Ferrea Competition Plus Hollow Stem 2.020" Intake Valves (Set of 8) - SB Chevy - 11/32" Stem Diameter - 5.010" Length 4101CSMBK and crush so badly they

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Ferrea Competition Plus Hollow Stem 2.020" Intake Valves (Set of 8) - SB Chevy - 11/32" Stem Diameter - 5.010" Length 4101CSMBK and crush so badly theyAn important factor to take into consideration to increase the engine's RPMs, is the valve train weight. Of course, the valve being a main component, the design has to be perfected to accomplish the weight reduction to allow higher RPMs. Ferrea's latest contribution to this area is the introduction of its Lightweight Hollow Stem Valve. We developed a manufacturing process that gun drills and micro polishes the stem to achieve a valve reduction in