Holley Sniper EFI Quadrajet Self-Tuning Fuel Injection System 500hp # HO550-867

Holley Sniper EFI Quadrajet Self-Tuning Fuel Injection System 500hp # HO550-867
Fuel Injection Systems, Sniper EFI, Quadrajet, Throttle Body, Polished, Spread Bore Flange, Injectors, Pressure Regulator, Harness, Tuner, Kit
Fuel Injection Style:
Throttle body
Fuel Injection System Type:
Single 4-Barrel Throttle Body (Spread-Bore Flange)
Maximum Horsepower with Gas:
500
Timing Control Compatible:
Yes
Power Adder Compatible:
No
ECM Included:
Yes
Self Tuning:
Yes
User Tunable:
Yes
Fuel Pump Included:
No
EGR:
No
Transmission Controller Included:
No
Metering Style:
Speed density
Intake Manifold Included:
No
Multi-Port Fuel Rails Included:
No
Throttle Body Included:
Yes
Throttle Body Mounting Flange:
4-barrel spread bore
Venturi Quantity:
4
Venturi Diameter (mm):
34.93/51.00mm
Airflow Rate (cfm):
715 cfm
Throttle Body Material:
Cast aluminum
Throttle Body Finish:
Tumble polished
Injectors Included:
Yes
Injector Size (lbs/hr):
100 lbs./hr.
Calibration Module Included:
Yes
Wiring Harness Included:
Yes
Oxygen Sensor Included:
Yes
Fuel Pressure Regulator Included:
No
Distributor Included:
No
MAP Sensor Included:
Yes
IAT Sensor Included:
Yes
TPS Sensor Included:
Yes
IAC Motor Included:
Yes
Quantity:
Sold as a kit.
Holley Sniper EFI Quadrajet Self-Tuning Fuel Injection Systems
Holley Sniper EFI Quadrajet self-tuning fuel injection systems are ideal replacements when you're tired of rebuilding the 50-plus-year-old Rochester Quadrajet (Q-jet) on your classic ride. They're the first bolt-on, spread-bore, EFI throttle-body systems not requiring any additional adapters, sealing plates, or intake manifold swaps. They retain the same great features as the 4150 Sniper EFI version (four 100 lbs.-hr. injectors; built-in timing control; high resolution 3.5 in. full color touchscreen; etc.). Their throttle body will support naturally aspirated power up to 500 hp. In addition, they offer multiple fuel inlet configurations that allow for a stock-appearing installation and fit most stock air cleaners. Modernize your Q-jet-powered classic vehicle with a Holley Sniper EFI Quadrajet self-tuning fuel injection system. They are offered individually or in Master kits with external fuel pressure regulator preset to 58.5 psi, 20 ft. of 3/8 in. Vapor Guard fuel hose, fuel pump, filters, necessary hardware, and bulkhead fitting to return fuel into the tank.Features, items, and specs: Designed to deliver the signature "Rochester Roar" at wide-open throttle! Throttle body-mounted ECUno extra boxes to mount Only 4 wiring connections required (battery positive and negative, switched ignition, and rpm) Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4 Universal throttle and transmission kick-down bracket Brake booster adapter (if required) Simple calibration wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its ownno laptop required) Internal fuel pressure regulator preset to 58.5 psi 20 ft. of 3/8 in. Vapor Guard fuel hose Fuel pump and filters Necessary hardware and bulkhead fitting to return fuel to the tank Genuine Bosch LSU 4.9 wide-band oxygen sensor provides real-time fuel map learning OEM-style throttle position sensor (TPS) and idle air control (IAC) for years of dependable service Clamp-on oxygen sensor kit ensures leak-free oxygen sensor installation with stainless steel T-bolt clamps and weld-ready oxygen sensor flange