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 16 - Jul 21

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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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4.7 ★★★★★
Based on 20 reviews
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M
Verified Purchase
ME!!
Bozeman, US
★★★★★ 5
C.G. Delivers Once Again -- Would Expect Nothing Less !!!
LOVE CHEM GUYS. these little wipes are awesome for quick cleaning. and to leave in the trunk of the car for UBER Driving. i love the VRP Hydro Spray - but you still need a rag to wipe it around. this solves that problem. just need 2 to clean the whole car !! and i have weather.tech floor mats front and back. these VPR Wipes make them look brand new in 5sec flat. and makes the black plastic car trim look sexy AF. NGL. but i dont like it on the leather seats. its a little too slippery for me. i like the OG Leather Conditioner for that. the cleaning wipes are really good too. can use them for any/every thing. one square will die out kinda quick, but it you use 2, it lasts a long azz time. (Clean Wipes AND VRP Wipes)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
D
Verified Purchase
Daymon
Charlottesville, US
★★★★★ 5
Cant wait to try this stuff!
Love chemical guys stuff. Cant wait to try this stuff!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
C
Verified Purchase
CG
Chelsea, US
★★★★★ 3
Alright
The interior cleaner are a little too dry for my liking- it feels like I need to use multiple wipes for the same area. I like the VPR for the plastics around the car (looks a little greasy), but I don’t think $20 is worth only 30 wipes each. I would rather buy the spray. Maybe I’m not using the wipes correctly but “shines like new” didn’t happened on the doors.
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Reviewed in the United States on January 5, 2026
J
Verified Purchase
Jen
Charlottesville, US
★★★★★ 5
Good quality
As expected
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Reviewed in the United States on February 20, 2026
J
Verified Purchase
Jason M. Babila
Lowell, US
★★★★★ 5
Excellent combo pack.
The cleaner & protectant and VRP protectant are my new go to cleaner and protectant wipes, I’ve been using another brand for 30+ years but it’s time to try other brands, I bought these to give it a try and it didn’t disappoint, it works very well, I work in very dusty environments trying to clean and protect the interior is an ongoing battle, so far this combo cleaner and protectant is doing its thing as expected, the cleaner wipes are not heavily soaked but with just the right amount without leaving any streaks and the same goes for the protectant wipes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2025

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