David Vizards How to Por t Cylinder Heads

David Vizard's How to Port and Flow Test Cylinder Heads is the definitive technical manual for engine builders, machine shop professionals, and serious enthusiasts seeking to unlock maximum performance through cylinder head optimization. Written by renowned automotive engineer David Vizard, this 160-page paperback guide combines proven methodology with practical instruction, making it an essential reference for anyone looking to improve air flow, combustion efficiency, and overall engine power. Whether you're preparing heads for a street engine, competition build, or high-performance restoration, this resource delivers the knowledge required to execute porting work with precision and confidence.

The manual covers critical technical principles including flow bench testing procedures, port design fundamentals, valve seat optimization, and combustion chamber analysis. Vizard's methodology emphasizes measured, data-driven approaches rather than guesswork, enabling builders to identify bottlenecks in cylinder head design and execute targeted modifications that yield measurable performance gains. The book details specific porting techniques, explains how to interpret flow numbers, and provides guidance on selecting appropriate tools and equipment for professional-quality results. Detailed illustrations and step-by-step explanations make complex concepts accessible, whether you're using a flow bench or performing baseline testing before and after modifications.

This book is indispensable for machine shop operators, engine builders working on domestic and import platforms, and dedicated DIY builders committed to maximizing cylinder head potential. Real-world applications span small-block Chevrolet, Ford, and Mopar engines as well as other platforms where port design directly impacts horsepower, torque delivery, and throttle response. The comprehensive approach ensures relevance across carburetor, fuel-injection, and forced-induction applications, making it a timeless reference that pays dividends on every porting project undertaken. The compact 8.5 x 11-inch format stores easily in the shop or technical library and serves as a trusted desk reference during head preparation and flow testing work.