Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.340in O/A Length, 0.3415in Stem

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.Manley Valve - Intake, Valve-S/D 2.080,+400 Swirl polishing and machined faces improved airflow/optimized efficiency Exotic alloys for superior tensile strength, reliability, and longevity Proven fatigue strength for extreme performance Chrome stems and hard tips enhance durability Air Freight Prohibited: false Not Carb Approved: false Carb Acknowledgement Required: false Ltl Freight Required: false Prop 65: Y Part Type: automotive Epa: N/A Regular Stock: false Units Per Sku: 1