The L20 is a 4.8L Gen. IV iron block truck engine. It replaced the LY2 in 2010. It was upgraded with Variable Valve Timing (VVT) and Flex Fuel technology. It […]
The L76 is a 6.0L, Gen. 4, aluminum small block engine used in both GM cars and trucks from 2007 to 2009. This article is dedicated specifically to the truck and […]
The LS2 is a Gen. 4, 6.0L, aluminum small block engine. The engine specs and information listed here is for the stock LS2 used in GM passenger cars from 2005-2007. Mechanically similar, General […]
The LZ1 is a 6.0L, Gen. 4 small block engine used in GM hybrid trucks and SUVs between 2010 and 2013, replacing the LFA (2008-09) as the LS engine family’s […]
The L99 is a 6.2L, Gen. 4, small block engine used in the Chevy Camaro SS from 2010-2015. The information listed here is for a stock L99 engine. Mechanically similar, General […]
The L77 is a Gen. 4, 6.0L, aluminum small block engine used in GM cars between 2011 and 2017. The information listed here is for a stock L77 engine. Mechanically […]
The LY5 engine is a 5.3L Gen. IV iron-block engine used in GM trucks and SUVs between 2007 and 2009. For marketing purposes, it was also known as the Vortec […]
The LY6 engine is a 6.0L Gen. 4 small block engine used in GM trucks and SUVs between 2007 and 2010. For marketing purposes, it was also known as the […]
The LH8 is a 5.3L Gen. IV aluminum block engine truck engine that appeared in 2008-09 GM trucks, including the Hummer H3, Chevy Colorado, and GMC Canyon. The engine specs […]
[Editor’s Note: This L99 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 […]