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Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.540in O/A Length, 0.3110in Stem - Main Product View
Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.540in O/A Length, 0.3110in Stem - Side View
Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.540in O/A Length, 0.3110in Stem - Back View
Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.540in O/A Length, 0.3110in Stem - Installation View
Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.540in O/A Length, 0.3110in Stem - Additional View 5
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Manley Performance Exhaust Valve Kit - 1.625in Head Dia. 5.540in O/A Length, 0.3110in Stem fits Chevrolet Small Block

Manley Performance
11397-8
Special Order: Contact us to check stock and shipping lead times! Use LIVE HELP or call (724) 479-5480
$401.42 USD $301.99 USD
$301.99 USD
Manley Performance Exhaust Valve Kit - 1.625in Head Dia. 5.540in O/A Length, 0.3110in Stem fits Chevrolet Small Block
Description
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.
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