{"product_id":"manley-12363-8-exhaust-valve-kit-extreme-duty-series-1-560-head-dia-5-208-o-a-length-0-3136-stem-for-chevrolet-5-3l-l83","title":"MANLEY 12363-8 Exhaust Valve Kit Extreme Duty Series (1.560\" Head Dia., 5.208\" O\/A Length, 0.3136\" Stem) for CHEVROLET 5.3L L83","description":"\u003ch2\u003eDescription MANLEY 12363-8 Exhaust Valve Kit Extreme Duty Series (1.560\" Head Dia., 5.208\" O\/A Length, 0.3136\" Stem) for CHEVROLET 5.3L L83\u003c\/h2\u003e\u003cp\u003eManley Performance Products Extreme Duty Series Valves are engineered for the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDesigned for applications requiring extreme force and heat resistance, including Top Fuel, Funny Car, and marine engine applications\u003c\/li\u003e \u003cli\u003eXH-432 XtremeAlloy exhaust valve material construction\u003c\/li\u003e \u003cli\u003eChrome stems and hard tips for longevity and wear resistance\u003c\/li\u003e \u003cli\u003eSwirl-polished underhead areas and fully machined combustion faces improve airflow and combustion efficiency\u003c\/li\u003e \u003c\/ul\u003e\u003ch3\u003eSpecifications:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eProduct Market: Domestic\u003c\/li\u003e \u003cli\u003eHead Diameter: 1.560 IN\u003c\/li\u003e \u003cli\u003eStem Diameter: 0.3136 IN\u003c\/li\u003e \u003cli\u003eValve Stem Diameter: 0.3136 IN\u003c\/li\u003e \u003cli\u003eO\/A Length: 5.208 IN\u003c\/li\u003e \u003cli\u003eTip Length: 0.160 IN\u003c\/li\u003e \u003cli\u003eMargin Width: 0.065 IN\u003c\/li\u003e \u003cli\u003eSeat Width: 0.110 IN\u003c\/li\u003e \u003cli\u003eTop of Head: 18 Degree Dish\u003c\/li\u003e \u003cli\u003eUnderhead Angle: 25.00 DEG\u003c\/li\u003e \u003cli\u003eEmissions Code: 3\u003c\/li\u003e \u003cli\u003eValve Series: Extreme Duty Series\u003c\/li\u003e \u003cli\u003eValve Material: Inconel\u003c\/li\u003e \u003cli\u003eValve Type: Exhaust\u003c\/li\u003e \u003cli\u003eProduct Type: Engine Exhaust Valve Kit\u003c\/li\u003e \u003cli\u003eValve Quantity: 8\u003c\/li\u003e \u003c\/ul\u003e","brand":"MANLEY","offers":[{"title":"Default Title","offer_id":43410603901108,"sku":"12363-8","price":790.71,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/image-coming-soon_8beb1a79-886b-4864-b91a-8a30ba2394a0.png?v=1786624858","url":"https:\/\/atomic-shop.eu\/products\/manley-12363-8-exhaust-valve-kit-extreme-duty-series-1-560-head-dia-5-208-o-a-length-0-3136-stem-for-chevrolet-5-3l-l83","provider":"ATOMIC-SHOP Performance Parts \u0026 Motorsport Equipment - EU","version":"1.0","type":"link"}