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Product Summary

Universal Fit, 100 lbs./hr. Injector Size, User Tunable

    Key Specs

    MFG. Part #550-855
    BrandHolley Sniper

    Need To Know

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    Details

    Let's face it, you love driving your classic car, but dread the hassles with your Rochester 2GC Large Bore carburetor. Today's fuels are blended for modern fuel injection, not that old 2 Jet carburetor from 50+ years ago. Holley makes it easy to convert your classic car with a Rochester 2GC Large Bore two-barrel carburetor to fuel injection. The Sniper EFI 2GC Large Bore is a bolt-on electronic fuel injection system that will put the fun back in your classic ride. The Rochester 2GC Large Bore carburetor was commonly used on 1974 - 1978 Chevrolet, GMC, Oldsmobile, and Pontiac vehicles such as the Camaro, Firebird, El Camino, Corvette, Omega and most C-10 through K3500 series trucks.

    Installation of the Sniper EFI 2GC Large Bore throttle body is simple and straightforward:

    1. Remove your current carburetor and bolt on the new Sniper EFI system. No intake manifold adapters required!
    2. Reinstall your factory or custom air cleaner

    The Sniper EFI 2GC air cleaner flange matches the Rochester 2GC so it accepts most factory air cleaners. 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!

    Features

    • Bolt-on Rochester 2GC large-bore two-barrel carburetor replacement
    • Installs directly to the factory Rochester 2GC large bore intake manifold, no adapter required
    • Engineered to fit 1955-1969 GM vehicles that utilized the Rochester 2GC large-bore carburetor
    • Designed to fit most factory Rochester 2GC large bore air cleaner assemblies
    • Universal throttle lever with TH350, 700R4 & 200-4R kick down provisions
    • Throttle body mounted ECU – no extra boxes to mount
    • Not designed for Tri-Power installations.
    • Supports up to 350HP with Two 100lb/hr Injectors
    • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
    • Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI)
    • Integrated ignition timing control (with Holley Hyperspark, Holley Dual Sync or MSD Pro-Billet distributors)
    • High-Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
    • 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!
    • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
    • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
    • OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service.
    • 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

    Charts

    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    Specifications

    KEY SPECS
    MFG. Part #550-855
    BrandHolley Sniper
    GENERAL
    Injector Size100 lbs./hr.
    User TunableYes
    Self TuningYes
    Throttle Body IncludedYes
    Throttle Body FinishPolished
    Venturi Quantity2
    Fuel Pressure Regulator IncludedYes
    IAC Motor IncludedYes
    TPS Sensor IncludedYes
    GTIN Code090127072752
    Sold in QuantityKit