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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
4.8 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Super super glittery!
Color: Fairy-Diamond
Super, super glittery! I ended up returning because, believe it or not, it was too glittery for me! But it's a good product :)
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Reviewed in the United States on April 19, 2026
★★★★★ 4
Decent for the price.
Color: Rainy-Rainbow
The color is pretty, the bottle seems to be working well for now. The atomizer pump is so cute and makes me feel super dainty and girly! I love the xtra refill, the funnel and two glitter glues for makeup looks. The glue is good enough to hold the glitter but not too sticky where it leaves a nasty residue. So that’s a plus and it’s easy to wash off.
However, the glitter does not adhere or stay in place on dry skin. I’m assuming it’ll be great to spray on the body if you have some type of oil in for it to adhere too but haven’t tried it yet. Will update next weekend.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
10/10
Color: Iridescent-Violet
I love this! It has a lot of glitter and it last a long time! It sprays smoothly and looks so good!
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Love it.
Color: Rainy-Rainbow
This glitter is gorgeous on.
Really easy to apply, sprays evenly and a good amount at once. It wasn’t a nightmare to deal with either clinging to things it fell/rubbed onto which I was pleasantly surprised by. It cleans up very well.
A little goes a long way too, so it should last a while. It stayed on my body fairly well throughout the night too.
I have really sensitive skin so I was hesitant to even get glitter at all. I tried body glitter 2 years ago but it was a liquid spray kind and I broke out in an intense rash all over.
I also have a chronic hive condition so my skin flares up from products due to sensitivity.
I did not have ANY issues with this glitter.
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Reviewed in the United States on November 19, 2025
★★★★★ 5
Absolutely Stunning Glitter with Thoughtful Packaging! | Rainy Rainbow
Color: Rainy-Rainbow, Color: Rainy-Rainbow
This glitter is breathtaking! The sparkles catch the light very beautifully — it has a mesmerizing, holographic shine that’s perfect for adding extra pizzazz to any project.
When it arrived, I was pleasantly surprised at how well it was packaged. The box was securely sealed, and everything inside was perfectly intact—minor spills, no mess.
A heads up on opening the entire thing: the round container’s Lid is screwed on VERY LOOSELY. Be mindful when you’re unboxing. Screw it back on very tightly.
The spray nozzle on this bottle gives such a beautiful, antique perfume vibe—it really elevates the whole experience. It sprays the glitter perfectly, so it’s easy to get a flawless application every time. (Don’t forget to keep the little nozzle cover to protect it!) Honestly, I wouldn’t apply it any other way than with the bottle—it just makes everything so much smoother. 🤷🏻♀️
If you happen to go overboard, just grab the closest shirt and wipe off any excess. No point in wasting any of this stuff! :)
Oh, & those two little gloss bottles are actually glue, which is perfect for keeping everything right where you need it to be.
Here’s a little pro tip: I used the same tape that kept the box sealed to reseal the lid of the round glitter container until I’m ready to use it.
Worked like a charm! 😎 It’s a small detail, but it will keep everything neat, and prevent unwanted glitter explosions in the future.
If you’re a sparkle lover, you’ll adore this glitter—it’s as pretty in person as it looks online!
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Reviewed in the United States on October 16, 2024