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Holley Terminator EFI 4 BBL Kit w/Transmission Control-Hard Core Gray 550-408

SKU: 550-408

Availability: In stock

Handling Time: 30 Days


Terminator EFI 4 BBL Kit w/Transmission Control-Hard Core Gray

Terminator™ EFI 4bbl Throttle Body System with 4L60E/4L80E Trans Control 950 CFM 200-600 HP in Hard Core Gray

An EFI System so easy and powerful you'll think it's alive! Simply bolt it on, feed it a few basic answers and let Terminator EFI take control of your ride!
Easy to install
No computer experience required - Handheld tuner included - Simple multiple choice set-up wizard
Self-tunes while you drive
Upgradable to complete laptop control without buying another ECU
Easy-to-use EFI from the fuel systems experts!


  • Fully self-tuning ECU - No laptop required
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  • Intergrated transmission control GM 4L60E, 4L65E, 4L80E
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  • Trouble-free performance with today's™ fuels - put an end to vapor lock and fuel varnish problems!
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  • Terminator ECU can be EASILY be updated to Holley HP ECU specs with a free online software download. ECU can then be used for LSX, boosted, nitrous, and many other applications in the future as you desire!
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  • ECU fully potted and sealed for protection from vibration, dust and moisture
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  • Provides ignition timing control on engines with Small Cap HEI and Ford TFI distributors (requires adapter)
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  • 80 lb/hr injectors support 250-600 HP engines
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  • Fits any square (Holley 4150) flanged intake
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  • Connections for Ford, GM TH350 and 700R4, and other transmission linkages
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  • Serviceable sensors integrated into throttle body and pre-wired for a simple one-click connection - don"t get stranded by competitive designs
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  • Patent pending annular discharge fuel ring for maximum flow and optimum fuel atomization - No restrictions or delay in fuel flow like booster designs
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  • 950 CFM Throttle Body with CFD computer designed air-entry area taken from Holley's™ famous NASCAR® throttle body "as found on all NASCAR Sprint Cup Series cars
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  • Virtually maintenance free - keeps your vehicle reliable and ready to drive
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  • Self-tunes instantly to deliver the perfect air/fuel mixture in real time for optimized fuel economy and power
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  • Industry leading tech support - free!

Installation Note:


  • Brand: Holley EFI
  • CFM: 950
  • Emission Code: 3
  • Finish: Hard Core Gray
  • Flange Size: 4150
  • Fuel Pressure: 43 Psi
  • Height: 3 Inches
  • Injector Size: 80Lb/Hr @ 43PSI
  • Product Type: Performance TBI
  • Throttle Bore: 1.750 inch