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Holley EFI Terminator Stealth EFI w/ GM Transmission Control, Polished 550-442

Holley EFI Terminator Stealth EFI w/ GM Transmission Control, Polished 550-442
$5,891.99 ea
NEWBackordered until 03/07/2024
Model: 4007497
Have you been hesitant on switching to EFI because you like the traditional look of a carburetor? Do you have a GM 4L60E/80E Transmission in your hotrod? There is no more need to worry! Holley has you covered with the new Terminator Stealth Throttle Body Fuel injection System. Now you can have all of the benefits of EFI yet, maintain the traditional looks of a carburetor. Holley's Terminator Stealth EFI systems have the same great self-tuning features of our Terminator EFI in a new stealthy package! - 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 - Carburetor replacement EFI from the fuel systems experts! - Plug and Play with GM 4L60E and 4L80E Transmissions
  • Carburetor looks with the drivability of EFI
  • Trouble-free performance with today’s fuels - put an end to vapor lock and fuel varnish problems!
  • Fits V8 engines from 250-600 horsepower
  • 4150 style 4BBL mounting flange - Bolts on in place of carburetor
  • Available in Polished, Classic Gold and Hard Core Gray™ finishes. A classic carburetor finish coming soon!
  • Fully self-tuning ECU - No laptop required
  • Includes full color, 3.5” touch screen LCD for both basic and advanced tuning options
  • Timing control option for GM Small Cap HEI and Ford TFI distributors
  • Connections for Ford, GM TH350, 700R4 and other transmission linkages
  • Harness provided for GM Electronic 4L60E/4L80E Transmissions, allowing for a fast and easy installation
  • Optional free software upgrade for full laptop control
  • Easy plug and play harnesses with minimal connections
  • Virtually maintenance free - keeps your vehicle reliable and ready to drive
Not recommended for 4x4 applications with electronic transfer cases.
Installation Notes:
Not recommended for 4x4 applications with electronic transfer cases. Not compatible with 4L6X transmissions from model year 1995 or before due to year-by-year changes in converter lockup and downshift strategy.

About Holley Performance Products

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!


Download Name File Size



CFM 950
Emission Code 3
Finish Polished
Flange Size 4150
Fuel Pressure 43 Psi
Height 3.25"
Injector Size 80Lb/Hr @ 43PSI
Part Type Fuel Injection Throttle Body
Product Type Terminator Stealth Kit
Throttle Bore 1.750 inch


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Holley EFI Terminator Stealth EFI w/ GM Transmission Control, Polished 550-442:
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