1. USED Car/Truck Carburetors Items
  2. sku: 10786660424202731
  3. HOLLEY R47815

HOLLEY Tuned Cfm Carburetor Vdl Double Pumper 4-BARREL 4150 R4781-5

fits model: 850.

R4781-5 Holley R47815 Tuned 850 Cfm 4-barrel Carburetor 4150 Vdl Systems Double Pumper

( Brand: Holley ), ( Manufacturer Part Number: R47815 ), ( Type: Carburetor ), ( Mounting Flange Type: Square Bore ), ( Material: Aluminum ), ( Universal Fitment: Yes )

Review HOLLEY Tuned Cfm 4-barrel Carburetor 4150 Vdl Systems Double Pumper fits 850

The Holley R47815 850 CFM 4-barrel carburetor, specifically the 4150 VDL R4781-5 double pumper model, is a high-performance fuel delivery system designed for serious automotive enthusiasts. This carburetor represents a perfect blend of classic styling and modern technology, making it an excellent choice for hot rods, muscle cars, and other high-performance applications.

This Holley carburetor boasts an 850 CFM (cubic feet per minute) airflow capacity, which is ideal for engines producing between 500 and 700 horsepower. The 4150 base plate, coupled with the VDL (Velocity Damping System) design, ensures optimal fuel distribution and atomization for a more efficient combustion process.

The R47815 is a double pumper carburetor, meaning it features two fuel pumps one primary and one secondary. This setup provides a more consistent fuel delivery across the entire RPM range, resulting in smoother idle and improved throttle response. The primary pump is engaged at idle, while the secondary pump takes over at higher RPMs for increased fuel demand.

The Holley R47815 is also outfitted with a number of other desirable features. These include:

1. Holley's Vacuum Secondary System (VSS), which provides vacuum-controlled secondary fuel metering for improved engine performance and drivability.

2. A precise metering block design, allowing for easy jet and emulsion tube adjustments to optimize the carburetor for specific engine configurations.

3. A built-in fuel pressure regulator, ensuring a consistent fuel pressure at the carburetor inlet for optimal performance.

4. An adjustable power valve, which helps to maintain proper fuel pressure and improve engine response.

5. A removable floats bowl, making it easier to access the internal components for maintenance and tuning.

Additionally, the R47815 comes with a variety of factory-installed features, such as a fuel pressure relief valve, an adjustable idle mixture screw, and a power valve adjustment screw. These features make this carburetor a versatile and customizable solution for a wide range of performance applications.

In summary, the Holley R47815 850 CFM 4-barrel carburetor, with its VDL design and double pumper setup, is a high-performance, feature-rich fuel delivery system that is well-suited for serious automotive enthusiasts seeking improved engine performance, drivability, and throttle response.

Holley R47815 is a tuned 850 CFM 4-barrel carburetor from the 4150 VDL R4781-5 double pumper series. This carburetor is widely used in hot rods and performance applications due to its high flow rate and tunability. Let's discuss the pros and cons of buying a Holley R47815 carburetor.

Pros:

1. High Flow Rate: With an 850 CFM flow rate, this carburetor can provide sufficient fuel to high-performance engines.

2. Tunability: Holley carburetors are known for their ease of tuning. The R47815 model comes with a tuned jet kit, making it easier to get the engine running optimally.

3. Double Pumper Design: The double pumper design helps maintain consistent fuel pressure, improving idle stability and overall performance.

4. Wide Compatibility: This carburetor can be used on a wide range of applications, including small block Chevy, Ford, and Chrysler engines.

5. High-Quality Construction: Holley carburetors are made from high-quality materials, ensuring durability and longevity.

Cons:

1. Complexity: Compared to a single-barrel carburetor, a 4-barrel carburetor like the R47815 is more complex. This may require more time and expertise to install and tune properly.

2. Cost: Holley carburetors are generally more expensive than their single-barrel counterparts, which may be a consideration for some buyers.

3. Fuel Economy: A high-performance carburetor like the R47815 may not be the best choice for those looking for optimal fuel economy.

In conclusion, the Holley R47815 850 CFM 4-barrel carburetor is an excellent choice for those seeking high performance and tunability in their hot rod or performance application. Its double pumper design ensures consistent fuel pressure, and its high flow rate can provide sufficient fuel to high-performance engines. However, its complexity and cost may be a consideration for some buyers. Ultimately, if you are looking for a high-performance carburetor for your hot rod or race car, the Holley R47815 is a worthy investment.

Details:

The Tuned Holley 850 cfm 4-Barrel Carburetor 4150 VDL Systems R4781-5 Double Pumper is a high-performance carburetor designed for air and fuel delivery in car truck engines. Carb Number Carb model Number cfm Renew Kit Trick Kit Needle Seat Primary Main Jet Secondary Jet or Plate Power Valve Pump Nozzle Size Primary Secondary Spring Color Primary Bowl Gasket Primary Metering Block Gasket Secondary Fuel Bowl Secondary Bowl Throttle Body Shaft Diameter Secondary Throttle Bore Primary Throttle Secondary, R 037-48537-933 2-78125-65 15 0.0310.031108-83-2108-89-2108-83-2108-83-2134-103134-104n/a1-9/161-9/161-3/41-3/4. With four barrels for increased airflow and performance, this Holley carburetor is a top choice those looking to enhance the fuel delivery system of their vehicle.

part #: r47815 prices

  • $66.49-$700.00

specifications carbcoon:

  • for models: 850
  • brand: Holley
  • mpn: R47815
  • type: Carburetor
  • mounting flange type: Square Bore
  • material: Aluminum
  • universal fitment: Yes

seller carbcoon:

  • # reviews: 1452
  • rating: 99.7%
  • city: Mobile, Alabama

returns carbcoon:

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

offer carbcoon:

  • availability: In Stock
  • options: Ship-to-home
  • quantity: 1
  • started: April 6, 2026
  • sold: 0

payments carbcoon:

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

general carbcoon:

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

shipping carbcoon:

  • type: Calculated
  • cost: $16.28
  • carrier: USPS
  • service: USPS Ground Advantage
  • class: Standard
  • transit: 4-11 Days
for models: 850, type: carburetor, mounting flange type: square bore, universal fitment: yes,
category: auto parts > car truck parts accessories > air fuel delivery > carburetors, material: aluminum, sku: 10786660424202731,

Holley R47815 Is Similar To:

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2 offers $66.49–$700.00 USD
  • Offer #1: $66.49 price + $0.00 shipping estimate = $66.49* total. This Kit has 3 Power Valves. Holley Carburetor Rebuild Kit Genuine Holley Parts.FREE SHIPPING
  • Offer #2: $700.00 price + $0.00 shipping estimate = $700.00* total.FREE SHIPPING

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