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The Manley Severe Duty exhaust valve for Chevrolet Big Block engines provides race-grade durability and high-temperature capability for demanding gasoline builds. Made from exclusive alloys with chrome stems, hard tips, swirl-polished underheads and fully machined combustion faces, these valves optimize airflow, combustion efficiency and wear resistance. Proven in aggressive fatigue testing, Manley exhaust valves deliver far greater cycle life than common competitive alloys.
Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem
