SKU: 22972379158

Holley Sniper EFI 550-869 Holley Sniper EFI Quadrajet

Sale price$809.98 Regular price$899.98
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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Description

Holley Sniper EFI 550-869 Holley Sniper EFI QuadrajetOverview: Are you tired of rebuilding the 50+ year old Rochester Quadrajet (Q Jet) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? Introducing Sniper EFI Quadrajet. The first bolt on spread bore electronic fuel injected throttle body system that does not require any additional adapters, sealing plates, or intake manifold swaps! The Sniper EFI Rochester Quadrajet (Q Jet) system retains the same great features as the 4150 Sniper EFI

Overview:

Are you tired of rebuilding the 50+ year old Rochester™ Quadrajet® (Q-Jet™) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? Introducing Sniper EFI Quadrajet™. The first bolt-on spread bore electronic fuel injected throttle body system that does not require any additional adapters, sealing plates, or intake manifold swaps! The Sniper EFI Rochester Quadrajet™ (Q-Jet) system retains the same great features as the 4150 Sniper EFI version such as; four 100lb/hr Injectors, built-in timing control, a 3.5" full-color touchscreen, and much more! The throttle body will support up to 500 horsepower naturally aspirated. In addition to all of these great tried and true features, the Sniper EFI Rochester Quadrajet™ (Q-Jet) system will fit most stock air cleaners and offers multiple fuel inlet configurations that allow for a stock appearing installation!

Features:

  • Available in 3 Finishes - Classic Gold, Shiny and Black Ceramic
  • Designed to deliver the signature Rochester Roar at Wide Open Throttle!
  • Throttle body mounted ECU - no extra boxes to mount
  • Supports up to 500hp with Four 100 Lb/Hr Injectors!
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Integrated ignition timing control
  • Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4
  • Fits most stock Rochester Quadrajet (Q-Jet) air cleaners
  • Brake Booster adapter included, if required
  • Universal Throttle and transmission kickdown bracket included
  • High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays.
  • Simple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
  • Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI!
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
  • OEM Style Throttle Position Senser (TPS)/ and Idle Air Control (IAC) for years of dependable service.
  • Included clamp-on oxygen sensor kit ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
  • Requires external fuel pressure regulator, such as: 12-886 or 12-879
  • Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance. Making Sniper EFI the perfect choice for carburetor to marine fuel injection conversions!
  • A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13
  • Patent Pending

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Brand Holley Sniper EFI
CFM 715
Coast Guard Approved Yes
Emission Code 3
Finish Classic Gold
Flange Style Spreadbore
Fuel Pressure 58.5 PSI
Height 3.28"
Injector Size 100 lb/hr @ 58.5 PSI
Inlet / Outlet Size 9/16-18 Female O-Ring (AN 6)
MAP Sensor 2Bar
Max Horsepower Rating 500 Naturally Aspirated
Product Type Sniper 4BBL TBI Kits
Throttle Bore 1.375 Primary / 2.00 Secondary
Transmission 700R4/200R4
Warning California Proposition 65
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 22972379158

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Clyde D Triplett
Lexington, US
★★★★★ 5
Very Nice Comforter
Size: King
So far, very happy with my purchase, (King size comforter). Just received yesterday, unpackaged and put inside my duvet, then realized the instructions recommend you place it in the dryer, (as it comes vacuum packed). I really didn’t feel like messing with the duvet again and yet the comforter still fluffed out very nice. The outer shell is very soft, it has decorative piping around the edges and the filling is evenly spread out throughout all the pockets. One of the nicest features are the tabs, located on all four corners and in the middle of each side, (to tie to the inside of your duvet, if your duvet has the little inner strings) great for keeping the comforter in place.
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Reviewed in the United States on May 24, 2026
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Emily K. O'Neill
Lake Worth, US
★★★★★ 4
Just one con…
Size: Palatial King
Loved everything about this duvet: great quality, true-to-size, 8 ties and REALLY big & fluffy. It was just way too warm for us, even during the winter. Wish we could find a duvet this full that was cooler.
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Reviewed in the United States on April 6, 2026
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Joyce
Massapequa, US
★★★★★ 5
Comforter
Size: King
This is the most comfortable comforter I have ever owned! Boutique hotel quality! This comforter is not too warm, yet it keeps us warm and is very lightweight, which I love! We sleep very soundly with this comforter! I highly recommend!
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Reviewed in the United States on May 29, 2026
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Cassi Romney
Waukegan, US
★★★★★ 5
MASSIVE SIZE
Size: California King
I cannot tell you how soft this is but it's like a cloud made of cotton candy! It's so soft and fluffy! In arizona its too hot for a blanket like this most of the time but this is also really cooling. Its been great, I dont have a big washing machine so i take it to the laundromat and its still in really good shape. Its clean and looks so soft and beautiful
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Reviewed in the United States on May 9, 2026
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Alicia Sorban
Carnegie, US
★★★★★ 5
Lovely to and super warm but ordered too large
Size: Super King
A beautifully made, lovely, hugely fluffy, super warm feather quilt...that was unfortunately ordered as wayyy too oversized and too warm a down weight for our high but standard profile king bed. You'll literally get lost in the thing, so floooofy. I plan on ordering a smaller and lighter version from the same company. Be aware that repackaging this requires a vacuum bag, and we were charged a significant amount for the return as it had been opened, so order carefully.
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