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Holly Sniper EFI Holley 2GC Small Bore, Classic Gold 550-866

Holly Sniper EFI Holley 2GC Small Bore, Classic Gold 550-866
Holly Sniper EFI Holley 2GC Small Bore, Classic Gold 550-866Holly Sniper EFI Holley 2GC Small Bore, Classic Gold 550-866Holly Sniper EFI Holley 2GC Small Bore, Classic Gold 550-866Holly Sniper EFI Holley 2GC Small Bore, Classic Gold 550-866
$2,127.99 ea
NEWOUT OF STOCK
Model: 4008255
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
STANDARD
DELIVERY
Let's face it, you love driving your classic car, but dread the hassles with your Rochester 2GC carburetor. Today's fuels are blended for modern fuel injection, not that old 2Jet carburetor from 50+ years ago. Holley makes it easy to convert your classic car with a small bolt pattern, two-barrel, Rochester 2GC carb to fuel injection. The Sniper EFI 2GC Small Bore is a bolt on electronic fuel injection system that will put the fun back in your classic ride. The Rochester 2GC small bore carburetor was commonly used on 1955 - 1969 Chevrolet and Buick, Oldsmobile, and Pontiac vehicles such as the Camaro, Electra, Super 88, Tempest and most C-10 through K3500 series trucks. Installation of the Sniper EFI 2GC Small Bore throttle body is simple and straightforward:  Remove your current carburetor and bolt on the new Sniper EFI system. No intake manifold adapters required!  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:
  • 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
  • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
  • Supports up to 350HP with Two 100lb/hr Injectors
  • 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
  • Bolt on Rochester 2GC small bore two barrel carburetor replacement
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Installs directly to the factory Rochester 2GC small bore intake manifold, no adapter required
  • Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI)
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
  • Throttle body mounted ECU – no extra boxes to mount
  • 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!
  • OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service.
  • Engineered to fit 1955-1969 GM vehicles that utilized the Rochester 2GC small bore carburetor
  • Designed to fit most factory 2GC air cleaner assemblies
  • Not designed for Tri-Power installations.
  • Universal throttle lever with TH350, 700R4 & 200-4R kick down provisions

Downloads:

Download Name File Size
199r11366.pdf1.59MB
199r11772.pdf5.51MB

Videos:

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine
Chevrolet Bel Air Base 1955 4.3L / 265 / V8
Chevrolet Bel Air Base 1956 4.3L / 265 / V8
Chevrolet Bel Air Base 1957 4.6L / 283 / V8
4.3L / 265 / V8
Chevrolet Bel Air Base 1958 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Bel Air Base 1959 5.7L / 348 / V8
4.6L / 283 / V8
5.3L / 322 / V8
4.3L / 261 / L6
Chevrolet Bel Air Base 1960 5.7L / 348 / V8
4.6L / 283 / V8
4.3L / 261 / L6
Chevrolet Bel Air Base 1961 5.7L / 348 / V8
4.6L / 283 / V8
6.7L / 409 / V8
Chevrolet Bel Air Base 1962 4.6L / 283 / V8
6.7L / 409 / V8
5.3L / 327 / V8
Chevrolet Bel Air Base 1963 4.6L / 283 / V8
6.7L / 409 / V8
5.3L / 327 / V8
Chevrolet Bel Air Base 1964 4.6L / 283 / V8
6.7L / 409 / V8
5.3L / 327 / V8
Chevrolet Bel Air Base 1965 4.6L / 283 / V8
6.7L / 409 / V8
5.3L / 327 / V8
Chevrolet Bel Air Base 1966 4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet Bel Air Base 1967 4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet Bel Air Base 1968 5.0L / 307 / V8
5.3L / 327 / V8
Chevrolet Bel Air Base 1969 5.7L / 350 / V8
5.3L / 327 / V8
Chevrolet Bel Air Beauville 1955 4.3L / 265 / V8
Chevrolet Bel Air Beauville 1956 4.3L / 265 / V8
Chevrolet Bel Air Nomad 1955 4.3L / 265 / V8
Chevrolet Bel Air Nomad 1956 4.3L / 265 / V8
Chevrolet Bel Air Nomad 1957 4.3L / 265 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1958 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1959 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1960 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1961 6.7L / 409 / V8
5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1962 6.7L / 409 / V8
5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1963 6.7L / 409 / V8
5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1964 6.7L / 409 / V8
5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1965 6.7L / 409 / V8
5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1966 5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1967 5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1968 5.0L / 307 / V8
5.3L / 327 / V8
Chevrolet Biscayne Base 1969 5.3L / 327 / V8
5.7L / 350 / V8
Chevrolet Biscayne Fleetmaster 1960 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Brookwood Base 1958 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Brookwood Base 1959 4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet Brookwood Base 1960 4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet Brookwood Base 1961 4.6L / 283 / V8
5.7L / 348 / V8
6.7L / 409 / V8
Chevrolet Brookwood Base 1969 5.3L / 327 / V8
5.7L / 350 / V8
5.0L / 307 / V8
Chevrolet Caprice Base 1966 4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet Caprice Base 1967 4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet Caprice Base 1968 5.3L / 327 / V8
5.0L / 307 / V8
Chevrolet Caprice Base 1969 5.3L / 327 / V8
5.0L / 307 / V8
5.7L / 350 / V8
Chevrolet Del Ray Base 1957 4.6L / 283 / V8
4.3L / 265 / V8
Chevrolet Del Ray Base 1958 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Estate Base 1969 5.0L / 307 / V8
5.3L / 327 / V8
5.7L / 350 / V8
Chevrolet Impala Base 1958 4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet Impala Base 1959 4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet Impala Base 1960 4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet Impala Base 1961 4.6L / 283 / V8
5.7L / 348 / V8
6.7L / 409 / V8
Chevrolet Impala Base 1962 4.6L / 283 / V8
6.7L / 409 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1963 4.6L / 283 / V8
6.7L / 409 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1964 4.6L / 283 / V8
6.7L / 409 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1965 4.6L / 283 / V8
6.7L / 409 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1966 4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1967 4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1968 5.0L / 307 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1969 5.7L / 350 / V8
5.0L / 307 / V8
5.3L / 327 / V8
Chevrolet Impala SS 1964 6.7L / 409 / V8
4.6L / 283 / V8
Chevrolet Impala SS 1965 6.7L / 409 / V8
Chevrolet Impala SS 1966 4.6L / 283 / V8
Chevrolet Impala SS 1967 4.6L / 283 / V8
Chevrolet Nomad Base 1955 4.3L / 265 / V8
Chevrolet Nomad Base 1956 4.3L / 265 / V8
Chevrolet Nomad Base 1957 4.3L / 265 / V8
4.6L / 283 / V8
Chevrolet Nomad Base 1958 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Nomad Base 1959 4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet Nomad Base 1960 4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet Nomad Base 1961 6.7L / 409 / V8
4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet One-Fifty Series Base 1955 4.3L / 265 / V8
Chevrolet One-Fifty Series Base 1956 4.3L / 265 / V8
Chevrolet One-Fifty Series Base 1957 4.6L / 283 / V8
4.3L / 265 / V8
Chevrolet Parkwood Base 1959 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Parkwood Base 1960 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Parkwood Base 1961 5.7L / 348 / V8
6.7L / 409 / V8
4.6L / 283 / V8
Chevrolet Townsman Base 1969 5.0L / 307 / V8
5.3L / 327 / V8
5.7L / 350 / V8
Chevrolet Two-Ten Series Base 1955 4.3L / 265 / V8
Chevrolet Two-Ten Series Base 1956 4.3L / 265 / V8
Chevrolet Two-Ten Series Base 1957 4.3L / 265 / V8
4.6L / 283 / V8
Chevrolet Two-Ten Series Del Ray 1955 4.3L / 265 / V8
Chevrolet Two-Ten Series Del Ray 1956 4.3L / 265 / V8
Chevrolet Two-Ten Series Del Ray 1957 4.6L / 283 / V8
4.3L / 265 / V8
Chevrolet Yeoman Base 1958 4.6L / 283 / V8
5.7L / 348 / V8

Specifications:

Emission Code 3
Finish Classic Gold
Fuel Pressure 58.5 PSI
Injector Size 100 lb/hr @ 58.5 PSI
Inlet / Outlet Size 9/16-18 Female O-Ring (AN 6)
Part Type Fuel Injection Conversion Kit
Product Type Sniper EFI 2GC Small Bore
Proposition 65 www.P65Warnings.ca.gov

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Holly Sniper EFI Holley 2GC Small Bore, Classic Gold 550-866:
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