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Description
Holley 550-871K Holley Sniper EFI Stealth 4150 Master Kit - Black FinishOverview: The Sniper Stealth 4150 EFI system from Holley features 4, 100LB HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of fuel map self learning and ignition timing control, improving idle stability, drivability, and wide open throttle horsepower! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM
Overview:
The Sniper Stealth 4150 EFI system from Holley features 4, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications. Part # 34-42 is required for a bolt-in installation.
Features:
- Bolt on 4150 Flange Carburetor Replacement
- Throttle body mounted ECU - no extra boxes to mount
- Supports up to 650hp with Four 100 Lb/Hr Injectors!
- All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.
- Timed spark part for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor.
- Air entry is machined to fit most stock style air cleaners with air cleaner locator provisions.
- Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
- External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886.
- Integrated ignition timing control
- 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 real-time Fuel Map Learn!
- OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service.
- Included clamp-on oxygen sensor kit for 2.25" exhaust ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
- Available in 3 finishes: Shiny, Black and coming soon, Gold
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley Sniper EFI |
|---|---|
| CFM | 870 |
| Emission Code | 3 |
| Finish | Black |
| Flange Style | 4150 |
| Fuel Pressure | 58.5 PSI |
| Height | 3.28" |
| Injector Size | 100 lb/hr @ 58.5 PSI |
| Inlet / Outlet Size | 3/4-16 Female O-Ring (AN 8) |
| MAP Sensor | 2Bar |
| Max Horsepower Rating | 650 Naturally Aspirated |
| Model | 4150 EFI Conversion Throttle Body |
| Product Type | Sniper Stealth EFI |
| Transmission | 700R4/200R4 |
| Transmission | Ford C4/C6 |
| Transmission | TH350 |
| Warning | California Proposition 65 |
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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4.8 ★★★★★
Based on 753 reviews
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Product Reviews
★★★★★ 5
Eye-Opening and Heart-Expanding
Format: Paperback
I am incredibly grateful for this book. It gave me profound insight into essential truths of Christian faith and doctrine by allowing me to see them through a radically different lens than my internal lens. Plus, it opened me up enormously to the experience of black Americans who express the pain and challenge of life in our country thoughtfully and provocatively. I left this reading chastened, desiring more conversation, moved to listen better, and hoping to live differently.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 9, 2023
★★★★★ 5
Best book I've read in last 10 years!
Format: Paperback
I'm absolutely blown away. I finished the book this morning. I have been recommending it to anyone and everyone who asks me "So, what you reading?". I'm known for having a book stack a mile high. I ran out of my first yellow highlighter! Profound stuff. The subtitle, How African American Literature Can Make Our Faith More Whole and Just, doesn't do the book justice. It is soooo much more. I highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2023
★★★★★ 5
A must read
Format: Paperback
This is an amazing book! The author takes the reader through several works of black literature, expounding on how each work shows us deep things about theology and faith.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
★★★★★ 5
Countee Cullen chapter
Format: Paperback
This book is a great read. I’m not even sure how to encapsulate my thoughts on it, but let me say the chapter, “Jesus,” on the poetry of Countee Cullen is brilliant and a masterclass on discipleship, suffering, identity, projecting onto Jesus. This one chapter could literally be a course in Christian discipleship handling multiple aspects of the life of faith. I feel like I’m not doing the chapter, the book, or Claude Atcho justice here, but I deeply recommend this book and urge readers to really sit with the Cullen chapter and all its implications. What a gift Claude Atcho has given us here!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2025
★★★★★ 5
An exceptional, stunningly beautiful, and greatly needed book
Format: Paperback
Have you ever finished a book so heavy with truth and beauty and goodness that you don’t know how to sum it up? That’s where I am upon completing Claude Atcho’s Reading Black Books: How African American Literature Can Make Our Faith More Whole and Just. I’m the sort who marks up books with notes, underlining, and asterisks. Pages with ideas I want to return to get a folded corner. For this book? More pages are folded than not and a flip through the book reveals copious amounts of fuchsia markings.
Full disclosure: Claude is a writer friend; we’ve chatted about faith, books, work, writing, and podcasting. I’ve been eagerly awaiting the release of his book, knowing it would be fantastic. You might think I was biased in that assumption, considering our previous connection, considering I received an ARC from Brazos Press.
What I found from the first pages was even more than expected: my friend as pastor, shepherd, prophet, counselor, guide. Claude features 10 key creative African American works to cast a vision for human flourishing rooted in the power and love of God found in Jesus Christ. Just listen to this moving excerpt: “Healing is found in the constant individual and communal turn toward the tender mercies of God, who calls us to a theological remembrance: to locate our history in his, to make sense of our memory in his memory, to process our wounds in his wounds” (126). This book is beautifully written, theologically robust, and desperately needed. I cannot recommend this book highly enough. It is stunning.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2022
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