Sniper Motorsports 550-869 Holley Sniper EFI Quadrajet™ – Classic Gold

Description

Supports Up To 500 HP – 3.5 in. LCD Touchscreen – For Spreadbore Manifold The Sniper EFI Quadrajet™ is here to help with classic installs, perfect for not having enough hood clearance to mount an adapter or don’t want to replace your OEM spread bore intake. Our bolt-on spread bore electronic fuel injected throttle body system 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 with (4) 100 lb./hr. fuel injectors, built-in timing control, 3.5″ LCD touchscreen, and much more. For power, this throttle body will support up to 500 HP naturally aspirated. In addition, 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 appearance installation. After you’ve installed your EFI, use our included 3.5″ handheld to answer a few simple questions and your system will begin to self-tune with no laptop required. This can also be installed on marine applications, please refer to Tech Resources section for more information on the correct and safest way to install.

• Fits most stock Rochester Quadrajet™ (Q-Jet) air cleaners
• Fuel pump outlet wire with built in relay to directly power the fuel pump
• Initial handheld calibration wizard creates a base tune with no laptop needed
• Included universal throttle, transmission kickdown bracket, and brake booster adapter
• Bosch LSU 4.9 Wideband Oxygen (O2) Sensor for maximum performance on real time fuel map learning
• Designed to deliver the signature Rochester Roar at wide open throttle (WOT)
• Built in Manifold Air Pressure (MAP) and Inlet Air Temperature (IAT) sensors automatically adjust to the changing conditions
• (4) 100 lb./hr. fuel injectors and 715 CFM throttle body supporting up to 500 HP naturally aspirated
• Throttle body mounted ECU for a cleaner engine bay
• 3 ground trigger outputs to control accessories such as cooling fans, AC, etc.
• Simple installation with only (4) wires including Battery+, Battery-, 12V switched ignition, and RPM signal
• Certified to ISO 8846, SAE J1171, and United States Coast Guard Requirements for Ignition Protection and Fire Resistance
• 3.5” LCD handheld touchscreen for setup, tuning, gauge displays, and other viewing parameters
• Integrated ignition timing control when paired with HyperSpark line of distributors and ignition components, along with Holley Dual Sync

Information:

For marine installations, a flame arrestor is legally required. We recommend Holley P/N 720-1 or 720-11 Flame Arrestor, along with Holley P/N 720-31 or 720-33 Flame Arrestor Vent Tube to ensure proper function, safety, and compliance.

Application Summary: