fits make: Pontiac. year: 1977.

( Brand: Pontiac Rochester Delco Genuine Gm ), ( Manufacturer Part Number: 17057523 ), ( Part Type: Ac Tran Carburetor )
Introducing the Delco GM 17057523 Quadrajet Barrel Carburetor, specifically designed for the 1977 Pontiac Trans Am 403 engine. This is a high-performance replacement carburetor that combines functionality and reliability for passionate car enthusiasts and racing aficionados.
The Delco 17057523 Quadrajet Carburetor is an upgraded version of the original factory-installed carburetor, offering improved air/fuel mixture delivery that translates to enhanced combustion efficiency and increased horsepower. It comes with four external throttle bodies, each controlled by a separate metering rod and butterfly valve, allowing for fine-tuning adjustments and optimized engine response.
This Quadrajet Carburetor features a full-radius bowl design, which provides a larger fuel reservoir and smoother fuel flow for better atomization. Additionally, the design reduces fuel flow restriction, ensuring consistent performance under various engine loads. The idle mixture screws are adjustable, making it simpler to fine-tune the engine idle for optimal operation.
The carburetor also includes a mechanical secondary system. This system enriches the air/fuel mixture during aggressive acceleration to provide increased torque and powerful engine response. This feature is perfect for racing applications, where extra power is essential.
The Delco GM 17057523 Quadrajet Carburetor is built with durable materials and high-quality components, ensuring long-lasting performance. It comes equipped with a baffled float bowl that prohibits fuel from splashing around during high RPMs, maintaining accurate fuel level readings for consistent performance. The carburetor body is made from corrosion-resistant materials, safeguarding against the harsh elements and prolonging its lifespan.
For easy installation, the carburetor comes with necessary hardware, including mounting gaskets and unique choke provision (as found on '77 Pontiac Trans Ams). The Quadrajet's bore size, 2.02 inches, is the same as the factory unit. However, the upgraded performance of this carburetor necessitates some modifications to the intake manifold and a proper tune to achieve the maximum potential for your 1977 Pontiac Trans Am 403 engine.
By installing the Delco GM 17057523 Quadrajet Barrel Carburetor in your 1977 Trans Am, you'll unlock the hidden power and responsiveness of your engine, elevating your driving experience and giving you an edge on the racetrack.
The Pontiac Rochester AC Delco 17057523 Quadrajet Barrel Carburetor is a popular choice for those restoring or upgrading a 1977 Trans Am equipped with a 403 engine. This carburetor boasts numerous benefits and drawbacks for performance, ease of use, and cost-effectiveness.
Pros:1. Improved throttle response: Quadrajet carburetors are known for their smooth, responsive throttle response, which can enhance the driving experience.
2. Fuel efficiency: Due to its efficient fuel mixture delivery system, a Quadrajet carburetor can lead to better fuel economy by minimizing fuel waste and optimizing engine performance.
3. Customizability: Quadrajet carburetors offer the opportunity for tuning and adjustments, allowing users to tailor the carburetor's performance to their specific engine and driving needs.
4. Availability: OEM and aftermarket options are widely available, making it relatively easy to find replacement parts or modifications.
5. Optimal power output: The Quadrajet's design delivers optimal power output for the 1977 Trans Am 403 engine, enabling improved acceleration and overall performance.
Cons:1. Complexity: Quadrajet carburetors have more components than some other types, requiring a more intricate setup and maintenance process.
2. Requires precise tuning: Properly setting up and tuning a Quadrajet can be a challenging process, which may require professional assistance for optimal performance.
3. Potential for leaks: Like with any carburetor, the Quadrajet can potentially develop leaks, which necessitates the need for regular maintenance and frequent inspections.
4. Fuel economy tradeoff: While the Quadrajet might provide better fuel efficiency overall, it may sacrifice some mileage during idle or cruising conditions due to its higher performance optimizations.
5. High initial cost: Quadrajet carburetors can be more expensive compared to other options on the market.
Conclusion:In conclusion, the Pontiac Rochester AC Delco 17057523 Quadrajet Barrel Carburetor can offer numerous benefits for a 1977 Trans Am 403 engine, such as improved throttle response, optimal power output, and customizability. On the downside, it comes with complexity, a higher initial cost, potential leaks, and potential fuel economy tradeoffs. Ultimately, the decision to buy a Quadrajet carburetor boils down to the desired performance gains, ease of maintenance, and budget of the potential buyer.
Recommendation:If you are looking for improved acceleration, impressive throttle response, and the ability to tune your engine specifically for optimum power output, then the Pontiac Rochester AC Delco 17057523 Quadrajet Barrel Carburetor would be a suitable choice. However, if you prioritize simplicity, lower maintenance requirements, and minimal hassle, alternative carburetor options might be more suitable for your needs. Be sure to research, compare, and weigh the pros and cons before making your decision.
Engine - carb is MISSING several pieces was modified to run a Dirt Street Stock on the outer castings were milled off including all of choke all linkage stiff but moves OK Rough core for rebuilding very modified as shown. Modified Rochester Quadrajet 4 barrel carburetor stamped 17057523 originally from a 1977 Pontiac Trans Am with an Oldsmobile 403 cu.in.