877.352.5355 Contact Us Mon-Sat 10a-6p
DRIVEN BY CARE

Holly Sniper EFI Holley Quadrajet™, Black 550-868

Holly Sniper EFI Holley Quadrajet™, Black 550-868
Holly Sniper EFI Holley Quadrajet™, Black 550-868
$2,644.99 ea
NEWARRIVING SOONEstimated Ship Date 03/15/2024 (If Ordered Today)27 Available from HOLLEY PERFORMANCE PRODUCTS as of 02/22/2024
Model: 4008230
STANDARD
DELIVERY
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:
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Requires external fuel pressure regulator, such as: 12-886 or 12-879
  • Patent Pending
  • OEM Style Throttle Position Senser (TPS)/ and Idle Air Control (IAC) for years of dependable service.
  • A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13
  • Available in 3 Finishes - Classic Gold, Shiny and Black Ceramic
  • Universal Throttle and transmission kickdown bracket included
  • 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!
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
  • Brake Booster adapter included, if required
  • Integrated ignition timing control
  • Throttle body mounted ECU – no extra boxes to mount
  • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
  • Designed to deliver the signature Rochester Roar at Wide Open Throttle!
  • Supports up to 500hp with Four 100 Lb/Hr Injectors!
  • Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4
  • Fits most stock Rochester Quadrajet™ (Q-Jet) air cleaners
  • 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!
  • High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays.
  • 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

Downloads:

Download Name File Size
199r11367.pdf1.73MB
199r11324.pdf5.56MB

Videos:

Specifications:

CFM 715
Coast Guard Approved Yes
Emission Code 3
Finish Black
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
Part Type Carburetor
Product Type Sniper EFI Quadrajet
Proposition 65 www.P65Warnings.ca.gov
Throttle Bore 1.375 Primary / 2.00 Secondary
Transmission 700R4/200R4

Reviews:

Write a Review
* Your Name:
* Email (This will not be displayed)
* Rating:
Comments:

Ask a question about

Holly Sniper EFI Holley Quadrajet™, Black 550-868:
Mustang Depot 2024