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Holley Sniper 650 HP EFI Conversion Kit, Polished Finish

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$999.99 Kit
Thunderbird, 1955 thru 1979 View More
Product Details
KEY FEATURES & BENEFITS: Replaces Your Single V-8... View More
Availability: Ships Direct From Manufacturer
  • Replaces Your Single V-8 4 Barrel Carburetor With Precise Fuel Injection Technology
  • Works With Factory Or Aftermarket Single V-8 4-Barrel Intake Manifolds & Air Cleaner Assemblies
  • Eliminates Hard Starting, Sputtering, Cold Start Warmups, Flooding, Hesitations, Vapor Lock, & Interior Fuel Smell 
  • Instant Starting & Throttle Response (Even After Long Term Storage), Improves Mileage, Superior All-Climate Drivability
  • Throttle Body Mounted ECU - No Extra Boxes To Mount
  • 4 Wire Vehicle Connection (Battery +, Bettery -, Switched Ignition, & RPM)
  • Self Tuning ECU Means You Don't Have To Be A Computer/Tuning Siz To Have EFI
  • Includes Widebad Oxygen Sensor For Realtime Fuel Map Learn
  • Uses Same Throttle & Transmission Linkage As 4150 Holley Carburetors
  • Integrated Fuel Pressure Regulator, Ignition Timing Control & Coil Driver
  • Shiny Looks Great, Is Durable, and Easy To Clean
  • Notes:  Requires Separate Fuel System Purchase, NOT Included - See Fuel Command Center Under Related Items (All The Benefits Of An In-Tank Fuel Pump Without Modifying Your Fuel Tank!).  Pre-Drilled To Fit Quadrajet Intake Manifolds (Requires Separate Quadrajet Intake Manifold Adapter Plate Purchase - P/N 122276).  Requires At Least 58 PSI and 67 GPH To Properly Function


  • Quality Level:  High Performance Upgrade
  • Throttle Body Construction:  Die Cast Aluminum
  • Color: Shiny
  • Metering Style:  Speed Density
  • Throttle Body Mounting Flange:  4-Barrel Square Bore
  • Quadrajet Fitment:  Requires Separate Quadrajet Adapter Plate Purchase - P/N 122276
  • Height, Base To Air Cleaner Mounting Surface:  3.75"
  • Venturi Qty:  4
  • CFM Rating:  800
  • Throttle Bore:  1.6875"
  • Injector Quantity:  4
  • Timing Control:  Requires Distributor That Can Lock Out The Timing & Works With MSD 6AL Boxes.
  • Horsepower Range:  250 to 650
  • Supports Forced Induction & Nitrous:  Yes, Supports Up To 25PSI, 2.5 Bar MAP Sensor Is Built In 
  • Idle Up Feature: Yes, IAC Sensor Can Adjust For Cars That Have A/C and Larger Aftermarket Cams
  • Self Tuning:  Yes, In Minutes...Just Answer A Few Questions On Touch Screen Display
  • Laptop Tuning:  No.  Color Touchscreen Is Included For Setup & Gauge Views.  Calibration Wizard Self Allows Easy Setting Of Base Map, Then Computer Self-Tunes In Real Time.
  • Fan Control:  Yes 
  • Linkage & Kickdowns:  Accepts Same Linkage & Kickdowns As Used On Most Carburetors
  • Transmission Control Support:  No, Will Not Control Electronically Controlled Transmissions Or Torque Converters
  • Fuel Pump / System Included:  No. 
  • Compatible With FiTech Fuel Command Center P/N 376727:  Yes
  • What's In The Box:  Throttle body, Fuel Rails, Fuel Injectors, ECM With Calibration Module, Handheld Touch Screen Controller, Plug N Play Wiring Harness, Bosch 4.9 Wide Band 02 Sensor, Fuel Pressure Regulator, GM Type 2.5 BAR MAP Sensor, GM Type TPS Sensor, GM Type IAC Motor, GM Type Coolant Temperature Sensor, GM Type Adjustable Control Fan Switch, Gasket Kit, Step By Step Instructions 
  • Where It's Made: USA
  • Manufacturer Limited Warranty:  90-Day
  • Product Weight: 9 lbs.
  • Product Dimensions:  11 x 8 x 9
  • Approx. Installation Time:   6-8 Hours, Experienced Mechanic Times Quoted, Yours Will Take Longer
  • Installation Difficulty:   Difficult, Seek Professional Installation
  • 50-State Emission Legal:  No

Holley Sniper 650 HP EFI Conversion Kit, Shiny Finish

Combined Cancer/Birth Defect
WARNING This product can expose you to chemicals including Cadmium which is known to the State of California to cause cancer on birth defects or other reproductive harm. For more information, visit
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Availability Ships Direct From Manufacturer

Products from the same brand

Make / Model Series Body Notes Year
Make / Model Ford Thunderbird Series Body Notes Year 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979
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