The Chevy & GM LS1 engine is a 5.7L small-block V8 engine produced from 1997 until 2004. The LS1 is part of the "Gen III" small-block V8 engine family which also includes the LS6 as well as the 4.8, 5.3, and 6.0 Vortec engines. It's the successor to the 5.7L Gen II LT1 engine which produced up to 305hp and 340lb-ft. of torque. While the LS1 shares the same displacement, … [Read more...] about The 5 Most Common GM LS1 Engine Problems