EFI Conversion, Sniper Quadrajet, Standard Kit

Universal Sniper Quadrajet Spreadbore Throttle-Body EFI Kit by Holley®

Self-learning spreadbore EFI supports up to 500 HP on compatible Quadrajet intake manifolds.

This Holley® Sniper Quadrajet electronic fuel-injection system is designed to mount in place of a Rochester Quadrajet four-barrel carburetor on a compatible spreadbore intake without adding a square-bore adapter. The throttle-body assembly retains a carburetor-style appearance while using four 100-lb/hr fuel injectors, an integrated controller and an oxygen-sensor feedback loop that refines fueling as you drive. A 3.5-inch color touchscreen supports initial calibration, live engine-data monitoring and adjustment without a laptop. The system is rated for up to 500 horsepower on naturally aspirated engines and offers ignition-timing control when used with compatible supporting ignition components. Fuel inlet arrangement and finishes depend on the selected model. This is the standard throttle-body EFI conversion rather than a master fuel-system package. The vehicle must already have, or be fitted with, a separate EFI-capable pump, return plumbing and suitable fuel-pressure regulation.

• For Rochester Quadrajet spreadbore intake • Up to 500 naturally aspirated horsepower • Four 100-lb/hr fuel injectors • Self-learning ECU and wideband oxygen feedback • 3.5-inch setup and monitoring touchscreen • Separate high-pressure EFI fuel supply required