New from Howell – the LT/EcoTec3 Conversion Harnesses and Accessories for GM Direct Injection Swaps. These harnesses are great for anyone looking to swap these modern engines in any application. See more details below.
Howell EFI, long been known as a leader in EFI conversions since the late 1980’s beginning with GM TPI conversions, GM TBI conversions for Jeeps, and 90’s LT1 conversions now offers LT/EcoTec 3 conversion harnesses and accessories for GM direct injection swaps.
Over the past two decades Howell added the manufacture of conversion wiring harnesses and accessories for the ultra-popular LS/Vortec engine family. For the 2014 model year GM launched the direct injected LT1 Corvette engine, as well as the companion EcoTec3 engine powered GM pickup truck. As these LT/EcoTec3 vehicles and engines began to proliferate the scene and the scrapyards, Howell EFI began developing harnesses and parts for swapping the LT/EcoTec3 family of engines into other vehicles.
Howell now offers LT1/LT4 swap harnesses for 2014+ Camaro and Corvette direct injection and for direct injection for trucks with EcoTec3 L83, L86, and 4.3L V6 LV3-C truck engines. With Howell’s plug and play harnesses it is possible to transplant these powerful LT/EcoTec3 engines for Street Rod, Pro-Touring, Off-Road, Sand Rails, Street Machines and more.
The LT/EcoTec3 harnesses are made to customer specifications and include a fuse block and GM diagnostic connector for diagnosis and service at any repair facility utilizing the common OBD II port, in addition to a check engine light, electric fan control, and a complete stand-alone design to control engine functions. All Howell harnesses are Made in the USA and sold with a Lifetime Guarantee. Installation requires just three points of power at the battery, ignition, and fuel pump making these harnesses truly plug-and-play.
- Plug and play harness
- Made to customer specifications
- Includes a fuse block and GM diagnostic connector