By Doug Kaufman
Editor
ENGINE BUILDER Magazine

When you’re building a performance engine, there are many, many variables you must take into consideration when determining which processes and components are appropriate. Which piston, which type of oil system, which power adders are needed – all of these questions must be answered before you get the results you want.

One question you shouldn’t have to answer, however, is “How much performance can I add by porting my cylinder heads before installation,” say cylinder head experts. Because increasingly, the time and effort you will spend on hand porting cylinder heads will likely be wasted next to today’s wide variety of out-of-the-box cylinder heads and the technological advances they contain from the manufacturer.

World Product’s lead design engineer is shown working on the design of a cylinder head. According to the company, World employs contemporary 3D modeling technology to not only design the part, but also the tooling to make it. Needless to s...