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The Manley Severe Duty intake valve for Chevrolet big-block engines has a 2.190in head diameter, 5.218in overall length and a 0.3720in stem, offered as a rugged replacement for high-temperature engines. Manley employs NK-844 intake alloy, swirl-polished underheads and fully machined combustion faces, plus chrome stems and hard tips to enhance airflow and durability. The Severe Duty series demonstrates significantly improved fatigue resistance in testing.
Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem
