The GM LS Series V8s are the most popular engines in the aftermarket. Choosing the best cylinder head is key to making any LS engine project perform to its highest potential.This book compares readily available factory and aftermarket cylinder heads and delivers the facts about each including dimensions airflow rates interchangeability compression ratios applications and performance characteristics.Whether youre a budget enthusiast looking for the best possible factory head for your specific combination an engine swapper looking to modernize your vintage muscle car or a racer looking for the best-flowing head out there this guide is essential for accomplishing your goals.Book Specs:Pages: 144Size: 8.