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The Manley Severe Duty hollow intake valve for Chevrolet big-block engines has a 2.250in head diameter, 5.344in overall length and a 0.3110in stem, offering reduced weight for aggressive valve trains. Manley uses NK-844 intake alloy with swirl-polished underheads, fully machined combustion faces and chrome stems with hard tips to boost airflow and durability; the Severe Duty line is proven in fatigue testing to deliver extended service under extreme conditions.
Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3110in Stem
