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Sniper EFI Quadrajet™ Master Kit 550-868K

Sniper EFI Quadrajet™ Master Kit 550-868K


This product is a universal fit that is not specifically made for any given vehicle. Modifications may or may not be needed to use this product on your vehicle.

Holley EFI
Sniper EFI Quadrajet™ Master Kit

Item: 550-868K

Sniper EFI Quadrajet™ Master Kit Self-Tuning Incl. Throttle Body/Coolant Temp Sensor/Oxygen Sensor/Controller/Output Hardness/Main Harness/Ignition Adapter/Hdw Black Finish

Retail Price: $2,049.00

Sale Price: $1,843.95

You Save: $205.05 (10%)


Product Description

Are you tired of rebuilding the 50+ year old Rochester Quadrajet(TM) (Q-Jet) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? Introducing Sniper EFI Quadrajet(TM). 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(TM) (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(TM) (Q-Jet) system will fit most stock air cleaners and offers multiple fuel inlet configurations that allow for a stock appearing installation! ** Complete fuel system includes – external fuel pressure regulator preset to 58.5psi, 20ft of 3/8" Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank! OEM Style Throttle Position Sensor (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

Product Features
  • Delivers The Signature Rochester Roar At Wide Open Throttle!
  • Throttle Body Mounted ECU - No Extra Boxes To Mount
  • Supports Up to 500 HP w/Four 100 lb/hr. Injectors
  • 4 Wire Vehicle Connection Battery +/Battery -/Switch Ignition/RPM
  • Integrated Ignition Timing Control
  • Trans. Provisions On Throttle Lever for TH350/TH400/200R4/700R4
  • Fits Most Stock Rochester Quadrajet Air Cleaners
  • Brake Booster Adapter Included
  • High Resolution Full Color Touchscreen
  • Calibration Wizard - No Laptop Required
  • Self-Tuning ECU Means You Dont Have To Be A Computer/Tuning Wiz
  • Bosch LSU 4.9 Wideband O2 Sensor Provides Realtime Fuel Map Learn
Product Specifications
  • Warning: May contain chemicals known in the state of California to cause cancer, or birth defects or other reproductive harm. For more information, please visit www.p65warnings.ca.gov
Application Guide