HOLLEY 8287474477 Cfm Double Pumper

( Brand: Holley ), ( Manufacturer Part Number: 8287474477 ), ( Type: Carburetor ), ( Items Included: Gasket ), ( Material: Aluminum ), ( Vintage Part: No ), ( Choke Type: Electric ), ( Mounting Flange Type: Square Bore ), ( Oe/oem Part Number: 626272 ), ( Manufacturer Warranty: 1 Year ), ( Features: Quadrajet ), ( Country/region Of Manufacture: United States ), ( Universal Fitment: Yes )

Review HOLLEY New Cfm Double Pumper fits 850

The Holley 8287474477 850 CFM Double Pumper is a high-performance carburetor suitable for racers and enthusiasts seeking superior fuel delivery and excellent throttle response. Its double pumper design duplicates the mechanical secondaries of a four-barrel carburetor, delivering greater volumetric efficiency and enhancing engine power and torque.

This Holley carburetor comes with a large 850 CFM primary venturi for efficient fuel delivery under normal driving conditions. The secondary venturis have a smaller diameter, which opens at a higher RPM, providing a more aggressive fuel curve for increased power during wide-open throttle situations. Furthermore, the double pumper design ensures a consistent fuel mixture, enabling more precise fuel metering and optimal combustion.

Constructed of robust materials, this double pumper carburetor features a heavier-duty casting and high-quality components, ensuring maximum durability and longevity. Its aluminum base measures 3.75 inches tall and has provisions for mounting accessories such as electrical pickups and vacuum devices. An oversized fuel bowl with a capacity of 1.5 quarts is designed to maintain a consistent fuel level during high-speed driving and tough conditions.

The Holley 8287474477 comes with a 6-inch, white-faced, graduated quad-stack speedometer-tachometer gauge as well as a manual choke mechanism for easy starting. It includes a primary float bowl gasket, secondary float bowls, float bowls gaskets, and new hardware for installation. Additionally, the included accelerator pump gasket is specifically designed for late-model Ford applications.

The Holley 850 CFM Double Pumper is transmission compatible, making it suitable for various applications, including C4, C6, C6R, and manual transmissions. To ensure a perfect fit, it's essential to verify the specific application's recommended jetting setup. Properly installing this carburetor requires the user's expertise in carburetor tuning.

This double pumper carburetor from Holley is also compatible with various fuel systems, including EFI, EFI standalone, and mechanical. Please ensure your intended application is compatible with this fuel system before purchasing. Overall, the Holley 8287474477 850 CFM Double Pumper is a high-performance, robust, and efficient solution for vehicles seeking improved fuel delivery, optimal combustion, and maximum power output.

The Holley 8287474477 850 CFM Double Pumper is a popular carburetor choice among performance car enthusiasts. This carburetor offers several benefits, but it's important to consider both its advantages and disadvantages before making a purchasing decision.

1. High CFM: With a flow rate of 850 CFM, this carburetor suits high-performance applications. It ensures adequate fuel supply for high-RPM conditions, resulting in improved engine performance.

2. Double Pumper Technology: The double pumper design provides better low-end throttle response and smoother idle. This technology allows for efficient fuelmixture preparation and delivery.

3. EAS fuel system: The Electronically Assisted Suction (EAS) system allows for easy tuning and improved idle quality. It helps maintain consistent fuel pressure under varying engine conditions.

4. Versatile: Suitable for both gasoline and E85 applications, making it a great option for those who switch fuel types occasionally.

1. Complex installation: Installing a Holley double pumper requires more time and expertise compared to a single plane or quadrajet carburetor.

2. Additional cost: This high-performance carburetor is priced higher than conventional carburetors due to its advanced features.

3. Limited compatibility: It may not be compatible with all vehicle applications, so verifying its compatibility with your specific vehicle is essential.

4. Requires careful tuning: Proper tuning is essential for peak performance. Accurate jetting and mixture adjustments are necessary.

In conclusion, the Holley 8287474477 850 CFM Double Pumper offers superior performance, versatility, and advanced tuning options for high-performance applications. However, it comes with a complex installation process, higher cost, limited compatibility, and the need for careful tuning. Consider these factors before making a decision based on your specific application requirements and expertise.

If you have the necessary skills and resources for installation and tuning, and you're looking for a high-performance carburetor, the Holley 8287474477 850 CFM Double Pumper is a worthy investment. If not, it may be better to explore other carburetor options that may be more suitable for your skill level and budget.

Details:

New royal 850 cfm double pumper carburetor.

part #: 8287474477 prices

• $119.69-$510.00

specifications carbcoon:

• for models: 850
• brand: Holley
• mpn: 8287474477
• type: Carburetor
• items included: Gasket
• material: Aluminum
• vintage part: No
• choke type: Electric
• mounting flange type: Square Bore
• oe/oem part number: 626272
• manufacturer warranty: 1 Year
• features: Quadrajet
• country/region of manufacture: United States
• universal fitment: Yes

seller carbcoon:

• city: Derby Line, Vermont
• rating: 0.0%
• # reviews: 0

returns carbcoon:

• policy: No Returns

general carbcoon:

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

shipping carbcoon:

• service: USPS Ground Advantage
• type: Calculated
• carrier: USPS
• transit: 4-10 Days
• class: Standard
• cost: $71.73

payments carbcoon:

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

offer carbcoon:

• availability: In Stock
• quantity: 1
• started: January 28, 2025
• sold: 0
• best offers: True
• options: Ship-to-home

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