{"product_id":"manley-big-block-chevy-2-350in-diameter-0-350in-longer-length-extreme-duty-exhaust-valves-single","title":"Manley Big Block Chevy 2.350in Diameter 0.350in Longer Length Extreme Duty Exhaust Valves - Single","description":"\u003cp\u003eManley 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.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSwirl polishing and machined faces improved airflow\/optimized efficiency\u003c\/li\u003e\n\u003cli\u003eExotic alloys for superior tensile strength, reliability, and longevity\u003c\/li\u003e\n\u003cli\u003eProven fatigue strength for extreme performance\u003c\/li\u003e\n\u003cli\u003eChrome stems and hard tips enhance durability\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":47282133172411,"sku":"MAN11880-1","price":38.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0659\/3249\/2987\/files\/53486a838b36cd9095e68ae770cd2598_07833fcf-ae1c-4b05-9235-25bdf52334f7.jpg?v=1765638992","url":"https:\/\/hurreysoffroad.com\/products\/manley-big-block-chevy-2-350in-diameter-0-350in-longer-length-extreme-duty-exhaust-valves-single","provider":"Hurreys Performance","version":"1.0","type":"link"}