Manley 11675-1 - Valve - Exhaust, Valve-LS1 S/D 1.575
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Description
Description
Manley 11675-1 - Valve - Exhaust, Valve-LS1 S/D 1.575
Manley Valve - Exhaust, Valve-LS1 S/D 1.575
Head Diameter: 1.575 in. - Stem Diameter: .3136 in. - O/A : 4.923
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.
- Proven fatigue strength for extreme performance
- Chrome stems and hard tips enhance durability
- Exotic alloys for superior tensile strength, reliability, and longevity
- Swirl polishing and machined faces improved airflow/optimized efficiency
