Engine Building

Why does cylinder wall thickness matter in a GM Ecotec engine? Learn how bore size affects cylinder strength, ring seal, heat transfer, and long-term durability. Discover why experienced engine builders...

Can a damaged GM Ecotec engine block be repaired? Learn how cylinder sleeves restore scored, cracked, and worn cylinders, when a block can be saved, and when replacement is the...

How much horsepower can stock GM Ecotec sleeves really handle? Discover why there’s no magic horsepower limit, what actually causes sleeve failure, and when upgrading to performance sleeves becomes the...

What’s the difference between dry sleeves and wet sleeves? Learn why GM designed every Ecotec engine around a dry sleeve architecture and how cylinder stability, ring seal, heat transfer, and...

Choosing the right bore size is one of the most important decisions when building a GM Ecotec engine. This guide compares 88mm through 92mm bore sizes, explains how bore diameter...

Installing GM Ecotec cylinder sleeves requires precision machining, proper interference fit, accurate boring, and torque plate honing. Learn the complete installation process, common mistakes, and professional engine building practices.