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Holley

EFI Conversion, Sniper Quadrajet, Standard Kit

Vehicle Specific View fitment for 25 models
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Part# HY55086
Mfg# 550-867
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$1,502.99
List Price: $1,653.95
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Improve your vehicle's fuel economy

Includes throttle and transmission kickdown bracket

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: - Throttle body mounted ECU – no extra boxes to mount - Supports up to 500hp with Four 100 lb./hr. Injectors! - Only 4 Wiring Connections Required (Battery +, Battery - , Switched Ignition & RPM) - Integrated ignition timing control - Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4 - Brake Booster adapter included, if required - Universal Throttle and transmission kickdown bracket included - 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) - 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 real-time Fuel Map Learn - OEM Style Throttle Position Sensor (TPS)/ and Idle Air Control (IAC) for years of dependable service. - 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 - Requires external fuel pressure regulator, such as: 12-886 or 12-879

Notes

  • Standard kits require external fuel pressure regulator, such as: 12-886, 12-879, 12-880, or 12-881.
  • This item is not eligible for any further discounts or promotional pricing.
  • SHIP NOTE: This item is SPECIAL ORDER and will drop-ship from the manufacturer. While the majority of drop ship orders experience no delays, please be advised that OPGI does not control delivery times.
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This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution-controlled vehicles only. Learn More

Find Item In These Catalogs

  • 2023 Cadillac 1936-1993 104
  • 2023 Cutlass, F-85 & 442 61-77 183
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1963–1976 Buick Riviera Standard Kit
1961–1972 Buick Skylark Standard Kit
1938–1993 Cadillac 60 Special Standard Kit
1965–1976 Cadillac Calais Standard Kit
1959–1993 Cadillac DeVille Standard Kit
1953–1993 Cadillac Eldorado Standard Kit
1954–1993 Cadillac Fleetwood Standard Kit
1936–1951 Cadillac Series 60 Standard Kit
1936–1951 Cadillac Series 61 Standard Kit
1937–1976 Cadillac Series 62 Standard Kit
1936–1951 Cadillac Series 63 Standard Kit
1937–1976 Cadillac Series 65 Standard Kit
1936–1987 Cadillac Series 70 Standard Kit
1976–1993 Cadillac Seville Standard Kit
1964–1977 Chevrolet Chevelle Standard Kit
1964–1987 Chevrolet El Camino 1964–1977: Standard Kit
1978–1987: Standard Kit
1978–1983 Chevrolet Malibu Standard Kit
1970–1988 Chevrolet Monte Carlo 1970–1977: Standard Kit
1978–1988: Standard Kit
1961–1987 Oldsmobile Cutlass 1961–1977: Standard Kit
1959–1977 Pontiac Bonneville Standard Kit
1982–1986 Pontiac Bonneville Standard Kit
1959–1977 Pontiac Catalina Standard Kit
1962–1987 Pontiac Grand Prix 1962–1977: Standard Kit
1978–1987: Standard Kit
1964–1973 Pontiac GTO Standard Kit
1961–1973 Pontiac LeMans Standard Kit
1961–1970 Pontiac Tempest Standard Kit
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