive acceleration.
The carburetor's throttle valve is controlled by a linkage connected to the accelerator pedal. The throttle valve opens to allow more air into the engine as the accelerator is pressed, increasing engine RPM and power output. The throttle valve is also equipped with a vacuum secondary, which enriches the fuel mixture under heavy load conditions, ensuring strong power delivery.
The Delco 9042S Barrel Carburetor is designed with durability in mind. The barrels and base are made of high-quality cast aluminum, providing excellent heat dissipation and resistance to corrosion. The carburetor also features robust fuel and vacuum hoses, ensuring reliable operation and minimal leaks.
In conclusion, the Delco 9042S Carter Airtemp Barrel Carburetor is a top-tier replacement part for 1973 Pontiac Rochester 400 Quadrajet engines. With its precise fuel delivery, efficient design, and robust construction, this carburetor offers reliable and efficient engine performance, ensuring a smooth and enjoyable driving experience.
The Pontiac Rochester Carter AC Delco 9042S 1973 400 Quadrajet barrel carburetor core 9042 is a popular choice for restoring or rebuilding old General Motors engines. Here are some pros and cons to help you make an informed decision about purchasing this carburetor core.
Pros:1. Authenticity: This carburetor core is original equipment manufactured (OEM) by GM, ensuring a perfect fit and compatibility with your 1973 Pontiac 400 Quadrajet engine.
2. Excellent Performance: The 9042S carburetor is known for its reliable performance and ability to deliver consistent fuel mixture to the engine.
3. Availability: As a commonly used carburetor in the classic car community, parts and resources for the 9042S are plentiful.
4. Cost-Effective: Buying a used core can save you significant money compared to purchasing a new carburetor.
5. Customizable: If you plan on modifying your engine, the 9042S carburetor can be easily tuned and adjusted to optimize performance.
Cons:1. Condition: Used carburetor cores can have various degrees of wear and tear, which may require additional repairs or rebuilding.
2. Shipping: The size and weight of the carburetor core could result in higher shipping costs.
3. Complexity: Carburetors can be intricate and difficult to rebuild, especially for those without experience.
4. Compatibility: Ensure the core you purchase is compatible with any modifications or upgrades you have made to your engine.
5. Potential for Contamination: Used cores could contain residual fuel, oil, or coolant, which may require cleaning before installation.
Conclusion:The Pontiac Rochester Carter AC Delco 9042S 1973 400 Quadrajet barrel carburetor core 9042 is an excellent choice for those looking for an authentic and cost-effective solution to restore or rebuild their classic General Motors engine. However, it is essential to consider the potential challenges that come with rebuilding a used carburetor core, such as condition, complexity, and compatibility. If you're confident in your abilities to rebuild the carburetor or have access to professional help, this core could be an excellent investment for your project. Otherwise, you may want to consider purchasing a new carburetor or seeking alternative options.
Quadrajet 4 barrel carburetor stamped 9042S date of C5 - appears for a 1973 Pontiac with 400 cu.in.