Engine Building

Learn how to read GM Ecotec valve spring specifications, including installed height, seat pressure, open pressure, spring rate, coil bind, mechanical travel and the critical difference between mechanical lift and...

Learn how GM Ecotec valve springs control the valves, roller finger followers and high-RPM valvetrain, and how spring pressure, installed height, camshaft lift, spring rate and coil bind affect performance.

The complete BK Racing guide to GM Ecotec valve springs. Learn how installed height, seat and open pressure, spring rate, coil bind, camshaft lift and RPM affect valvetrain control in...

Oil pressure that drops during long corners is one of the earliest warning signs of oil starvation in a GM Ecotec engine. Learn why it happens, how oil moves away...

Oil starvation is one of the leading causes of catastrophic engine failure in high-performance GM Ecotec engines. This comprehensive guide explains how the Ecotec lubrication system works, why oil pressure...

When an Ecotec oil pickup uncovers, the oil pump begins drawing air instead of a continuous supply of oil. Learn how this causes oil pressure loss, bearing damage, and catastrophic...