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!
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
|Brand||Holley Sniper EFI|
|Coast Guard Approved||Yes|
|Fuel Pressure||58.5 PSI|
|Injector Size||100 lb/hr @ 58.5 PSI|
|Inlet / Outlet Size||9/16-18 Female O-Ring (AN 6)|
|Max Horsepower Rating||500 Naturally Aspirated|
|Product Type||Sniper 4BBL TBI Kits|
|Throttle Bore||1.375 Primary / 2.00 Secondary|
This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.
The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:
1965 and older U.S. manufactured California Certified vehicles
1967 and older U.S. manufactured Federally Certified vehicles
1967 and older Foreign manufactured vehicle
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
1966 and newer U.S. manufactured California Certified vehicles
1968 and newer U.S. manufactured Federally Certified vehicles
1968 and newer Foreign manufactured vehicle