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  2. sku: 10842055272172881
  3. HOLLEY QFT SHP850BLK

HOLLEY/QFT SHP850BLK Double Pumper Roots Blower

Shp850blk Holley/qft Pair Of 850 Double Pumper Roots Type Blower Lightweight Aluminum 2

( Brand: Holley/qft ), ( Manufacturer Part Number: SHP850BLK ), ( Part Type: Aluminum Blower ), ( Choke Type: Chokeless ), ( Material: Aluminum ), ( Features: Square Bore 4150 Flange ), ( Surface Finish: Polished Aluminum ), ( Country Of Origin: United States ), ( Performance Part: Yes )

Review HOLLEY/QFT Pair Of Double Pumper Roots Type Blower Lightweight Aluminum fits 850

The Holley/QFT SHP850BLK 850 Double Pumper Roots Blower is a high-performance, fuel-injected, positive displacement blower designed for use in automotive applications. This powerful blower is engineered to deliver exceptional airflow and consistency, making it an ideal choice for serious hot rodders, race car enthusiasts, and high-performance engine builders.

The 850 Double Pumper configuration features two individually controlled pumps, allowing for independent control of each blower output. This design provides superior vacuum and boost capability, enabling optimized engine performance under various conditions. The pumps are driven by a robust gear system with heavy-duty gears and precision-machined components, ensuring reliable operation and longevity.

The roots blower itself is constructed from durable materials, including cast aluminum housing and a billet aluminum impeller. The impeller is designed with a large, high-efficiency cross-section that maximizes airflow while minimizing power consumption. The blower also features a high-flow, 6-blade fan and a large, efficient inlet manifold.

The Holley/QFT SHP850BLK 850 Double Pumper Roots Blower is compatible with a wide range of fuel systems and can be used with both gasoline and methanol fuel. It includes a high-pressure fuel pump and an integrated fuel pressure regulator, allowing for easy installation and operation. Additionally, the blower is equipped with a built-in vacuum pump, which can be used to power various accessories, such as vacuum gauges and fuel pressure regulators.

The blower comes with comprehensive wiring harnesses, making installation straightforward and hassle-free. It also includes a vacuum gauge and a manifold pressure gauge, allowing for easy monitoring of vacuum and boost levels. The blower is backed by Holley's industry-leading warranty, providing peace of mind and confidence in your purchase.

In summary, the Holley/QFT SHP850BLK 850 Double Pumper Roots Blower is a high-performance, fuel-injected, positive displacement blower that delivers exceptional airflow and consistency. Its robust design, independent pump control, and compatibility with various fuel systems make it an excellent choice for serious automotive enthusiasts seeking superior engine performance.

The Holley/QFT SHP850BLK 850 Double Pumper Roots Blower is a popular choice for automotive enthusiasts looking to enhance the performance of their engine. Here are some pros and cons that may help you make an informed decision about purchasing this product:

Pros:

1. Increased Horsepower: This roots blower can provide a significant boost in horsepower, making it a popular choice for those looking to improve the performance of their engine.

2. Dual Vacuum: The double pumper design of this roots blower provides a more consistent and stable vacuum, which can lead to better fuel economy and improved engine performance.

3. Easy Installation: According to many customer reviews, this roots blower is relatively easy to install, making it a good option for DIY enthusiasts.

4. Durable Construction: The Holley/QFT SHP850BLK 850 Double Pumper Roots Blower is made with high-quality materials and is known for its durability, making it a good investment for the long term.

5. Improved Air Flow: By increasing the amount of air flowing into the engine, this roots blower can help improve engine response, throttle sensitivity, and overall performance.

Cons:

1. Cost: The Holley/QFT SHP850BLK 850 Double Pumper Roots Blower is a more expensive option compared to some other roots blowers on the market.

2. Noise Level: Some customers have reported that this roots blower is louder than other options, which may be a concern for those who value a quieter ride.

3. Fuel Consumption: While this roots blower can improve fuel economy in some cases, it can also lead to increased fuel consumption due to the additional horsepower and air flow.

4. Maintenance: Roots blowers require regular maintenance, including occasional cleaning and oil changes, which can be time-consuming and add to the overall cost of ownership.

Conclusion:

The Holley/QFT SHP850BLK 850 Double Pumper Roots Blower is a high-performance option for those looking to enhance the power and response of their engine. While it comes with some drawbacks, such as a higher cost and increased noise level, the benefits, including improved horsepower, consistent vacuum, and durable construction, make it a worthwhile investment for many automotive enthusiasts. Ultimately, the decision to purchase this roots blower depends on your specific needs, budget, and preferences. If you're looking for a high-performance option that can provide a significant boost to your engine, the Holley/QFT SHP850BLK 850 Double Pumper Roots Blower is definitely worth considering.

Details:

Teflon coated throttle shafts. Externally referenced power valve. No more fumbling with sight plugs. They have been assembled with high-flow .110 needle seat assemblies, 30cc pumps, #31 squirts pink pump cams, non-stick bowl and block gaskets, nylon screw gaskets.

The jetting is 76 up front with a 4.5 Hg high-flow power valve, and 85 in the rear valve circuit blocked. Heavy duty black anodized billet aluminum base plate that is much stronger than a stock cast Holley piece. They are NOT for Blow-Through Supercharger or Turbocharger use. These ARE for Draw-Through, Roots Supercharger use only.

The mounting gaskets are included as shown. Heres a list of features;. The 3/16 vacuum port on the passenger side of main body must be connected to a source BELOW blower base manifold using common tubing. Lightweight aluminum racing fuel bowls with sight windows that will not yellow.

This is NOT the cheap Chinese knock-off junk sold under brand name Pro Comp. Thanks, Steve. They will easily support 1000-1400 horsepower on a draw-through Roots blower. Holley polished lightweight aluminum HP main body with.

This is one of my custom builds. Performance black anodized billet aluminum metering blocks that are custom calibrated for maximum performance.

part #: shp850blk prices

  • $719.00-$1549.00

specifications carbcoon:

  • brand: Holley/qft
  • mpn: Shp850blk
  • part type: Aluminum Blower
  • choke type: Chokeless
  • material: Aluminum
  • features: Square Bore 4150 Flange
  • surface finish: Polished Aluminum
  • country of origin: United States
  • performance part: Yes

general carbcoon:

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

seller carbcoon:

  • rating: 100.0%
  • city: Jeannette, Pennsylvania
  • # reviews: 3499

payments carbcoon:

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

returns carbcoon:

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

offer carbcoon:

  • availability: In Stock
  • quantity: 2
  • options: Ship-to-home
  • sold: 0
  • started: April 12, 2026

shipping carbcoon:

  • cost: $42.65
  • carrier: USPS
  • transit: 4-8 Days
  • type: Calculated
  • class: Standard
  • service: USPS Ground Advantage
part type: aluminum blower, choke type: chokeless, features: square bore 4150 flange, surface finish: polished aluminum, country of origin: united states, performance part: yes,
category: auto parts > car truck parts accessories > air fuel delivery > carburetors, material: aluminum, sku: 10842055272172881,

Holley/qft SHP850BLK Is Similar To:

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5 offers $719.00–$1549.00 USD
  • Offer #1: $719.00 price + $32.45 shipping estimate = $751.45* total. It will flow 835 cfm and is dyno-proven to 600+ horsepower depending upon engine setup. This is one of my custom builds consisting of a Holley aluminum, contoured, HP style main body for maximum flow and enhanced booster signal.+$32.45 shipping
  • Offer #2: $1549.00 price + $45.80 shipping estimate = $1594.80* total. 030" high speed bleeds installed. This is one of my custom builds.+$45.80 shipping
  • Offer #3: $789.00 price + $32.45 shipping estimate = $821.45* total. It will easily support 550-750 horsepower on a draw-through Roots blower.+$32.45 shipping
  • Offer #4: $759.00 price + $32.45 shipping estimate = $791.45* total. It will flow 850 cfm due to it's advanced, contoured design, but will have the manners and response of a 750, and is dyno-proven to 600 horsepower depending upon engine setup.+$32.45 shipping
  • Offer #5: $1519.00 price + $45.80 shipping estimate = $1564.80* total. 072" idle and They will easily support 1000-1400+ horsepower on a draw-through Roots blower.+$45.80 shipping

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