fits make: Pontiac, Rochester. year: 1977.

( Brand: Rochester ), ( Manufacturer Part Number: 17057253 ), ( Choke Type: Electric ), ( Type: Carburetor ), ( Mounting Flange Type: Spread Bore ), ( Features: Quadrajet ), ( Vintage Part: Yes )
The Rochester 17057253 Quadrajet carburetor is a classic automotive component, specifically designed for the 1977 Pontiac Trans Am. This carburetor is a testament to the engineering prowess of the past, offering reliable performance and smooth operation.
The Rochester Quadrajet carburetor is renowned for its ability to deliver a consistent fuel-air mixture to the engine, ensuring optimal combustion and engine performance. This particular model, the 17057253, is specifically designed for the powerful V8 engines that were common in muscle cars of the 1970s, like the Pontiac Trans Am.
The carburetor features a four-barrel design, with each barrel feeding a cylinder in the engine. This design allows for a larger fuel intake, which can provide more power and torque. The Quadrajet carburetor also includes a secondary throttle body, which helps to improve engine performance at high rpm.
The Rochester 17057253 Quadrajet carburetor is also known for its ease of adjustment. It includes a variety of adjustment screws that allow you to fine-tune the carburetor to your specific engine and driving conditions. This can help to improve fuel economy, reduce emissions, and maximize engine performance.
The Quadrajet carburetor is also built to last. It features robust construction, with a cast aluminum body and durable components. This means that it can withstand the rigors of daily driving, and can provide reliable performance for many years to come.
In summary, the Rochester 17057253 Quadrajet carburetor is a high-quality, reliable, and easy-to-use component for your 1977 Pontiac Trans Am. It delivers consistent fuel-air mixtures, improves engine performance, and is built to last. Whether you're restoring a classic muscle car or simply maintaining your daily driver, this carburetor is a great choice.
Pros of buying a Rochester 17057253 1977 Pontiac Trans Am Quadrajet carburetor:1. Authenticity: This is an original Rochester Quadrajet carburetor designed for 1977 Pontiac Trans Am, ensuring compatibility and fitment with your vehicle.
2. Reliability: The Quadrajet carburetor is renowned for its performance and reliability, providing smooth fuel delivery and consistent power output.
3. Availability of parts: With its popularity, the Quadrajet carburetor has a wide range of available aftermarket parts and support, making repairs and maintenance easier.
4. Cost-effective: Compared to newer fuel injection systems, the Quadrajet carburetor is generally less expensive to purchase and maintain.
Cons of buying a Rochester 17057253 1977 Pontiac Trans Am Quadrajet carburetor:1. Requires tuning: The Quadrajet carburetor may require tuning to achieve optimal performance and fuel efficiency, especially after a rebuild or installation in a different engine.
2. Limited electronic features: Carburetors do not offer the same level of engine management and control as electronic fuel injection systems, which may affect fuel efficiency and emissions compliance.
3. Potential for fuel leaks: Carburetors have more moving parts and seals than electronic fuel injection systems, which can result in fuel leaks if not properly maintained.
Conclusion:Buying the Rochester 17057253 1977 Pontiac Trans Am Quadrajet carburetor can be a great choice for those seeking an authentic and reliable fuel delivery system for their classic vehicle. However, it's essential to consider the potential need for tuning and the limitations of carburetors compared to newer fuel injection systems. If you are comfortable with the maintenance requirements and are looking for a cost-effective solution, then this carburetor could be a good fit for your 1977 Pontiac Trans Am.
It is the 800 cfm and will also work great on Pontiac 400 engines. This 17057253 Quadrajet carb is for the 1977 Trans Am L-80 with 403 Oldsmobile engine. An installation and tuning instruction sheet is included.