Howell EFI is pleased to introduce their new 2016 LT1 Camaro, 2014 – 2016 LT1 Corvette, and 2015 – 2016 LT4 Corvette harnesses, as well as its Ecotec3 truck versions for the 2014 – 2016 4.3L, 5.3L and 6.2L GM Gen V engines. For ease of installation, relays are included, wires are clearly labeled and terminated, and one ground serves the entire system. Harnesses also include 6L80/6L90 transmission functionality making the installation of these engines and transmissions as easy as possible.
Each new harness also features its own fuse block and a GM diagnostic connector. This allows customers to have their vehicles easily diagnosed and serviced at any repair facility utilizing the common OBD II port. Installation requires just three points of power at the battery, ignition, and fuel pump making these harnesses truly plug-and-play. Harnesses are prepared to customer specifications, not a one size fits all approach, and each incorporates a rugged nylon or OEM style plastic covering and glued shrink tube.
Howell EFI provides more vehicle coverage for these engines families at better prices than any other harness maker in the industry. With the ability to put an LT1, LT4, or Ecotec3 engine into basically anything you want, these new engines are sure to become very popular swap options. Each harness is proudly made in the USA with a Lifetime Guarantee.
Look to Howell EFI to make it happen with ease.
2014-2016 LT1 Corvette Harness Designs
- #HY625846 – Manual Trans. – $900.00
- #HY625846T – 6L80/90 Trans. – $1,000.00
- #HY625846E – $450.00 without ECM core trade-in
- #HY625846EC – $275.00 with ECM core trade-in
2016 LT1 Camaro Harness Designs
- #HF625846- Manual Trans. – $900.00
- #HF625846T – 6L80/90 Trans. – $1,000.00
- #HF625846E – $450.00 without ECM core trade-in
- #HF625846EC – $275.00 with ECM core trade-in
2015-2016 LT4 Corvette Harness Designs 6.2L Supercharged
- #HY625846S – Manual Trans. – $900.00
- #HY625846ST – 6L80/90 Trans. – $1,000.00
- #HY625846SE – $450.00 without ECM core trade-in
- #HY625846SEC – $275.00 with ECM core trade-in
2014-2016 4.3L LV3-C-Truck Harness Design
- #HVL435846 – Manual Trans. – $800.00
- #HVL435846T – 6L80/90 Trans. – $900.00
- #HVL435846E – $450.00 without ECM core trade-in
- #HVL435846EC – $275.00 with ECM core trade-in
2014-2016 5.3L L83-C-Truck Harness Design
- #HVL535846 – Manual Trans. – $800.00
- #HVL535846T – 6L80/90 Trans. – $900.00
- #HVL535846E – $450.00 without ECM core trade-in
- #HVL535846EC – $275.00 with ECM core trade-in
2014-2016 6.2L L86 C-Truck Harness Designs
- #HVL625846 – Manual Trans. – $800.00
- #HVL625846T – 6L80/90 Trans. – $900.00
- #HVL625846E – $450.00 without ECM core trade-in
- #HVL625846EC – $275.00 with ECM core trade-in
ADD $100.00 to harnesses requiring emission connections
ABOUT HOWELL EFI
At Howell EFI, we choose to sell only the best quality components and all are covered by a money back guarantee. For additional information visit www.howellefi.com or call 810-765-5100. Howell EFI is located at 6201 Industrial Way, Marine City, MI 48039
To learn more or to order your conversion kit or harness contact Howell EFI at www.howellefi.com or call (810) 765-5100.
#HVL625846T 2014+ EcoTec3 6.2L V8 Truck Wiring Harness (6L80/90 Transmission$900.00
#HVL625846 2014+ EcoTec3 6.2L V8 L86-C Truck Wiring Harness (Manual Transmission)$800.00
#HVL535846T 2014+ EcoTec3 5.3L V8 L83-C Truck Wiring Harness (6L80/90 Trans)$900.00
#HVL535846 2014+ EcoTec3 5.3L V8 L83-C Truck Wiring Harness (Manual Transmission)$800.00
#HVL435846T 2014+ EcoTec3 4.3L V6 LV3-C truck wiring harness (6L80/90 transmission)$900.00
#HVL435846 2014+ EcoTec3 4.3L V6 LV3-C Truck Harness (Manual Transmission)$800.00
#HY625846ST 2015+ Corvette Supercharged LT4 Harness w/6L80/90 Automatic Transmission$1,000.00
#HY625846S 2015+ Corvette Supercharged LT4 Harness w/Manual Transmission$900.00
#HF625846T 2016+ LT1 Camaro Harness with 6L80/90 Automatic Transmission$1,000.00
Marine City, MI, (April 11, 2019) – 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. For more information, watch this video.
For more information about LT1 harness options and photos for download, visit here: https://howellefi.com/product-category/general-motors/gm-lt1-lt4-products-2014/
For more information about Howell LT4 harness options and photos to download, visit here: https://howellefi.com/?s=LT4+Harness&post_type=product
For more information about Howell EcoTec3 harness option and photos to download, visit here: https://howellefi.com/?s=EcoTec3+harness&post_type=product
While some EFI companies stake claims of superior products at rock bottom prices, well, there’s a reason people say you get what you pay for. When we say regardless of the engine transplant, Howell has you covered, we stand by that statement all day every day with the most complete kits on the market today that are custom designed to fit your needs. In fact, each and every kit comes with everything you need short of an air cleaner and include a money back guarantee.
Over recent months, we cannot count the number of tech calls we have received from people who purchased some of these other EFI systems on the market, ending up with problem after problem to the point they’ve asked around and been told, “You should have done it right the first time, just call Howell.”
We offer wide-ranging GM-style EFI conversions for many applications and harness conversions for any GM V6 and V8 engine from 1985 to present. For anyone not doing a complete carbureted to fuel injection conversion, we also cover the transplant segment with 30+ years of vehicle applications.
As an adjunct to our wiring harnesses, we developed complete throttle body and multi-port fuel injection systems. We combine proven GM electronic components, Howell wiring harnesses, two and four-barrel TBI and TPI units. These systems offer GM closed-loop fuel and spark control, and typical GM durability and fuel economy. With extensive development on both big-block (454/502 CID) and small block (350/400 CID) engines, these systems are attractive updates for hot rods, production carbureted vehicles, and off-road four-wheel drive vehicles seeking both performance and fuel economy.
So before you invest in an EFI or TBI kit you think looks promising (but typically has some hidden holes) call Howell first whether you are looking to do a TBI, TPI, MPI, CPI, LTI (90’s & current LT1), LS, Vortec, or EcoTec3 EFI conversion or engine transplant.
GM LS Series & Vortec Wiring Harnesses, Howell EFI Complete GM Based GM LT1/LT4 & Ecotec3 (2014+) GM Tuned Port, Central Port,
ECM’s, Products & Accessories Universal TBI Kits & Accessories. Wiring Harnesses, ECM’s, & Accesories & Early LT1 Wiring Harnesses