L33

[Editor’s Note: This L33 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 L33 is a 5.3L, Gen. 3 small block engine used in GM trucks between 2005 and 2007. Although it is a truck engine, it used cylinder heads closely related to the […]