HOLLEY 4781-2 Double Pump Cfm Carburetor Carb

( Brand: Holley ), ( Manufacturer Part Number: 4781-2 ), ( Choke Type: Manuel ), ( Type: 850 Cfm ), ( Features: Double Pumper ), ( Material: Alloy )

Review HOLLEY Double Pump Cfm Carburetor Carb fits 850

The Holley 4781-2 Double Pump 850 CFM Carburetor is a high-performance, dual-feed fuel delivery system designed for serious horsepower enthusiasts. This carburetor features a unique dual-pump design, which includes a primary pump for initial throttle opening and a secondary pump for high-RPM fuel requirements. This dual-pump system ensures optimal fuel delivery at all engine speeds, delivering a reliable and consistent power curve.

The Holley 4781-2 Double Pump 850 CFM Carburetor features a 1050 cfm primary and 850 cfm secondary pump, offering a total airflow capacity of 1900 cfm. This high-flow design allows for the delivery of an ample amount of fuel to the engine, ensuring maximum power and performance. The carburetor is equipped with a 1 3/8-inch primary and 1 1/2-inch secondary venturi, providing excellent atomization and fuel distribution.

The Holley 4781-2 Double Pump 850 CFM Carburetor features a robust construction, with a heavy-duty aluminum base and a cast aluminum bowl. The carburetor is equipped with a vacuum secondary system, which allows for precise fuel control and eliminates the need for a mechanical secondary. The carburetor also includes a built-in fuel pressure regulator, ensuring consistent fuel pressure at all engine speeds.

The Holley 4781-2 Double Pump 850 CFM Carburetor includes a high-quality, adjustable accelerator pump to provide precise fuel delivery during acceleration. The carburetor also features a secondary fuel pump with a built-in fuel filter, ensuring that only clean fuel reaches the engine. The carburetor is equipped with a 3/8-inch fuel inlet and outlet, making it easy to connect to your fuel system.

The Holley 4781-2 Double Pump 850 CFM Carburetor includes a high-quality, adjustable accelerator pump to provide precise fuel delivery during acceleration. The carburetor also features a secondary fuel pump with a built-in fuel filter, ensuring that only clean fuel reaches the engine. The carburetor is equipped with a 3/8-inch fuel inlet and outlet, making it easy to connect to your fuel system.

The Holley 4781-2 Double Pump 850 CFM Carburetor is easy to install, thanks to its bolt-on design and included mounting hardware. The carburetor is also equipped with a factory-installed air cleaner, making it a complete fuel delivery system. The carburetor is available in both 4-barrel and 2-barrel configurations, allowing you to choose the best fit for your specific engine application.

In conclusion, the Holley 4781-2 Double Pump 850 CFM Carburetor is a high-performance, dual-feed fuel delivery system that is perfect for serious horsepower enthusiasts. With its unique dual-pump design, high-flow construction, and advanced fuel control features, this carburetor delivers optimal fuel delivery at all engine speeds, ensuring maximum power and performance. Whether you're building a high-horsepower street machine or a race-ready hot rod, the Holley 4781-2 Double Pump 850 CFM Carburetor is the perfect choice for your fuel delivery needs.

1. High Flow Rate: With an 850 CFM (cubic feet per minute) flow rate, this carburetor is capable of delivering a significant amount of air and fuel to the engine, which can result in improved performance.

2. Double Pump Design: The double pump design allows for self-priming, eliminating the need for manual priming, and ensuring a consistent fuel supply to the engine, especially during cold starts.

3. Adjustable Vacuum Secondary: The adjustable vacuum secondary allows for fine-tuning the carburetor's performance, allowing you to optimize it for your specific engine and driving conditions.

4. Durable Construction: The Holley 4781-2 is made from high-quality materials, including a cast aluminum base and a billet aluminum primary, which can withstand the rigors of high-performance driving.

1. Cost: The Holley 4781-2 is a high-performance carburetor and comes with a correspondingly high price tag. It may not be within everyone's budget.

2. Installation Complexity: Installing a high-performance carburetor like the Holley 4781-2 can be a complex process, especially for those without experience. Professional installation may be required.

3. Requires Tuning: The adjustable nature of the Holley 4781-2 means that it requires tuning to get the best performance. This can be time-consuming and may require specialized tools and knowledge.

The Holley 4781-2 Double Pump 850 CFM Carburetor is a high-performance carburetor that can deliver significant improvements to an engine's performance. Its self-priming design, adjustable secondary, and durable construction make it a great choice for high-performance applications. However, its high cost, installation complexity, and requirement for tuning should be considered before making a purchase.

If you're looking for a high-performance carburetor and have the budget, the Holley 4781-2 is a great choice. However, if you're unsure about your ability to install and tune it, or if the cost is prohibitive, you may want to consider a less expensive, less complex carburetor that still offers good performance.

Details:

Needs a good cleaning. Everything is free and functional, floats needle valves work.

part #: 47812 prices

• $69.95-$295.00

specifications carbcoon:

• brand: Holley
• mpn: 4781-2
• choke type: Manuel
• type: 850 Cfm
• features: Double Pumper
• material: Alloy

general carbcoon:

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

payments carbcoon:

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

returns carbcoon:

• policy: No Returns

seller carbcoon:

• city: Grindstone, Pennsylvania
• # reviews: 135
• rating: 100.0%

shipping carbcoon:

• service: USPS Priority Mail
• class: Expedited
• type: Calculated
• transit: 6-10 Days
• cost: $64.15
• carrier: USPS

offer carbcoon:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0
• started: October 16, 2024
• best offers: True

Holley 4781-2 Is Similar To:

• Holley 4557 Ls6 L78 396 454 Carburetor 3967477-gg 1970 Chevelle Camaro Nova (45.2% similar) She was removed off of a running BBC motor but has been sitting for few months. It has not been tested and could possibly need work, labor, other parts/materials before use. May be shipped via ups, USPS or FedEx. The base plate was replaced. Selling an oem Holley list 4557 carburetor with...(May 17th, 2024)
• Holley 3886091 L-88 427 Corvette Carb 3886091an (39.6% similar) 427 L-88 corvette carburetor.holley 780 .part number 388-6091 an ,work great...(May 17th, 2024)
• Holley 10741 Teapot 4000 4-barrel Carburetor 1074-1 Core 1955 Ford Thunderbird 292 V-8 (43% similar) Ford part number EYCK-9510-T. Holley teapot 4000 4-BARREL carburetor, list number 1074-1. Please verify part number and pictures match your application. Linkage moves free. See pics for condition. Carb core appears to be mostly complete. Core for rebuilding or parts...(May 17th, 2024)
• Holley 1920 Vintage Glass Bowl Carburetor Hot Rod Gasser Carb Core Rebuild (43.9% similar) Good condition all linkage moves as it should great for rebuild...(May 17th, 2024)
• Holley 80531 Front Primary Center Hung Fuel Bowl Cathedral Dp Double Pumper Vac Sec (37.9% similar) Shipping is expensive no matter who the carrier and please understand this. This will need a good cleaning before use. For your consideration today is a used Holley front primary hung fuel bowl cathedral DP double pumper vac sec. It includes everything that is in the pictures!, my...(May 17th, 2024)
• Holley 06425c Two Barrel 650cfm Carburetor 6425 Imca Cheater Outlaw Racing Core (48.4% similar) Rare Holley two barrel carburetor, list number 6425 - carb is together with choke removed but horn intact metering block also in very nice physical condition, all linkage moves freely kick down arm as well good overall core condition has been sitting fryers it should base and bores look...(May 17th, 2024)
• Holley Ecz-9510-m Teapot 4000 4-barrel Carburetor 1161-2 Carb 1956 Ford Thunderbird 312 V-8 (38.6% similar) Carb core appears to be mostly complete. Core for rebuilding or parts. Holley teapot 4000 4-BARREL carburetor, list number 1161-2. Please verify part number and pictures match your application. See pics for condition. Ford part number CZ-9510-M. Linkage moves free...(May 18th, 2024)
• Holley R3310-1 Carburetor List-3310-1 780cfm H4-4150 4bbl Carb Ford Chevy Bop Mopar (37.9% similar) Used Holley 780 cfm 4BBL carburetor. Being sold for parts, restoration, core, rebuild. Looks to be complete, no cracks, being sold as/is. LIST-3310-1, date, 0653...(May 18th, 2024)
• Holley 3972121 4555 Carb 1970 Lt1 Corvette And Camaro Z28 4 Speed 904 Oct 1969 Restored (33.8% similar) Part #: Holley 3972121 for sale...(May 18th, 2024)
• Holley 3969898-gr 4492 Carb 9b2 Dec 69 1970 454 Ls6 396 L78 Automatic Chevelle Camaro Nova (31.7% similar) Part #: Holley 3969898-GR for sale...(May 18th, 2024)
• Holley 1850-3 Carburetor 4 Barrel 600 Cfm Vac Secondary Nice Rebuildable Core (41.3% similar) Many of the carbs have been rebuilt and were sitting in plastic bags, but I no history on what was done to them. It is missing a part of the electric choke. Very nice and clean vintage. Spectre fuel system accessory carburetor. The rest of it looks complete. 600 cfm vac...(May 19th, 2024)