How to Build and Modify Gm Ls-Series Engines - Joseph Potak

GM's LS1 engine shook the performance world when it was introduced in the 1997 Corvette. It set a new precedent for massive power, light weight, and impressive fuel economy. Often referred to as the Generation III engine, it (and its most recent iteration, the Gen IV) is the high-water mark for performance V-8 engines. The latest version, the LS9, makes some 638 hp from just 6.2 liters, far eclipsing even the mightiest big-blocks from the muscle car era. And it does so while meeting modern emissions..