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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:
- 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
4.3 ★★★★★
Based on 936 reviews
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Product Reviews
★★★★★ 5
A heartfelt, inspiring travelogue and meditation on living well
Format: Hardcover
Gordon Bernhardt's Buen Camino is a great accomplishment and a thoroughly enjoyable and thought-provoking read. Gordon opens his generous heart and extraordinary life to his readers and takes us with him, winding through a fascinating, historically informed and personally reflective commentary on the places and people of this ancient journey, his own life, memories, fears, triumphs, his personal commitment to service and growth in his life's work, and his connections with a remarkable community of fellow travelers on the road. The many photographs and questions for personal reflection at the end of each chapter were very effective. I was left with a desire to someday walk this path myself, and with a great appreciation and admiration for Gordon's persistence and positivity, both in making this journey and in his life and work.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2022
★★★★★ 5
A Heartfelt Story to Help Us Embrace Our Personal Journeys
Format: Kindle
“Buen Camino: What a Hike Through Spain Taught Me about Investing and Life” is a heartfelt story by author Gordon Bernhardt about his adventure traveling the Camino de Santiago beginning in France and ending in Spain. It is much more than a travelogue; it is a journey into life lessons both in Gordon’s personal life but also in his professional life. He includes deep revelations, humor, and puts readers in the setting of the pilgrimage through his words and images. I highly recommend this positive book reminding readers to enjoy our moments, appreciate our fellowship with other humans, and embrace our personal journeys.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 10, 2022
★★★★★ 5
An inspiring book on the uplifting qualities of the Camino pilgrimage
Format: Kindle, Format: Kindle
I highly recommend the book, “Buen Camino”, written by Gordon J. Bernhardt. It is focused on his 2018, 35-day pilgrimage/trek called the Camino de Santiago, or The Way of Saint James. The walk starts in the Pyrennes at St Jean Pied de Port in France and ends at the Santiago de Compostela Cathedral in northern Spain, then to the coastal towns of Muxia and Finisterre, 618 miles later.
Gordon shares what the pilgrimage meant to him as a way to reset his life, his interaction with the pilgrims along the way and the life lessons learned, how to handle unexpected problems and opportunities, and the importance of stepping away from our busy lives to help us focus on the true priorities. He blends his experience on the Camino with his profession in wealth management, and how helping/interacting with people in his personal, professional, and spiritual life has enriched his existence.
After reading this book, you will walk (pardon the pun) with a different view of what is truly important in your life.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
★★★★★ 5
This book provides incite on how to live a productive and rewarding life.
Format: Kindle
Gordon Bernhardt does an excellent job describing his adventure traveling the Camino de Santiago beginning in France and ending in Spain. He describes the impact it had on his personal and professional life and how experiences such as this can reward an individual in all aspects of their life. We are all on a journey through life and with the right perspective, which he delineates, can enhance and reward us and those around us. He encourages us to enjoy our journey and interactions with others. I recommend this book for anyone that wants to get the most out of life and benefit from lessons learned along the way.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 17, 2022
★★★★★ 5
It's a good read
Format: Paperback
It's a good read if your into financial investments and traveling. I paid twenty dollars and the next day Amazon showed me it for six dollars
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 12, 2025
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