Manley 12355-8 - Chevy Small Block LS3/L99 (L92 Head) 1.6in Head Dia. Severe Duty Exhaust Valves (Set of 8)
DISCLAIMER: This Item Is Special Ordered, which may have cancellation or return restrictions. Please see our terms and conditions for more information.
Couldn't load pickup availability
Description
Description
Manley 12355-8 - Chevy Small Block LS3/L99 (L92 Head) 1.6in Head Dia. Severe Duty Exhaust Valves (Set of 8)
Manley Valve - Exhaust, Valve-L-92 S/D 1.600
Head Diameter: 1.600 in. - Stem Diameter: 0.3136 in. - O/A : 5.215 in.
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
