HOLLEY 6R5533B Double Pumper Carburetor Comp Gas

( Brand: Holley ), ( Manufacturer Part Number: 6R5533B ), ( Type: Carburetor )

Review HOLLEY Double Pumper Carburetor Bbc Sbc Chevy Ford Mopar Super Comp Gas fits 850

The Holley 6R5533B 850 Double Pumper Carburetor is a high-performance fuel delivery system designed for big-block Chevy, Ford, and Mopar applications using gasoline. This carburetor is part of Holley's Serpentech series, which combines the proven performance of Holley's classic designs with modern technology for improved driveability and power.

The 850 Double Pumper Carburetor features a 3300 CFM venturi, which allows for a substantial fuel flow rate. The double pumper design utilizes two high-performance diaphragm pumps, each capable of delivering 425 CFM at 0.050 inch lift. This design provides excellent vacuum sensitivity and fuel delivery consistency, making it an excellent choice for high-performance applications.

The carburetor body is constructed from aluminum for light weight and excellent heat dissipation. It also features a billet aluminum base plate for added strength and durability. The base plate includes provisions for mounting an electric choke and air conditioning system, as well as a large fuel bowl for improved fuel capacity and atomization.

The 6R5533B comes with a 650 CFM secondary venturi and a 750 CFM primary venturi, which can be easily interchanged to fine-tune the carburetor's performance for different engine conditions. The carburetor is also equipped with Holley's Advanced Air Mass Sensor (AAMS) system, which allows for electronic fuel level sensors and electronic fuel pressure regulation.

The 850 Double Pumper Carburetor's bowl-mounted accelerator pumps are adjustable for both height and length, allowing for precise tuning of the carburetor's response to throttle input. The carburetor also includes adjustable power valves, which can be used to fine-tune the fuel delivery characteristics for different engine configurations.

The 6R5533B is EFI-compatible and can be used in conjunction with Holley's EFI systems for even greater fuel management capabilities. The carburetor comes with a full set of gaskets, hardware, and instructions for a hassle-free installation process.

In summary, the Holley 6R5533B 850 Double Pumper Carburetor is a high-performance, versatile fuel delivery system suitable for big-block Chevy, Ford, and Mopar applications using gasoline. Its advanced features, including double pumper design, adjustable accelerator pumps, and AAMS system, make it a top choice for enthusiasts seeking optimal power and driveability from their classic muscle cars.

The Holley 650 Double Pumper Carburetor (part number 533B) is a popular choice for building high-performance engines, particularly for BBW (Big Block Willys) Chevrolet, Ford, and Mopar applications. This carburetor comes with a base gasket for use with Comp Cams gas distributors. Here are some pros and cons that might help you make an informed decision about purchasing this carburetor.

1. High-performance design: The Holley 650 Double Pumper Carburetor is known for its high-performance capabilities. It can handle large fuel demands and provide excellent throttle response.

2. Double pumper design: This carburetor features a double-pumper design, which means it has two fuel pumps, allowing for more fuel to be delivered to the engine for better power and torque.

3. Adjustable features: The Holley 650 Double Pumper Carburetor is highly adjustable, which allows users to fine-tune the carburetor to their specific engine setup and driving conditions.

4. High-quality construction: Holley is a well-known brand in the automotive aftermarket industry, and this carburetor is built to last. It features heavy-duty components and robust construction.

5. Wide compatibility: This carburetor can be used with a variety of engines, making it a versatile choice for many applications.

1. Complexity: The Holley 650 Double Pumper Carburetor is a complex piece of equipment. Installing and tuning it can be time-consuming and requires a good understanding of carburetion and engine performance.

2. Cost: This carburetor is not inexpensive. The cost of the carburetor itself, as well as the required installation parts and tuning tools, can add up quickly.

3. Maintenance: Like any high-performance carburetor, the Holley 650 Double Pumper requires regular maintenance to keep it running at its best. This can include cleaning or replacing various components, such as the fuel bowls, jets, and floats.

The Holley 650 Double Pumper Carburetor is an excellent choice for those seeking high-performance capabilities and the ability to fine-tune their engine setup. Its robust construction, versatility, and adjustability make it a popular choice among performance enthusiasts. However, its complexity, cost, and maintenance requirements are important considerations that should be taken into account before making a purchase. Ultimately, if you are willing to invest the time, money, and effort into installing and tuning this carburetor, it can provide excellent power and torque gains for your BBW Chevrolet, Ford, or Mopar application.

If you're serious about building a high-performance engine and are willing to invest the time, money, and effort into installing and tuning a carburetor, then the Holley 650 Double Pumper Carburetor (part number 533B) is an excellent choice. It offers robust construction, versatility, and adjustability that can help you get the most out of your engine. However, if you're looking for a simpler or more cost-effective solution, you may want to consider other options, such as a single-plane intake and throttle body fuel injection system. Ultimately, the best choice depends on your specific needs, budget, and level of expertise.

Details:

Used Holley 4150 850 cfm . New gaskets included. Disassembled and cleaned when removed. Worked great, no problems.

Prepared by Bill Mitchell.

part #: 6r5533b prices

• $261.25-$850.00

specifications carbcoon:

• for models: 850
• for makes: Chevy, Ford, Mopar
• brand: Holley
• mpn: 6r5533b
• type: Carburetor

general carbcoon:

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

seller carbcoon:

• city: Danville, Indiana
• # reviews: 807
• rating: 100.0%

payments carbcoon:

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

returns carbcoon:

• policy: No Returns

offer carbcoon:

• started: July 17, 2025
• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock
• best offers: True

shipping carbcoon:

• transit: 5-11 Days
• type: Fixed
• carrier: USPS
• service: USPS Priority Mail Small Flat Rate Box
• class: Expedited
• cost: $19.50

Holley 6R5533B Is Similar To:

• Holley 4557 Ls6 L78 396 454 Carburetor 3967477-gg 1970 Chevelle Camaro Nova (43% 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 10741 Teapot 4000 4-barrel Carburetor 1074-1 Core 1955 Ford Thunderbird 292 V-8 (45% 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 (38.2% 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 (36.1% 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 (45.7% 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 (43.7% 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 (45.8% 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 1850-3 Carburetor 4 Barrel 600 Cfm Vac Secondary Nice Rebuildable Core (45% 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)
• Holley 4360 Economaster 450 Cfm Carburetor 7454 Quadrajet Replacement Chevrolet (43.2% similar) List number is 7454. For sale is one 1 used Holley 4360 series 450 cfm spread bore carburetor. Verify it will fit your application prior to purchasing. Please look closely at all the pictures for condition and details. The carb is in poor shape and for parts only...(May 19th, 2024)
• Holley List-7001 4165 Spreadbore Carburetor 650cfm Core Or Parts (43% similar) This model is a spread bore design double pumper with two accelerator pumps. You are buying on a Holley model 4165 four-barrel carburetor, stamped p/n # LIST-7001, date code 1610, rated at 650 cfm ...(May 19th, 2024)
• Holley 4779 4150 4779 750cfm Competition Drag Racing Double Pumper Carburetor (43.8% similar) Holley 4150/4779/750C FM, competition drag racing double pumper carburetor. Is totally rebuilt, is in like new condition, and ready to install. This is an actual photo of the carb...(May 19th, 2024)