ROCHESTER 17055463 Gm Quadrajet Carburetor R4-M4MC 77-79

( Manufacturer Part Number: 17055463 ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Features: Quadrajet ), ( Country/region Of Manufacture: United States ), ( Vintage Part: Yes )

Review ROCHESTER Oem Genuine Gm Quadrajet Carburetor 77-79 Bop

Rochester Quadrajet Carburetor R4-M4MC for 1977-1979 GM Applications

The Rochester Quadrajet Carburetor R4-M4MC is an iconic fuel delivery system designed for specific 1977-1979 GM applications. This carburetor boasts advanced features that contribute to excellent fuel economy, improved engine performance, and smooth idle. Its rich history and consistently impressive results make it a favorite among automotive enthusiasts and professionals.

The Rochester Quadrajet R4-M4MC Carburetor is a four-barrel, mechanical fuel injection carburetor with many upgrades. It features four separate circular bore throats, each supplied with fuel by four eccentrically situated individual idle mixture circuits. The Quadrajet's unique design includes a smooth transition from idle circuits to the main jets, ensuring exceptional mid-range and wide power band performance.

Designed specifically for late-70s GM applications from the Dodge A12, Chevrolet Nova, Montana, and others, the R4-M4MC carburetor features smooth-running circular bore throats, which reduce the adverse effects of throttle changeovers. Its high fuel capacity prevents carburetor surge, enhancing fuel economy and engine performance. The air/fuel mixture within the Rochester Quadrajet carburetor is meticulously controlled by the large, high-velocity venturi, reducing fuel intake velocity for optimum combustion efficiency.

Constructed with rigorous attention to detail and precision engineering, this Rochester Quadrajet R4-M4MC 77-79 carburetor is built to last. It features vacuum operated secondary and float bowl drains, providing easy maintenance, and operates on a fuel pressure range of 5 to 10 psi. The carburetor comes with all necessary hardware included for an easy installation.

The R4-M4MC Quadrajet's addition of a secondary metering rod enhances overall engine performance by improving throttle response and stability, ensuring smooth idle quality and quicker acceleration. This results in fewer fuel deliveries to the engine during idle and improved fuel efficiency.

The Rochester Quadrajet R4-M4MC carburetor for 1977-1979 GM applications offers durable performance and high-quality fuel management for muscles cars and performance vehicles. With its sleek design, smooth operation, and ease of maintenance, the Quadrajet establishes itself as a trusted carburetor for those who prioritize excellent fuel economy, improved engine performance, and smooth idle quality.

The Rochester Quadjet Carburetor R4-M4MC, specifically for 1977-1979 GM vehicles, presents both advantages and disadvantages for potential buyers. Here's a clear and concise summary of the key pros and cons:

1. Excellent Fuel Efficiency: The Quadjet carburetor is renowned for its ability to provide good fuel economy due to its efficient fuel delivery system. It offers an ideal fuel-air mixture, allowing the engine to run more efficiently, and ultimately reducing fuel consumption.

2. Reliability: The Quadjet carburetor is known for its robust design and long-lasting performance. It has fewer moving parts compared to some other carburetors, which translates to fewer potential problems and less maintenance requirement.

3. Smoother Idle: This carburetor offers a smoother idle, particularly in comparison to some older carburetors. This can lead to improved drivability and overall driving experience.

4. Better Cold-Start Performance: The Quadjet carburetor's vacuum secondaries contribute to better cold-start performance as the secondary circuits only open when more vacuum is present in the intake manifold, which happens when the engine is cold.

5. Affordability: The Rochester Quadjet carburetor is often a more affordable alternative to newer Electronic Fuel Injection (EFI) systems.

1. Fuel Mileage Variability: The Quadjet carburetor's fuel mileage can vary, as it depends on various factors like tune-up, altitude, and the vehicle's condition. Proper tuning is essential for optimal fuel efficiency.

2. Complex Tuning: Properly tuning a Quadjet carburetor can be a bit more time-consuming and complex compared to some other carburetors or modern EFI systems due to its multiple circuits.

3. Requires Regular Maintenance: Although the Quadjet carburetor is generally quite dependable, it still requires regular maintenance. Tasks like checking and adjusting the idle, ensuring proper fuel pressure, and keeping the float bowls clean are essential.

4. Cold-Running Issues: Depending on the specific application and weather conditions, the Quadjet carburetor may struggle a bit with cold-starting, despite the potential advantages over other carburetors in this regard.

5. Limited Adaptability: The Quadjet carburetor is less adaptable to modifications like altering the engine's performance characteristics or adding aftermarket add-ons to enhance power since it is a stock replacement part.

The Rochester Quadjet Carburetor R4-M4MC offers several noted benefits such as excellent fuel efficiency, smooth idle, good cold-start performance, reliability, and affordability. However, it also presents some challenges like fuel mileage variability, complex tuning, and a need for regular maintenance. Considering these pros and cons, this carburetor is a solid choice for those looking for a reliable, vintage-style carburetor that is more cost-effective compared to modern alternatives. Ultimately, the decision to purchase this carburetor depends on the individual's preferences, budget, and the intended use for their vehicle.

Details:

Needs rebuilt as shown condition.

part #: 17055463 prices

• $151.94-$495.00

specifications carbcoon:

• for makes: Rochester
• mpn: 17055463
• choke type: Mechanical
• type: Carburetor
• features: Quadrajet
• country/region of manufacture: United States
• vintage part: Yes

seller carbcoon:

• # reviews: 4452
• city: Tunnel Hill, Georgia
• rating: 99.8%

payments carbcoon:

• other
• wallet: Paypal
• credit card: Mastercard

offer carbcoon:

• options: Ship-to-home
• best offers: True
• sold: 0
• quantity: 1
• started: November 8, 2024
• availability: In Stock

general carbcoon:

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

returns carbcoon:

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

shipping carbcoon:

• cost: $26.70
• class: Standard
• type: Calculated
• carrier: USPS
• service: USPS Ground Advantage
• transit: 7-12 Days

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