Sniper 550-857 - Holley EFI 2GC Large Bore - Classic Gold

Sniper 550-857 - Holley EFI 2GC Large Bore - Classic Gold

Holley Sniper EFI 2GC Large Bore - Classic Gold

Sniper EFI Conversion kit for 1974-1978 Chevrolet, GMC, Oldsmobile, and Pontiac vehicles that came with Rochester 2GC Large Bore Carbs.

Not only does the Sniper EFI 2GC offer superior throttle response and WOT power over the carburetor, but you may also benefit from increased fuel economy! Put an end to cold start issues, hesitations, vapor lock, and flooding with the accuracy of EFI. You can also use the Sniper EFI 2GC to control the ignition timing, taking EFI to the next level. The Sniper EFI 2GC system is capable of supporting 350 HP on naturally aspirated engines. Upgrade to Sniper EFI today!

• Engineered to fit 1974-1978 GM vehicles that utilized the Rochester 2GC large bore carburetor
• Throttle body mounted ECU – no extra boxes to mount
• Universal throttle lever with TH350, 700R4 & 200-4R kick down provisions
• Throttle body mounted ECU – no extra boxes to mount
• Installs directly to the factory Rochester 2GC large bore intake manifold, no adapter required
• Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
• Supports up to 350HP with Two 100lb/hr Injectors
• The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
• Bolt on Rochester 2GC large bore two barrel carburetor replacement
• High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
• Designed to fit most factory 2GC air cleaner assemblies
• Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
• Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
• Designed to fit most factory Rochester 2GC large bore air cleaner assemblies
• Included clamp-on oxygen sensor kit for 2.0" exhaust ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange