Holley Sniper EFI Quadrajet™ - Classic Gold

Holley Sniper EFI Quadrajet™ - Classic Gold

Supports Up To 500HP - 3.5 in. Handheld Monitor - For Spreadbore Manifold - Return Fuel System

Overview
Are you tired of rebuilding the 50+ year old Rochester™ Quadrajet® (Q-Jet™) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? The Sniper EFI Quadrajet™ is here to help! The first bolt-on spreadbore 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! This 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! When it comes to converting to EFI, Sniper is the absolute best way to upgrade your car to fuel injection with just 4 simple connections required. Sniper is designed to be installed at home in your garage or driveway with limited tools and the support of Holley's comprehensive installation manual and videos. An afternoon in the garage and you will be enjoying improved engine performance, better MPG's and easier starting. After the simple installation it's time to let your Sniper begin the self-tuning process. Our user-friendly calibration wizard allows you to just answer a few questions about your engine and the system will begin self-tuning with no laptop required. You don't have to be a computer wiz or specialize in tuning to use a Sniper EFI system! Use the high resolution 3.5" full color touchscreen for tuning and gauge displays. The Sniper EFI Master Kit includes a complete fuel system consisting of; 20ft of 3/8" vapor guard fuel hose, fuel pump, filters, and all necessary hardware to return fuel into your tank. Additionally, you're getting a 4.9 wideband oxygen sensor with a leak free oxygen sensor, oem style TPS/IAC, fuel pressure regulator, all Stainless Steel T-Bolt clamps and a Stainless Steel weldable flange. Sniper EFI is part of a complete ecosystem! Your new Sniper kit pair's seamlessly together with Holley's Sniper Hyperspark Ignition, Fuel System's, Air Cleaners, Throttle Body & Digital Dash to unlock the full potential of your build. Complete your fuel injection journey by checking out our full offer of ignition, fueling and accessories! Features:

Features:

• Fits most stock Rochester Quadrajet™ (Q-Jet) air cleaners
• Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI!
• 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!
• Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
• High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays.
• Supports up to 500hp with Four 100 Lb/Hr Injectors!
• Throttle body mounted ECU “ no extra boxes to mount
• Designed to deliver the signature Rochester Roar at Wide Open Throttle!
• Integrated ignition timing control
• Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4
• Brake Booster adapter included, if required
• Universal Throttle and transmission kickdown bracket included
• 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
• 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
• Requires external fuel pressure regulator, such as: 12-886 or 12-879

Details:

• CFM: 715
• Coast Guard Approved: Yes
• Finish: Classic Gold
• Flange Style: Spreadbore
• Fuel Pressure: 58.5 PSI
• 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
• Throttle Bore: 1.375 Primary / 2.00 Secondary
• Transmission: 700R4/200R4

Links
Troubleshooting Guide
Instruction Sheet
Quickstart Guide