featured Ecotec Exhaust Valve Size Guide: Stock Diameter, Stem Size & Applications
GM Ecotec exhaust valve size guide covering stock diameter, stem size and common L61, LAP, LE5, LE9, LSJ and LNF applications. Compare OEM and performance valve sizing and learn why...
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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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Fitting the BK Racing Ecotec Long Tube Header in a J-Body
Can a true long tube header fit a Chevrolet Cavalier or Pontiac Sunfire? The answer surprises many Ecotec enthusiasts. From engine mount positioning and tunnel clearance to thermostat housing modifications,...
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