Engine Building

Factory and performance cylinder sleeves are designed for different goals. Learn the differences in material, bore capability, cylinder stability, machining requirements, and when upgrading to performance sleeves makes sense for...

Learn the most common GM Ecotec cylinder sleeve installation mistakes and how proper machining, interference fit, deck resurfacing, torque plate honing, and precision assembly contribute to stronger, more reliable engine...

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...

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.

Just because your Ecotec can turn 8,000 RPM doesn’t mean it’s making power there. Valve float, valve bounce, weak valve springs, and hydraulic lash adjuster instability can quietly rob horsepower...