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-10% Terminator LS Throttle Body Injection EFI System

Get all the great features of Terminator Throttle Body Fuel Injection systems in a bolt-on system for GM’s popular LS engines! These systems are designed specifically for LS engines with carbureted style intake manifolds. All kits include the popular Terminator EFI Throttle Body for fuel delivery into the intake plenum, as well as the necessary wiring to plug directly into the factory LS coil sub-harnesses and factory sensors.

Part Number Comparison

  • 550-409: GM LS1/LS6 & 1999-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor
  • 550-410: GM LS1/LS6 & 1999-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor
  • 550-421: GM LS1/LS6 & 1999-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor - with Transmission Control
  • 550-422: GM LS1/LS6 & 1999-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor - with Transmission Control
  • 550-423: GM LS2/LS3 & 2007-Current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor
  • 550-424: GM LS2/LS3 & 2007-Current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor
  • 550-426: GM LS2/LS3 & 2007-Current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor - with Transmission Control

*Note: Mid-Year change on '07 Truck Engines!  Identify crank wheel as follows:

  • Engines with 24-tooth wheels will have a BLACK crank sensor connector on the engine
  • Engines with 58-tooth wheels will have a GRAY crank sensor connector on the engine

Available With Transmission Control

Most GM vehicles built with the engines listed above were shipped with an electronically-controlled transmission. If you are using any pre-2009 4L60E/4L80E transmission then you're in luck--there's a Terminator LS TBI System that provides you with complete transmission control. Harness included. Have a 2009+ 4L60E? Contact us--we may be able to accommodate you.

Not Sure? Review this product documentation before you buy!

 
Owners Manual
Holley Terminator GM LS TBI Fuel Injection System

ECU
Boost ControlYes (Additional Hardware Required)
DIS OutputsNone (But can be added.)
FamilyTerminator
Fueling StrategySpeed Density, Alpha-N, or combination
Includes Power HarnessYes
Injector DriversFour
Internal Datalogging4GB
Nitrous ControlYes (Additional Hardware Required)
Number of Cylinders8
User Configurable I/OYes
User-Selectable MAP StorageTransmission-Control Version Only
Water-Methanol ControlYes (Additional Hardware Required)
Displays And Controllers
Auto BrightnessNo
CAN Bus CapableYes (Specific to Holley ECUs Only)
Case/Bezel FinishBlack
ConfigurableMonitor dozens of pre-configured metrics provided by the ECU, including sensors, air/fuel ratio, switched outputs, drive-by-wire data, and more.
Data LoggingYes
Display TypeLCD
FunctionsSetup, Monitor, Tuning
Gauge/Display Size3.5 Inch Rectangular
Internal StorageYes (SD Card)
TouchscreenYes
Throttle Bodies
Airflow Rate (CFM)950 CFM
Barrels (BBL)4
Gaskets IncludedYes
IAC Motor IncludedYes
Injectors IncludedYes
StyleThrottle Body Injection
Throttle Bore Diameter (ea)44.45mm
TPS Sensor IncludedYes
Fuel Injectors
Flow Rate (Lbs / Hr)80 PPH
Harnesses
Harness TypePower Harness, Main Harness, TBI Injector Sub-Harness, I/O Harness
TerminatedYes
Crank Timing
Sensor Harness IncludedYes
Sensors
Type1 BAR MAP, Throttle Position (Integrated in TB); Coolant Temperature, Wideband O2 and Air Temperature Sensor; Fuel Pressure Sensor optional, not included
General
Also Included40-Amp Relay. Many features of the Holley HP and Dominator ECU are accessible by the includedl 3.5" LCD Touchscreen Handheld Display
ApplicationGM LS1, LS2, LS3 and LS6 Engines, as well as 1999+ 4.8L, 5.3L, and 6.0L Truck Engines with 24- or 58-tooth Crank Wheel
ColorPolished or Hard Core Gray
Emission Code3
Unit of SaleKit

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Terminator LS Throttle Body Injection EFI System

  • Views: 1044
  • Brand: Holley
  • Product Code: 550-409 | 550-410 | 550-421 | 550-422 | 550-423 | 550-424
  • Availability: In Stock
  • $2,613.95
  • $2,351.95

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