{"product_id":"manley-chevy-l83-53l-1930in-head-diameter-pro-flosevere-duty-intake-valves-set-of-8-205652-t14","title":"Manley Chevy L83 5.3L 1.930in Head Diameter Pro Flo\/Severe Duty Intake Valves (Set of 8)","description":"\u003ch3\u003e\u003cstrong\u003eManufacturer Part # : 12358-8\u003c\/strong\u003e\u003c\/h3\u003e\u003cbr\u003e\u003ch2\u003eMarket Description\u003c\/h2\u003e\n\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\n\n\u003ch2\u003eProduct Description - Short\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eManley Chevy L83 5.3L 1.930in Head Diameter Pro Flo\/Severe Duty Intake Valves (Set of 8)\u003c\/li\u003e\n  \u003cli\u003eValve - Intake\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eLabel Description\u003c\/h2\u003e\n\u003cp\u003eS\/D Chevy 5.3L L83 Int. Vlv Kt-1.930 in. Dia.,5.232 in. O\/A ,.3133 in. Stm\u003c\/p\u003e\n\n\u003ch2\u003eFeatures and Benefits\u003c\/h2\u003e\n\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\n\n\u003ch2\u003eAssociated Comments\u003c\/h2\u003e\n\u003cp\u003eManley Valve - Intake, Valve-P\/F L83 5.3L 1.930, .3133 STEM.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Description - Long\u003c\/h2\u003e\n\u003cp\u003eManley Valve - Intake, Valve-P\/F L83 5.3L 1.930, .3133 STEM\u003c\/p\u003e\n\n\u003ch2\u003eProduct Description - Extended\u003c\/h2\u003e\n\u003cp\u003eManley Valve - Intake, Valve-P\/F L83 53L 1.930, .3133 STEM\u003c\/p\u003e\n\n\u003ch2\u003eProduct Description - Invoice\u003c\/h2\u003e\n\u003cp\u003eValve-P\/F L83 5.3L 1.930, .3133 STEM\u003c\/p\u003e\n\n\u003ch2\u003eAAIA Part Type Description\u003c\/h2\u003e\n\u003cp\u003eEngine Intake Valve\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":47189632614538,"sku":"T14.205652","price":544.0,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/4599\/4122\/files\/5f4b70fa0b8a870e0877005e4b8d1853_5c0eb94a-2a77-4933-ad6d-1c20c8164a36.jpg?v=1760710003","url":"https:\/\/qjipdu-tf.myshopify.com\/products\/manley-chevy-l83-53l-1930in-head-diameter-pro-flosevere-duty-intake-valves-set-of-8-205652-t14","provider":"SBX Performance","version":"1.0","type":"link"}