{"product_id":"t14-106592-manley-chevy-ls-1-ls-2-ls-6-head-small-block-severe-duty-pro-flo-hollo","title":"Manley Chevy LS-1\/LS-2 (LS-6) Head Small Block Severe Duty\/Pro Flo Hollow Intake Valves (Set of 8)","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.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46865558503623,"sku":"man11682H-8","price":694.19,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0796\/3587\/3991\/files\/a5ecd539fb6752bf9ef0389362bbf751_386142b4-f993-4846-a4f1-6716f91cdfc2.jpg?v=1784747165","url":"https:\/\/www.fullsendparts.com\/products\/t14-106592-manley-chevy-ls-1-ls-2-ls-6-head-small-block-severe-duty-pro-flo-hollo","provider":"Full Send Parts","version":"1.0","type":"link"}