ROCHESTER Quadrajet Carburetor 1708020.

( Manufacturer Part Number: 1708020 ), ( Items Included: Gasket ), ( Material: Aluminum ), ( Vintage Part: Yes ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Mounting Flange Type: Spread Bore ), ( Manufacturer Warranty: 1 Year ), ( Features: Quadrajet ), ( Performance Part: No )

Review ROCHESTER Quadrajet Carburetor

The Rochester Quadjet carburetor, model number 1708020, is a legendary automotive component known for its exceptional performance and durability. This quad-barrel carburetor was a popular choice for high-performance applications in the late 1960s and 1970s.

The 1708020 Quadjet features four separate barrels, each with its throttle shaft and needle valve, which allows for a more efficient fuel-air mixture. The unique design of the Quadjet enables a smoother idle and improved acceleration, making it an excellent choice for both street and racing applications.

This carburetor boasts a robust construction with a cast-aluminum body and heavy-duty heat shield. The Quadjet's meticulously engineered design ensures accurate fuel metering, even under extreme conditions. The carburetor comes with four 1.5-inch venturi tubes, which are slightly larger than those found in standard two-barrel carburetors.

The Rochester Quadjet 1708020 includes a mechanical secondary system, which provides an additional fuel supply during wide-open throttle situations. This system helps ensure optimal engine performance during high-RPM operation, making the Quadjet an ideal choice for high-performance applications.

The Quadjet carburetor comes with a factory-set primary jet kit, including jets for various fuel types and conditions. It also includes a secondary jet kit, allowing for easy tuning to achieve the perfect fuel-air mixture for your specific engine setup.

Installing the Rochester Quadjet 1708020 carburetor requires some expertise, as it is a more complex component compared to standard carburetors. However, with the right knowledge and tools, you can enjoy the unparalleled performance and power that this legendary carburetor delivers.

In summary, the Rochester Quadjet carburetor, model number 1708020, is a high-performance, quad-barrel carburetor that offers improved idle stability, enhanced acceleration, and optimal fuel metering for both street and racing applications. Its robust construction, mechanical secondary system, and easy tunability make it a favorite among car enthusiasts and restorers.

Pros and Cons of Buying a Rochester 1708020 Quadrajet Carburetor

The Rochester 1708020 Quadrajet Carburetor is a popular choice among classic car enthusiasts and restoration projects. This carburetor is known for its efficient fuel delivery and smooth operation. However, like any other automotive component, it has its advantages and disadvantages.

1. Fuel Efficiency: The Quadrajet carburetor is known for its excellent fuel efficiency. It mixes fuel and air evenly, ensuring a clean combustion process that saves fuel.

2. Power Delivery: This carburetor provides smooth and consistent power delivery throughout the RPM range. It is ideal for large V8 engines and high-performance applications.

3. Easy Installation: The Rochester 1708020 Quadrajet Carburetor is relatively easy to install, making it a popular choice among DIY enthusiasts. The carburetor comes with all necessary hardware and detailed instructions.

4. Durability: The Quadrajet carburetor is known for its durability. It has a robust design and can handle the demands of high-performance applications.

5. Availability: The Rochester Quadrajet carburetor is widely available, making it easy to find replacement parts and accessories.

1. Complex Design: The Quadrajet carburetor has a complex design, which can make it difficult to tune and adjust. It requires a certain level of expertise and experience to get the best performance.

2. High Cost: The Rochester 1708020 Quadrajet Carburetor is more expensive than some other carburetor options. However, its fuel efficiency, power delivery, and durability make it a worthwhile investment for many.

3. Fuel Economy: While the Quadrajet carburetor is fuel-efficient, it may not be as fuel-efficient as modern fuel injection systems. This can be a concern for those looking to save on fuel costs.

4. Maintenance: The Quadrajet carburetor requires regular maintenance to ensure optimal performance. This includes regular cleaning, adjusting, and tuning.

The Rochester 1708020 Quadrajet Carburetor is a high-performance carburetor that offers excellent fuel efficiency, smooth power delivery, and durability. However, its complex design and high cost may be a concern for some. Ultimately, the decision to buy a Quadrajet carburetor depends on your specific needs, expertise, and budget. If you are looking for a high-performance carburetor for a classic car or high-performance application, the Quadrajet carburetor is a worthwhile investment. If you are looking for a more affordable or easier-to-maintain option, there may be other carburetor options that better suit your needs.

If you have the expertise and budget to work with a complex carburetor and want high-performance fuel delivery and smooth power delivery, the Rochester 1708020 Quadrajet Carburetor is an excellent choice. However, if you are looking for a more affordable or easier-to-maintain option, consider exploring other carburetor options or fuel injection systems. It's important to carefully consider your specific needs, expertise, and budget before making a decision.

Details:

It has a new rebuild kit installed and comes with upper lower gaskets.It will fit most Chevy model's.

part #: 1708020 prices

• $127.99-$395.00

specifications carbcoon:

• for makes: Rochester
• mpn: 1708020
• items included: Gasket
• material: Aluminum
• vintage part: Yes
• choke type: Mechanical
• type: Carburetor
• mounting flange type: Spread Bore
• manufacturer warranty: 1 Year
• features: Quadrajet
• performance part: No

payments carbcoon:

• credit card: Visa
• other
• wallet: Apple-pay

seller carbcoon:

• rating: 100.0%
• city: Cocoa Beach, Florida
• # reviews: 1159

returns carbcoon:

• policy: No Returns

offer carbcoon:

• options: Ship-to-home
• sold: 0
• started: January 31, 2026
• best offers: True
• quantity: 1
• availability: In Stock

general carbcoon:

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

shipping carbcoon:

• carrier: USPS
• cost: $28.00
• type: Fixed
• class: Standard
• transit: 4-9 Days
• service: USPS Ground Advantage

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