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Holley

EFI Conversion, Sniper Quadrajet, Master Set

Vehicle Specific View fitment for 28 models
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Part# HY5086K
Mfg# 550-867K
Sold As Set
$1,896.99
List Price: $2,087.95
You Save $190.96

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Allow 2-6 weeks for item to arrive.
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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 Master Kit Includes: • Sniper EFI Throttle Body Assembly • Main Harness and Ignition Adapter • Bosch Wide Band Oxygen Sensor • Coolant Temperature Sensor • Air Cleaner Gasket • 3.5” Touch Screen Controller • Output Harness • 1 - Fuel Pump • 20FT- 3/8"" EFI Vapor Guard Hose • 13 - 3/8"" Vapor Guard Hose Clamps • 1 - Post Fuel Filter • 1 - Pre Fuel Filter • 3 - -6ST to 3/8"" hose end • 1 - fuel cuff • 1 - 2/pk Dowty washer • 2 - -6 bulkhead nut • 1 - -6 90 DG Bulkhead fitting • 2 - 3/8""NPT to 3/8"" Vapor Guard fitting • 1 - 3/8""NPT hex plug • 1 - EFI fuel pressure regulator

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.
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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
1982 Buick Grand National Master Kit
1984–1987 Buick Grand National Master Kit
1978–1987 Buick Regal Master Kit
1963–1976 Buick Riviera Master Kit
1961–1972 Buick Skylark Master Kit
1983–1987 Buick T-Type Master Kit
1938–1993 Cadillac 60 Special Master Kit
1965–1976 Cadillac Calais Master Kit
1959–1993 Cadillac DeVille Master Kit
1953–1993 Cadillac Eldorado Master Kit
1954–1993 Cadillac Fleetwood Master Kit
1936–1951 Cadillac Series 60 Master Kit
1936–1951 Cadillac Series 61 Master Kit
1937–1976 Cadillac Series 62 Master Kit
1936–1951 Cadillac Series 63 Master Kit
1937–1976 Cadillac Series 65 Master Kit
1936–1987 Cadillac Series 70 Master Kit
1976–1993 Cadillac Seville Master Kit
1964–1977 Chevrolet Chevelle Master Kit
1964–1987 Chevrolet El Camino 1964–1977: Master Kit
1978–1987: Master Kit
1978–1983 Chevrolet Malibu Master Kit
1970–1988 Chevrolet Monte Carlo 1970–1977: Master Kit
1978–1988: Master Kit
1961–1987 Oldsmobile Cutlass 1961–1977: Master Kit
1978–1987: Master Kit
1959–1977 Pontiac Bonneville Master Kit
1982–1986 Pontiac Bonneville Master Kit
1959–1977 Pontiac Catalina Master Kit
1962–1987 Pontiac Grand Prix 1962–1977: Master Kit
1978–1987: Master Kit
1964–1973 Pontiac GTO Master Kit
1961–1973 Pontiac LeMans Master Kit
1961–1970 Pontiac Tempest Master Kit
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