L20 4.8L

[Editor’s Note: This L20 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 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 […]