1962-1988 Chevrolet Holley Sniper EFI Stealth 4150 Master Kit, Shiny Finish 550-870K

The Sniper Stealth 4150 EFI system from Holley features 4, 100LB/HR Fuel Injectors capable of supporting Chevrolets with up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400 and 200R4/700R4 applications.Master Kits include complete fuel system with an external fuel pressure regulator preset to 58.5psi, 20ft of 3/8in Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!Features:Bolt on 4150 Flange Carburetor ReplacementThrottle body mounted ECU Ð no extra boxes to mountSupports up to 650hp with Four 100 Lb/Hr Injectors!All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.Timed spark part for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor.Air entry is machined to fit most stock style air cleaners with air cleaner locator provisions.Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886.Integrated ignition timing controlHigh Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge DisplaysSimple 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 donÕt have to be a computer/tuning wiz to have EFI!The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service.Included clamp-on oxygen sensor kit for 2.25 inch exhaust ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flangeSpecs:CFM:870Finish:ShinyFlange Style:4150Fuel Pressure:58.5 PSIHeight:3.28inInjector Size:100 lb/hr @ 58.5 PSIInlet / Outlet Size:3/4-16 Female O-Ring (AN 8)MAP Sensor:2BarMax Horsepower Rating:650 Naturally Aspirated

Manufacturer Part Number : 550-870K

Part Notes:

Helpful Articles:

• Prepping for Fuel Injection