featured Ecotec Valve Springs, Exhaust Valves & RPM: Building the Valvetrain as a System
Build a high-RPM Ecotec valvetrain as a complete system. Learn how valve springs, exhaust valves, lightweight retainers, solid lash and camshaft geometry work together for reliable valve control in racing...
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Do Performance Exhaust Valves Increase CFM? Ecotec Flow-Bench Testing
Do performance Ecotec exhaust valves actually increase airflow? See what BK Racing learned from back-to-back flow-bench testing, including how an intentionally undersized development valve gained 3 CFM over the stock...
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GM Ecotec Exhaust Valves: Stock vs Performance, Sizes, Materials & Fitment
The complete guide to GM Ecotec exhaust valves for L61, LAP, LE5, LE9, LSJ and LNF engines. Learn how OEM and performance exhaust valves differ in size, material, airflow, geometry...
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