ROCHESTER 17056257 Quadrajet Carburetor V-8

( Brand: Rochester ), ( Manufacturer Part Number: 17056257 ), ( Type: Carburetor ), ( Features: Quadrajet )

Review ROCHESTER Quadrajet Carburetor Oldsmobile V-8 #17056257 Parts fits 455 1976

The Rochester Quadrajet carburetor, model number 17056257, is a legendary fuel delivery system designed specifically for the 1976 Oldsmobile 455 V-8 engine. This carburetor is a four-barrel, throttle body design, which is known for its ability to deliver precise fuel mixtures for optimal engine performance.

The Quadrajet's unique design includes four separate barrels, each with its own float and jet for metering fuel. The carburetor utilizes a venturi design, which creates a vacuum that draws fuel from the floating bowls and forces it through the jets and into the engine. This design ensures an even fuel distribution to each cylinder, resulting in smooth and powerful engine operation.

The Quadrajet's fuel mixture is controlled by the carburetor's idle mixture screws and main jet needles. These adjustments can be made to fine-tune the carburetor for different driving conditions and altitudes. Additionally, the Quadrajet features an automatic choke system, which ensures easy starting in cold weather conditions.

The Quadrajet carburetor is also equipped with a secondary metering system, which provides additional fuel to the engine during acceleration. This system helps to ensure that the engine receives the correct fuel mixture for maximum power and torque, especially during heavy acceleration.

The Rochester 17056257 Quadrajet carburetor is a high-performance fuel delivery system that is known for its durability and reliability. Its unique design and adjustability make it an excellent choice for the 1976 Oldsmobile 455 V-8 engine. Whether you're cruising down the highway or putting the pedal to the metal, the Quadrajet carburetor is up to the challenge, delivering the precise fuel mixture your engine needs for optimal performance.

This carburetor is also designed with ease of installation in mind, featuring a compact design that fits neatly into the engine bay. The Quadrajet is a must-have for Oldsmobile enthusiasts who want to restore their classic V-8 engines to their former glory or for those looking to upgrade their performance. With its legendary reputation and proven track record, the Rochester 17056257 Quadrajet carburetor is an essential component for any Oldsmobile 455 V-8 restoration or performance project.

The Rochester Quadrajet carburetor, model number 17056257, was originally designed for use on 1976 Oldsmobile 455 V-8 engines. Here are some pros and cons of buying this carburetor for your Oldsmobile:

1. Widely Available: The Rochester Quadrajet carburetor is a common aftermarket choice for Oldsmobile V-8 engines, making it readily available from various sources such as auto parts stores, online retailers, and rebuilders.

2. Factory Replacement: This carburetor is a factory replacement for 1976 Oldsmobile 455 V-8 engines, ensuring proper fitment and compatibility.

3. Relatively Easy to Rebuild: The Quadrajet carburetor is known for being easier to rebuild compared to other carburetors due to its simple design, making it a good option for DIY enthusiasts.

4. Fuel Efficiency: The Quadrajet carburetor is known for providing good fuel economy, which can help save money on fuel costs.

5. Smooth Idle and Throttle Response: The Quadrajet carburetor is known for providing a smooth idle and responsive throttle, contributing to improved driving experience.

1. Potential for Fuel Leaks: Old Quadrajet carburetors, especially those that have not been properly maintained, may develop fuel leaks. This can be a concern for those who want to avoid the potential mess and safety hazard.

2. Requires Proper Tuning: The Quadrajet carburetor requires proper tuning to ensure optimal performance, which can be a challenge for some enthusiasts.

3. Performance Limitations: While the Quadrajet carburetor is a good performer for stock engines, it may not deliver the same level of performance as more modern fuel injection systems or high-performance carburetors.

4. Potential for Carburetor Icing: In cold weather conditions, the Quadrajet carburetor may experience icing, which can affect performance and require additional maintenance.

The Rochester Quadrajet carburetor, model number 17056257, is a widely available and factory replacement option for 1976 Oldsmobile 455 V-8 engines. Its ease of rebuild, fuel efficiency, smooth idle, and throttle response make it an attractive choice for many enthusiasts. However, it's important to be aware of potential issues such as fuel leaks, the need for proper tuning, performance limitations, and carburetor icing. Ultimately, the decision to buy this carburetor depends on your personal preferences, budget, and level of expertise.

If you're looking for a relatively easy-to-install and cost-effective solution for your Oldsmobile 455 V-8, the Rochester Quadrajet carburetor is a good option to consider. However, if you're looking for maximum performance and don't mind spending more, you may want to explore other high-performance carburetors or fuel injection systems. Regardless of your choice, make sure to properly maintain your carburetor to ensure optimal performance and longevity.

Details:

You are buying on a Rochester Quadrajet four-barrel carburetor from 1976 Oldsmobile 455 V-8, stamped P/N #17056257. Shipping is FREE for USA only. It is used, nothing seized, some choke linkage missing, and the rear bowl vent broken off, see pictures.

part #: 17056257 prices

• $51.00-$249.00

specifications carbcoon:

• for models: 455
• for makes: Oldsmobile, Rochester
• for years: 1976
• brand: Rochester
• mpn: 17056257
• type: Carburetor
• features: Quadrajet

returns carbcoon:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

general carbcoon:

• condition: For parts or not working
• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors

seller carbcoon:

• city: Rumford, Rhode Island
• rating: 100.0%
• # reviews: 13166

payments carbcoon:

• other
• credit card: Visa
• wallet: Paypal

offer carbcoon:

• quantity: 1
• started: March 10, 2025
• options: Ship-to-home
• availability: In Stock
• sold: 0

shipping carbcoon:

• transit: 3-7 Days
• cost: $0.00
• service: Standard
• class: Standard
• type: Fixed

Rochester 17056257 Is Similar To:

• Chevrolet 7040134 1970s Chevelle 2 Barrel Rochester 350 400 Jet Carburetor (32.3% similar) 1970 S Rochester 2 jet my catalog shows fit 1970 350 400 its complete not frozen will probably need a rebuild shipping is $15.00 message NE with questions...(May 16th, 2024)
• Rochester 7043208 3042 4bbl Quadrajet Carburetor Qc 3042 Parts Or Repair (56.8% similar) Buy it!, because, while you are trying to carve a few pennies off of the price, someone else comes in and buys it at full price. I will decline any offer that requires me to pay the shipping. I have not opened it up, so do know what parts are or not in. This is a Rochester quadrajet 4BBL...(May 17th, 2024)
• Rochester Carter 7042206 1972 Chevy Gmc Truck 402 454 Carburetor Carb Quadrajet (37.5% similar) This is a Chevy 402/454 q-jet carb 7042206 the stamped number. It moves freely and looks pretty good but may need rebuilding from sitting...(May 17th, 2024)
• Rochester 17058110 Gm 2bbl Carburetor For 1978 Buick Oldsmobile Pontiac Chevy (57% similar) It should be gone through and cleaned. Used Rochester carb 17058110 in good condition...(May 17th, 2024)
• Rochester C1539 1974 Corvette Chevy 454 M t Carburetor 7044201 Nov 1973 Date Code (42.9% similar) Heres a rare Rochester 4BBL carb made for the 1974 corvette 454 manual transmission #7044201. Needs to be cleaned and rebuilt...(May 17th, 2024)
• Rochester 17059216 1979 Corvette Q-jet Quadrajet Carburetor Carb Gm (54.1% similar) Heres a used Rochester jet carburetor that needs rebuild. See pictures...(May 17th, 2024)
• Rochester 7004497 Oem 1 Barrel Carburetor Chevy Gmc B-style Inline 6 Cyl Engine 216 235 (41.7% similar) Shafts are not stuck. Looks to be complete. 1940S, early 1950S Rochester 1BBL carburetor. No noticeable damage, cracks or repairs. For rebuild or parts...(May 17th, 2024)
• Rochester 7024046 2300 Used 2 Barrel 2-jet Carburetor R2-2gc 1964 Buick 7026534 (53.8% similar) It has been designed to meet the OE/oem specifications and is compatible with a range of engines. The barrel count is 2 and it a non-modified, non-performance part. The carburetor is in good working order and comes with a manufacturer part number of 7026534, 7024046 2300. It has a front...(May 17th, 2024)
• Rochester 7029104 2-barrel Carburetor 2gv 1969 Chevrolet Chevy 327 350 396 400 (52.8% similar) Rochester 2 bbl my catalog shows fits Chevy model's 1969 327 350 396 400 missing the choke pull off rod not frozen selling as is $15.00 for shipping message me with any questions...(May 18th, 2024)
• Rochester 17082207 Q-jet Carburetor 305 350 Chevy 5.0 5.7 Olds (54.5% similar) It should be gone through and cleaned. Here is a used gm Rochester carb 17082207 from an 80S Chevy 307 or 350 5.0 5.7 olds...(May 18th, 2024)
• Pontiac 17080272 1980 80 Rochester Q-jet Carburetor 301 4.9l Trans Am Firebird (40.3% similar) It should be gone through and cleaned. Its in good condition Siri on but dirty and dusty...(May 18th, 2024)