Engine Building

Understand Ecotec valve spring coil bind, mechanical travel, recommended maximum lift, coil-bind clearance, and why BK Racing advertises a conservative .520" operating limit instead of the system's measured mechanical capability.

Valve spring rate explains how quickly spring pressure increases as an Ecotec valve opens. Learn how rate affects open pressure, camshaft compatibility, high-RPM valve control, and usable spring travel.

Valve spring pressure depends on installed height. Learn how installed height affects Ecotec seat pressure, open pressure, spring travel, coil bind and high-lift camshaft compatibility.

Seat pressure and open pressure measure two different parts of an Ecotec valve spring's operating range. Learn why both matter when comparing springs for camshafts, high RPM, boost, and racing.

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...

Many racers believe adding more oil will eliminate oil starvation, but that's only part of the equation. Learn how oil capacity and oil control work together, why more oil doesn't...