Assuming a properly tuned engine, there are three factors that contribute to poor streetability: long cam duration, high compression ratios, and excessive cruise rpm. Since cam selection is largely ...

Volume close volume The amount of space occupied by a 3D shape, measured in cubic units such as cm³, mm³, and m³. May also be referred to as capacity. is measured in cubic units such as cm³ or m³. The ...

With the combustion chamber being the root of all horsepower, it only makes sense that you start spec'ing an engine build there. One of the key variables in engine building is compression ratio, or ...

As gearheads, we love to remember numbers. Many can probably rattle off all sorts of specs from various cars and engines. Cubic inches, rearend ratios, and camshaft lift specs are a lot of the common ...

You'd think that the pistons listed for a 10.5:1 compression ratio would actually give you 10.5:1. But it's usually not that simple. Perhaps that's why so many four-wheelers have a foggy or incomplete ...