GM LS-Series Products

GM unleashed the LS series of small block engines in 1998 in the Corvette. It was 5.7 L, and all aluminum with performance surpassing all the earlier Chevroled small blocks. They dubbed it the LS-1. In 1999 GM followed up the LS-1 with a series of different sized and specification LS engines for trucks and other performance applications. These were primarily iron block versions with Aluminum heads, and various intake and exhaust manifolds. Some variations have cable operated throttle bodies, and some were drive by wire with an electronic throttle pedal. From 1999 to 2006, all the engines used a similar ECM and a 24X, crankshaft mounted timing wheel. Since 2007 all LS engines use a different ECM with a 58X timing wheel on the crankshaft. All these engines are drive by wire. These third generation LS engine's from Chevrolet offer power, performance, and the latest technology, and have become a wildly popular choice for hobbyists and car builders. Bolting one of these engines into your favorite street rod, muscle car or off-road vehicle may be easy, but many owners are reluctant to tackle the complexities of wiring. 

One of the keys to a straightforward installation of these Bowtie engines is a high quality custom harness from Howell Engine Developments. These engine specific harnesses feature all the correct connectors to make hooking up the electronic engine and transmission controls as easy as plugging in the required connectors. In fact, only four basic wires are required to connect our harness to your chassis to get up and running. Every connector is clearly labeled so there is no need to go searching for the right plug. 

Howell LS series wiring harnesses are as sophisticated as they are easy to install, providing fully functioning drive-by-wire or cable throttle control, and engine diagnostic capabilities right down to standard GM code output. An industry standard diagnostic port and check engine light are pre-wired into every system, making it compatible with all Chevrolet dealer and aftermarket diagnostic tools. The compact engine controller (ECM) can be placed underhood or inside the vehicle and can be easily mounted. 

Howell harnesses utilize GM/Packard high temperature wire, original equipment Packard Weatherpack connectors, and high temperature covering to ensure the highest standard of reliability and a clean look under the hood.