ROCHESTER 17058553 Trans Am High Performance Quadrajet Carburetor

( Brand: Rochester ), ( Manufacturer Part Number: 17058553 ), ( Choke Type: Electric ), ( Type: Carburetor ), ( Features: Quadrajet )

Review ROCHESTER Pontiac Trans Am High Performance Quadrajet Carburetor Rebuilt fits 1978

The Rochester 17058553 Quadrajet carburetor is a high-performance carburetor originally designed for use in the 1978 Pontiac Trans Am. This carburetor was part of the famous "Quadrajet" series, which gained popularity for its ability to deliver excellent fuel efficiency and powerful engine performance.

The 17058553 Quadrajet carburetor features a four-barrel configuration with separate venturis for each barrel. This design allows for more air and fuel mixture to enter the engine, resulting in increased horsepower and torque. The carburetor employs a hydro-connector system that utilizes a central accelerator pump to provide additional fuel to the engine during heavy throttle demands, ensuring smooth and consistent power delivery.

The Quadrajets infamous vacuum-secondry system also plays a significant role in their performance. This system uses a pair of vacuum-operated secondary throttle valves that can be adjusted independently for optimal fuel mixture and engine response. This feature is particularly beneficial for custom applications where specific tuning is required.

Additionally, the Rochester 17058553 Quadrajet carburetor comes equipped with several essential features to ensure proper engine function and longevity, including:

1. Emission control devices: The carburetor includes an EVAP system that meets the requirements of the Environmental Protection Agency (EPA) for that time.

2. Accelerator pump bypass: A built-in accelerator pump bypass ensures proper idle quality and reduced idle surging.

3. Adjustable secondary idle mixture control: This feature allows fine-tuning of the engine's idle mixture for improved performance and fuel efficiency.

4. Linkages and mounting hardware: The carburetor comes complete with all necessary linkages and mounting hardware for easy installation.

In summary, the Rochester 17058553 Quadrajet carburetor is a high-performance unit designed for the 1978 Pontiac Trans Am. Its four-barrel design, hydro-connector system, and vacuum-secondary features make it a legendary choice for muscle car enthusiasts seeking enhanced power and engine response. Additionally, its compliance with EPA emission standards and included features make it both street-legal and customizable for various performance applications.

Pros and Cons of Buying a Rochester 17058553 Quadrajet Carburetor for a 1978 Pontiac Trans Am

a. High Performance: The Rochester 1978 Pontiac Trans Am Quadrajet carburetor is a high-performance carburetor specifically designed for muscle cars. It delivers excellent air-fuel mixture for a better combustion process, enabling optimal engine performance.

b. Fuel Efficiency: Despite its high performance, the Quadrajet carburetor also promotes fuel efficiency. Its fine atomization and efficient air-fuel mixing improve the engine's ability to utilize fuel effectively, potentially reducing fuel consumption.

c. Easy Installation: Installation is relatively simple, as the Quadrajet carburetor is a direct replacement for the original 1978 Pontiac Trans Am carburetors. However, some tuning might be required for best results.

a. Complexity: The Quadrajet carburetor is a more complicated system with multiple jets and fine metering rods. This complexity comes with a higher learning curve for those opting to tune the carburetor themselves.

b. Performance Variations: Depending on the condition of the engine and other factors like intake manifold size and intake runner lengths, the performance gains may vary from one vehicle to another. Some users might experience differences in power delivery, especially during transient responses.

c. Cost: The Quadrajet carburetor is more expensive than a stock carburetor due to its high-performance features. Additionally, any potential tuning costs, service, or modifications required after installation should be factored into the overall cost.

The Rochester 1978 Pontiac Trans Am Quadrajet carburetor offers notable performance improvements and fuel efficiency, making it an excellent choice for those seeking high-performance upgrades for their muscle car. However, its complexity and potential variable performance results could be challenging factors to consider. If you're an experienced car enthusiast comfortable with tuning and diagnostics, the benefits might outweigh the challenges. Alternatively, a less complex high-performance carburetor or a fuel injection system could be looked into if easier installation and reliability are priorities.

We recommend considering your mechanical expertise, priorities (performance vs. simplicity), and budget when choosing to buy a Rochester 1978 Pontiac Trans Am Quadrajet carburetor. If you are an experienced car enthusiast looking for a significant performance upgrade, this carburetor could be a great option. For those looking for a more straightforward upgrade or prefer a simpler system, alternatives like high-performance carburetors with fewer complexities or fuel injection systems could be considered.

Details:

All new USA made parts include float, alcohol resistant accelerator pump, choke pull off, gaskets, seals, secondary cam, springs, fuel filter, gasket, and spring. This is a completely rebuilt 800 cfm Quadrajet carburetor 17058553 from 1978 Trans Am. Main well plugs sealed with our special epoxy All parts are coated to prevent oxidation Re calibrated for more performance from stock or mildly modified 403 Pontiac 400 engines. Bronze throttle shaft bushings installed to prevent vacuum leaks at idle.

Rebuilt by Thomas High Performance Quadrajet ts.

part #: 17058553 prices

• $399.99-$799.00

specifications carbcoon:

• for makes: Pontiac, Rochester
• for years: 1978
• brand: Rochester
• mpn: 17058553
• choke type: Electric
• type: Carburetor
• features: Quadrajet

general carbcoon:

• condition: Remanufactured
• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors

payments carbcoon:

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• policy: No Returns

offer carbcoon:

• sold: 0
• quantity: 1
• started: November 22, 2024
• options: Ship-to-home
• availability: In Stock
• best offers: True

shipping carbcoon:

• carrier: USPS
• transit: 4-11 Days
• type: Fixed
• cost: $26.00
• service: USPS Priority Mail
• class: Expedited

seller carbcoon:

• # reviews: 428
• rating: 98.8%
• city: Bulverde, Texas

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