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Holly Sniper EFI Holley Quadrajet™, Black 550-868

Holly Sniper EFI Holley Quadrajet™, Black 550-868
Holly Sniper EFI Holley Quadrajet™, Black 550-868
$1,879.99 ea
NEWARRIVING SOONEstimated Ship Date 05/16/2024 (If Ordered Today)19 Available from HOLLEY PERFORMANCE PRODUCTS as of 04/25/2024
Model: 4008230
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
STANDARD
DELIVERY
Are you tired of rebuilding the 50+ year old Rochester Quadrajet™ (Q-Jet) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? Introducing Sniper EFI Quadrajet™. 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™ (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™ (Q-Jet) system will fit most stock air cleaners and offers multiple fuel inlet configurations that allow for a stock appearing installation!
Features:
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Requires external fuel pressure regulator, such as: 12-886 or 12-879
  • Patent Pending
  • OEM Style Throttle Position Senser (TPS)/ and Idle Air Control (IAC) for years of dependable service.
  • A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13
  • Available in 3 Finishes - Classic Gold, Shiny and Black Ceramic
  • Universal Throttle and transmission kickdown bracket included
  • 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!
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
  • Brake Booster adapter included, if required
  • Integrated ignition timing control
  • Throttle body mounted ECU – no extra boxes to mount
  • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
  • Designed to deliver the signature Rochester Roar at Wide Open Throttle!
  • Supports up to 500hp with Four 100 Lb/Hr Injectors!
  • Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4
  • Fits most stock Rochester Quadrajet™ (Q-Jet) air cleaners
  • Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance. Making Sniper EFI the perfect choice for carburetor to marine fuel injection conversions!
  • High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays.
  • 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

Downloads:

Download Name File Size
199r11367.pdf1.73MB
199r11324.pdf5.56MB

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 1960 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Bel Air Base 1961 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Bel Air Base 1962 5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Bel Air Base 1963 5.3L / 327 / V8
4.6L / 283 / V8
7.0L / 427 / V8
Chevrolet Bel Air Base 1964 5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Bel Air Base 1965 5.3L / 327 / V8
6.5L / 396 / V8
4.6L / 283 / V8
Chevrolet Bel Air Base 1966 5.3L / 327 / V8
6.5L / 396 / V8
4.6L / 283 / V8
7.0L / 427 / V8
Chevrolet Bel Air Base 1967 5.3L / 327 / V8
6.5L / 396 / V8
4.6L / 283 / V8
7.0L / 427 / V8
Chevrolet Bel Air Base 1968 5.3L / 327 / V8
5.0L / 307 / V8
6.5L / 396 / V8
7.0L / 427 / V8
Chevrolet Bel Air Base 1969 5.3L / 327 / V8
6.5L / 396 / V8
5.7L / 350 / V8
7.0L / 427 / V8
Chevrolet Bel Air Base 1970 6.6L / 400 / V8
7.4L / 454 / V8
6.6L / 402 / V8
5.7L / 350 / V8
Chevrolet Bel Air Base 1971 6.6L / 400 / V8
7.4L / 454 / V8
6.6L / 402 / V8
5.7L / 350 / V8
Chevrolet Bel Air Base 1972 6.6L / 400 / V8
7.4L / 454 / V8
6.6L / 402 / V8
5.7L / 350 / V8
Chevrolet Bel Air Base 1973 6.6L / 400 / V8
7.4L / 454 / V8
5.7L / 350 / V8
Chevrolet Bel Air Base 1974 6.6L / 400 / V8
7.4L / 454 / V8
5.7L / 350 / V8
Chevrolet Bel Air Base 1975 6.6L / 400 / V8
7.4L / 454 / V8
Chevrolet Biscayne Base 1960 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1961 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1962 5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1963 5.3L / 327 / V8
7.0L / 427 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1964 5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1965 5.3L / 327 / V8
6.5L / 396 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1966 5.3L / 327 / V8
6.5L / 396 / V8
7.0L / 427 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1967 5.3L / 327 / V8
6.5L / 396 / V8
7.0L / 427 / V8
4.6L / 283 / V8
Chevrolet Biscayne Base 1968 5.3L / 327 / V8
6.5L / 396 / V8
7.0L / 427 / V8
5.0L / 307 / V8
Chevrolet Biscayne Base 1969 5.3L / 327 / V8
6.5L / 396 / V8
7.0L / 427 / V8
5.7L / 350 / V8
Chevrolet Biscayne Base 1970 7.4L / 454 / V8
6.6L / 402 / V8
6.6L / 400 / V8
5.7L / 350 / V8
Chevrolet Biscayne Base 1971 7.4L / 454 / V8
6.6L / 402 / V8
6.6L / 400 / V8
5.7L / 350 / V8
Chevrolet Biscayne Base 1972 7.4L / 454 / V8
6.6L / 402 / V8
6.6L / 400 / V8
5.7L / 350 / V8
Chevrolet Biscayne Fleetmaster 1960 5.7L / 348 / V8
4.6L / 283 / 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
Chevrolet Brookwood Base 1969 5.0L / 307 / V8
6.5L / 396 / V8
5.7L / 350 / V8
7.0L / 427 / V8
5.3L / 327 / V8
Chevrolet Brookwood Base 1970 7.4L / 454 / V8
6.6L / 402 / V8
6.6L / 400 / V8
5.7L / 350 / V8
Chevrolet Brookwood Base 1971 7.4L / 454 / V8
5.0L / 307 / V8
6.6L / 402 / V8
6.6L / 400 / V8
5.7L / 350 / V8
Chevrolet Brookwood Base 1972 7.4L / 454 / V8
5.0L / 307 / V8
6.6L / 402 / V8
6.6L / 400 / V8
5.7L / 350 / V8
Chevrolet Caprice Base 1966 7.0L / 427 / V8
6.5L / 396 / V8
5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Caprice Base 1967 7.0L / 427 / V8
6.5L / 396 / V8
5.3L / 327 / V8
4.6L / 283 / V8
Chevrolet Caprice Base 1968 7.0L / 427 / V8
6.5L / 396 / V8
5.3L / 327 / V8
5.0L / 307 / V8
Chevrolet Caprice Base 1969 7.0L / 427 / V8
6.5L / 396 / V8
5.3L / 327 / V8
5.0L / 307 / V8
5.7L / 350 / V8
Chevrolet Caprice Base 1970 6.6L / 402 / V8
7.4L / 454 / V8
5.7L / 350 / V8
6.6L / 400 / V8
Chevrolet Caprice Base 1971 6.6L / 402 / V8
7.4L / 454 / V8
5.0L / 307 / V8
5.7L / 350 / V8
6.6L / 400 / V8
Chevrolet Caprice Base 1972 6.6L / 402 / V8
7.4L / 454 / V8
5.0L / 307 / V8
5.7L / 350 / V8
6.6L / 400 / V8
Chevrolet Caprice Classic Estate 1976 6.6L / 400 / V8
7.4L / 454 / V8
Chevrolet Caprice Classic Estate 1977 5.0L / 305 / V8
Chevrolet Caprice Classic Estate 1978 5.0L / 305 / V8
Chevrolet Caprice Classic Landau 1976 6.6L / 400 / V8
7.4L / 454 / V8
Chevrolet Caprice Classic Landau 1977 5.0L / 305 / V8
Chevrolet Caprice Classic Landau 1978 5.0L / 305 / V8
Chevrolet Caprice Classic Landau 1979 5.0L / 305 / V8
Chevrolet Caprice Classic Sport 1975 6.6L / 400 / V8
7.4L / 454 / V8
Chevrolet Caprice Classic Sport 1976 6.6L / 400 / V8
7.4L / 454 / V8
Chevrolet Caprice Classic Sport 1979 5.0L / 305 / V8
Chevrolet Caprice Classic 1973 7.4L / 454 / V8
6.6L / 400 / V8
5.0L / 307 / V8
5.7L / 350 / V8
Chevrolet Caprice Classic 1974 7.4L / 454 / V8
6.6L / 400 / V8
5.7L / 350 / V8
Chevrolet Caprice Classic 1975 7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Caprice Classic 1976 7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Caprice Classic 1977 5.0L / 305 / V8
Chevrolet Caprice Classic 1978 5.0L / 305 / V8
Chevrolet Caprice Classic 1979 5.0L / 305 / V8
Chevrolet Caprice Estate Wagon 1975 7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Caprice Estate 1973 5.7L / 350 / V8
6.6L / 400 / V8
7.4L / 454 / V8
5.0L / 307 / V8
Chevrolet Caprice Estate 1974 5.7L / 350 / V8
6.6L / 400 / V8
7.4L / 454 / V8
Chevrolet Estate Base 1969 6.5L / 396 / V8
5.7L / 350 / V8
5.0L / 307 / V8
7.0L / 427 / V8
5.3L / 327 / V8
Chevrolet Estate Base 1970 7.4L / 454 / V8
5.7L / 350 / V8
5.0L / 307 / V8
6.6L / 400 / V8
6.6L / 402 / V8
Chevrolet Impala Base 1960 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Impala Base 1961 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Impala Base 1962 4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1963 7.0L / 427 / V8
4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1964 4.6L / 283 / V8
5.3L / 327 / V8
Chevrolet Impala Base 1965 4.6L / 283 / V8
5.3L / 327 / V8
6.5L / 396 / V8
Chevrolet Impala Base 1966 7.0L / 427 / V8
4.6L / 283 / V8
5.3L / 327 / V8
6.5L / 396 / V8
Chevrolet Impala Base 1967 7.0L / 427 / V8
4.6L / 283 / V8
5.3L / 327 / V8
6.5L / 396 / V8
Chevrolet Impala Base 1968 5.0L / 307 / V8
7.0L / 427 / V8
5.3L / 327 / V8
6.5L / 396 / V8
Chevrolet Impala Base 1969 5.0L / 307 / V8
7.0L / 427 / V8
5.7L / 350 / V8
5.3L / 327 / V8
6.5L / 396 / V8
Chevrolet Impala Base 1970 6.6L / 402 / V8
5.7L / 350 / V8
7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Base 1971 5.0L / 307 / V8
6.6L / 402 / V8
5.7L / 350 / V8
7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Base 1972 5.0L / 307 / V8
6.6L / 402 / V8
5.7L / 350 / V8
7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Base 1973 5.0L / 307 / V8
5.7L / 350 / V8
7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Base 1974 5.7L / 350 / V8
7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Base 1975 7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Base 1976 7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Base 1977 5.0L / 305 / V8
Chevrolet Impala Base 1978 5.0L / 305 / V8
Chevrolet Impala Base 1979 5.0L / 305 / V8
Chevrolet Impala Custom Landau 1976 7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Custom 1975 6.6L / 400 / V8
7.4L / 454 / V8
Chevrolet Impala Custom 1976 6.6L / 400 / V8
7.4L / 454 / V8
Chevrolet Impala Custom 1977 5.0L / 305 / V8
Chevrolet Impala Landau 1977 5.0L / 305 / V8
Chevrolet Impala Landau 1978 5.0L / 305 / V8
Chevrolet Impala Landau 1979 5.0L / 305 / V8
Chevrolet Impala SS 1964 4.6L / 283 / V8
Chevrolet Impala SS 1965 6.5L / 396 / V8
Chevrolet Impala SS 1966 7.0L / 427 / V8
6.5L / 396 / V8
4.6L / 283 / V8
Chevrolet Impala SS 1967 7.0L / 427 / V8
6.5L / 396 / V8
4.6L / 283 / V8
Chevrolet Impala S 1976 6.6L / 400 / V8
7.4L / 454 / V8
Chevrolet Impala Sport 1975 7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Sport 1976 7.4L / 454 / V8
6.6L / 400 / V8
Chevrolet Impala Sport 1979 5.0L / 305 / V8
Chevrolet Nomad Base 1960 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Nomad Base 1961 5.7L / 348 / V8
4.6L / 283 / V8
Chevrolet Parkwood Base 1960 4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet Parkwood Base 1961 4.6L / 283 / V8
5.7L / 348 / V8
Chevrolet Townsman Base 1969 5.3L / 327 / V8
5.7L / 350 / V8
6.5L / 396 / V8
5.0L / 307 / V8
7.0L / 427 / V8
Chevrolet Townsman Base 1970 6.6L / 400 / V8
5.7L / 350 / V8
6.6L / 402 / V8
7.4L / 454 / V8
Chevrolet Townsman Base 1971 6.6L / 400 / V8
5.7L / 350 / V8
5.0L / 307 / V8
6.6L / 402 / V8
7.4L / 454 / V8
Chevrolet Townsman Base 1972 6.6L / 400 / V8
5.7L / 350 / V8
5.0L / 307 / V8
6.6L / 402 / V8
7.4L / 454 / V8

Specifications:

CFM 715
Coast Guard Approved Yes
Emission Code 3
Finish Black
Flange Style Spreadbore
Fuel Pressure 58.5 PSI
Height 3.28"
Injector Size 100 lb/hr @ 58.5 PSI
Inlet / Outlet Size 9/16-18 Female O-Ring (AN 6)
MAP Sensor 2Bar
Max Horsepower Rating 500 Naturally Aspirated
Part Type Carburetor
Product Type Sniper EFI Quadrajet
Proposition 65 www.P65Warnings.ca.gov
Throttle Bore 1.375 Primary / 2.00 Secondary
Transmission 700R4/200R4

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