LS Engines

The LY2 is a 4.8L iron-block Gen. III engine that was introduced in 2007. It replaced the LR4 as the Vortec 4800. It was available in GM pickups, vans, and SUVs until […]

Editor’s Note: This L9H engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at […]

The L9H is a 6.2L, Gen. 4, small block engine used in GM luxury trucks and SUVs between 2009 and 2013. For marketing purposes, it was also known as the […]

[Editor’s Note: This LMF engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. […]

The LMF engine is a 5.3L Gen. IV iron-block engine used in GM cargo vans between 2010 and 2014. For marketing purposes, it was also known as the Vortec 5300. […]

[Editor’s Note: This LR4 engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. […]

The LR4 is a 4.8L iron block truck engine that was introduced in 1999. Along with the LM7 and LQ4, they were the first LS truck engines. The LR4 was available […]

Intro to the LH6 Engines The LH6 came in GM trucks and SUVs in 2005-09 and made 315 horsepower right out of the box. It’s a Gen. 4 5.3L aluminum-block engine, […]

The LH6 engine is a 5.3L Gen. IV aluminum engine that replaced the LM4 in 2005. It was the first Gen. IV LS truck engine and offered Active Fuel Management […]

[Editor’s Note: This LFA engine upgrade guide is the second in a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing. The LFA engine […]