The GM LS engine has redefined small-block V-8 performance. It's the standard powerplant in many GM cars and trucks and it has been installed in a variety of muscle cars, hot rods, and specialty cars to become the undisputed sales leader of crate engines. The aftermarket has fully embraced the GM Gen IV LS engine platform offering a massive range of heads, intakes, pistons, rods, crankshafts, exhaust, and other parts. Seasoned journalist and respected author Richard Holdener reveals effective, popular, and powerful equipment packages for the Gen IV LS engine. With this information, you can select the parts to build a powerful and reliable engine by removing the research time and guesswork to buy a performance package of your own. In this book, performance packages for high-performance street, drag race, and other applications are covered. And then the assembled engine packages are dyno tested to verify that the parts produce the desired and targeted performance increases. This comprehensive build-up guide covers intakes, throttle bodies, manifolds, heads and camshafts, headers and exhaust, engine controls, superchargers and turbochargers, and nitrous oxide.With so many parts available from a myriad of aftermarket companies, it's easy to become confused by the choices. This book shows you a solid selection process for assembling a powerful engine package, shows popular packages, and then demonstrates the dyno results of these packages. As such, this is an indispensible resource for anyone building GM LS Gen IV engine.