HOLLEY Barrel Carb R-6477

( Brand: Holley ), ( Manufacturer Part Number: 6477 ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Material: Aluminum ), ( Features: Down Draft ), ( Universal Fitment: Yes ), ( Country/region Of Manufacture: United States )

Review HOLLEY Two Barrel Carb For Chevy

The Holley 6477 R-6477 Double Pumper Barrel Carburetor is a high-performance solution for your Chevy muscle car, designed to deliver precise fuel mixture for optimal engine performance. This carburetor is part of Holley's Classic Series, which combines traditional design with modern technology.

The R-6477 features a 650 CFM (cubic feet per minute) capacity, making it suitable for larger engines or high-performance applications. It comes with a 750-micron main jet and a 180-micron power jet, which can be adjusted to meet the specific fuel requirements of your engine. The secondary circuit is designed to provide an enriched fuel mixture during acceleration for improved throttle response and power.

The barrels are made of billet aluminum for durability and weight savings, and they are finished with a high-gloss black coating for a stylish appearance. Each barrel features a 1-inch venturi throat and a 4-inch bore for optimal airflow and fuel mixture preparation. The carburetor comes with an adjustable power valve, which can be fine-tuned to optimize idle quality and prevent surging.

The Holley 6477 R-6477 Double Pumper Barrel Carburetor is designed to be easy to install and adjust, with a straightforward configuration and clear markings on the bowls and jets. It includes a 1-7/8-inch primary float, a 2-inch secondary float, and a set of gaskets and hardware for a hassle-free installation. The carburetor is also compatible with Holley's electronic fuel pressure regulator and various vacuum and accessory brackets for added versatility.

In summary, the Holley 6477 R-6477 Double Pumper Barrel Carburetor is a high-performance, easy-to-install, and adjustable solution for your Chevy muscle car. With its durable construction, precise fuel mixture control, and classic design, it is an excellent choice for enthusiasts and performance enthusiasts looking to enhance their engine's power and drivability.

The Holley 6477 R-6477 barrel carburetor is a popular choice among Chevy enthusiasts for its performance and versatility. However, like any other automotive component, it comes with its advantages and disadvantages.

1. Performance: The Holley 6477 R-6477 carburetor offers excellent fuel delivery and air/fuel mixture for improved engine performance. It is suitable for high-performance applications and can handle large amounts of airflow.

2. Adjustability: This carburetor comes with multiple adjustment options for fine-tuning the air/fuel mixture and fuel delivery. It allows for easy adjustments to meet the specific requirements of different engines and driving conditions.

3. Durability: Holley carburetors are known for their durability and reliability. The R-6477 model is no exception, with heavy-duty components and a robust design that can withstand the demands of high-performance applications.

1. Complexity: The Holley 6477 R-6477 carburetor is a complex component that requires a certain level of knowledge and experience to install and tune properly. It is not a simple bolt-on upgrade and may require professional assistance.

2. Cost: Compared to some other carburetors on the market, the Holley 6477 R-6477 model can be quite expensive. The cost of the carburetor itself, as well as the potential cost of professional installation and tuning, may be a significant investment for some enthusiasts.

3. Maintenance: Like any other carburetor, the Holley 6477 R-6477 model requires regular maintenance to ensure optimal performance. This includes regular cleaning, adjustments, and replacement of worn-out parts.

The Holley 6477 R-6477 carburetor is a high-performance component that offers excellent fuel delivery and adjustability for Chevy applications. However, it comes with its complexities, cost, and maintenance requirements that may make it a less desirable option for some enthusiasts. Ultimately, the decision to purchase this carburetor depends on your specific needs, experience level, and budget.

If you are looking for a high-performance carburetor for your Chevy and have the necessary knowledge and experience to install and tune it properly, the Holley 6477 R-6477 model could be an excellent choice. However, if you are new to carburetors or have a limited budget, you may want to consider a less complex and more affordable option. It is always recommended to thoroughly research and consult with professionals before making a purchase.

Details:

Will need to be gone through before its run. Holley R-6477 Two Barrel Carb for Chevy 331157-GE R-6477-3562 Used carb that has been sitting in a box decades. If you purchase outside the lower 48, expect to pay out of pocket for shipping.

part #: 6477 prices

• $17.99-$120.00

specifications carbcoon:

• for makes: Chevy
• brand: Holley
• mpn: 6477
• choke type: Mechanical
• type: Carburetor
• material: Aluminum
• features: Down Draft
• universal fitment: Yes
• country/region of manufacture: United States

general carbcoon:

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

payments carbcoon:

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

returns carbcoon:

• policy: No Returns

shipping carbcoon:

• cost: $14.24
• service: USPS Ground Advantage
• carrier: USPS
• class: Standard
• type: Calculated
• transit: 5-11 Days

seller carbcoon:

• city: Grass Valley, California
• rating: 96.4%
• # reviews: 26

offer carbcoon:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• best offers: True
• started: July 13, 2025

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