HOLLEY 8520-8539 Carburetor Block Cfm 4150 4-BARREL 4777

( Brand: Holley ), ( Type: Double Pumper ), ( Manufacturer Part Number: 8520-8539 )

Review HOLLEY 4150 4-barrel Carburetor Primary Metering Block Cfm 8520 8539 fits 600

The Holley 8520-8539 4150 4-barrel carburetor, also known as the 4777 model, is a high-performance carburetor designed for applications seeking increased airflow and improved fuel delivery. This carburetor is part of Holley's famous Ultra series, which is renowned for its durability, consistency, and ease of tuning.

The 8520-8539 carburetor boasts a generous flow rate of 600 CFM at 0.050" lift, making it suitable for larger engines or those requiring higher airflow. This carburetor features a 4-barrel configuration, which allows for a more efficient intake of air and fuel into the engine.

The 4150 series carburetor body is constructed from high-quality aluminum, ensuring longevity and resistance to corrosion. It comes complete with a cast aluminum intake manifold, which is designed to provide excellent flow characteristics and even distribution of fuel among the four barrels.

The carburetor utilizes a Holley's proven vacuum secondary system, which is known for its smooth power delivery and excellent idle quality. It includes a built-in electric choke and an automatic transmission vacuum secondary, making it an excellent choice for applications with automatic transmissions.

The 8520-8539 carburetor comes with Holley's renowned adjustable needle and jet kit, allowing for precise tuning to meet the specific requirements of your engine. It is also equipped with a float bowl gasket kit, ensuring a proper seal and consistent fuel delivery.

The carburetor includes a 1-1/16" primary venturi and a 1-3/4" secondary venturi, which provide ample airflow for larger engines. It also features a 3/4" primary bore and a 1-1/8" secondary bore, ensuring efficient fuel delivery to the engine.

The Holley 8520-8539 4150 4-barrel carburetor is an excellent choice for enthusiasts seeking a high-performance, reliable, and easily tunable carburetor for their project. It delivers impressive power and torque while maintaining excellent idle quality and ease of installation.

The Holley 8520-8539 4150 4-barrel 4777 carburetor is a popular choice among automotive enthusiasts for its high performance and reliability. Here are some pros and cons to help you make an informed decision about purchasing this carburetor:

1. High Flow Rate: This carburetor has a flow rate of 4777 CFM, making it suitable for high-performance applications.

2. Adjustability: It offers a high degree of adjustability, allowing users to fine-tune the fuel mixture to optimize engine performance.

3. Durable Construction: The carburetor is made of high-quality materials and is known for its durability and longevity.

4. Improved Air/Fuel Mixture: This carburetor provides a more consistent and efficient air/fuel mixture, resulting in improved engine performance and fuel economy.

5. Classic Design: The 4-barrel design of this carburetor gives your engine a classic look.

1. Complexity: The high degree of adjustability can be a double-edged sword. It requires a good understanding of carburetor tuning to get the best results.

2. Cost: Compared to other carburetors in the market, this Holley carburetor is on the higher end of the price spectrum.

3. Installation: Installing this carburetor can be a challenging task, requiring specialized tools and expertise.

The Holley 8520-8539 4150 4-barrel 4777 carburetor is an excellent choice for high-performance applications where a high degree of adjustability is desired. Its durable construction, efficient air/fuel mixture, and classic design make it a popular choice among automotive enthusiasts. However, its complexity and high cost may make it a less attractive option for those with limited budgets or expertise. Ultimately, if you're looking for a high-performance carburetor that offers a great deal of adjustability and a classic look, this Holley carburetor is worth considering.

If you're in the market for a high-performance carburetor and have the budget and expertise to install and tune it, the Holley 8520-8539 4150 4-barrel 4777 carburetor is an excellent choice. However, if you're looking for a more affordable or easier-to-install option, there are other carburetors in the market that may better suit your needs. It's essential to weigh the pros and cons carefully and consider your specific application before making a purchase.

part # 85208539 prices

• $129.99-$799.95

specifications carbcaddie:

• for models: 600
• brand: Holley
• type: Double Pumper
• manufacturer part number: 8520-8539

payments carbcaddie:

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

general carbcaddie:

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

returns carbcaddie:

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

seller carbcaddie:

• rating: 100.0%
• # reviews: 31592

shipping carbcaddie:

• type: Calculated
• carrier: USPS
• class: Standard
• service: USPS Ground Advantage
• cost: $0.00
• transit: 4-10 Days

offer carbcaddie:

• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: October 18, 2025
• sold: 0
• best offers: True

Holley 8520-8539 Is Similar To:

• Ford D0of-9510-n 1970 Cobra Jet 429 Scj Manual 4 Speed Holley Carburetor List 4627 As Is (27.4% similar) $223.99–$2672.99. (August 23rd, 2024)
• Holley 12r-5204b Carburetor Throttle Base Plate #0559 (48.6% similar) $30.00–$190.68. (August 23rd, 2024)
• Holley 12r-4251b Carburetor Throttle Base Plate #0574 (44.3% similar) $24.95–$35.00. (August 23rd, 2024)
• Holley 3887686 2 Bbl 500 Cfm Marine Carburetor Volvo Penta 4.3l For Parts Or Rebuild (37.4% similar) $159.99–$400.00. (August 23rd, 2024)
• Holley 36-181 Carburetor Metering Jet 2 Of Each Size Contact Prior Ordering (43.2% similar) $34.88–$96.83. (August 24th, 2024)
• Holley 5583-4519 1968 1969 Metering Plate 5583 For 4053 4346 Chevelle Camaro 396 427 Copo (35.2% similar) $400.00–$1500.00. (August 24th, 2024)
• Holley 8485-1947 Primary Front Metering Block 18502 600 Vacuum Secondary Carburetor (51.8% similar) $20.00–$199.00. (August 24th, 2024)
• Holley 7115 Primary Front Metering Block 6510 Spread Bore 650 Vacuum Dp (50.6% similar) $1195.00–$1950.00. (August 24th, 2024)
• Holley 37-119 Model 4160 4 Barrel 600 Cfm Carb Rebuild Kit (41.4% similar) $48.15–$68.98. (August 25th, 2024)
• Holley 37-1536 Carburetor Renew Kit 4160 (44.1% similar) $199.95–$211.06. (August 25th, 2024)
• Holley 80457-2 List Carburetor 600cfm 4bbl 4160 Main Body Only With New Gasket (38.8% similar) $8.35–$11.25. (August 26th, 2024)