{"product_id":"manley-chevrolet-ls-1-ls-2-4-923in-pro-flo-extreme-duty-exhaust-valves-set-of-8","title":"Manley Extreme Duty Pro Flo Exhaust Valves – Chevrolet LS1\/LS2 4.923\" \/","description":"\u003cp\u003eManley packages these Extreme Duty Pro Flo exhaust valves for Chevrolet LS1\/LS2 4.923\"; \/ around the measurements that matter during cylinder-head setup, rather than treating every valve size as a separate shopping path. Use the exact Manley part number shown below to distinguish this product from similar valves offered for the same or related engine family.\u003c\/p\u003e\u003cp\u003eFor Chevrolet LS1\/LS2 4.923\"; \/, valve diameter changes can alter seat work and chamber\/shrouding relationships, while alternate overall lengths can change installed height and rocker geometry.\u003c\/p\u003e\u003ch3\u003eKey Product Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Chevrolet LS1\/LS2 4.923\"; \/\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManley Series:\u003c\/strong\u003e Extreme Duty Pro Flo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Position:\u003c\/strong\u003e Exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 11681-8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Quantity\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSet of 8 valves.\u003c\/strong\u003e The selected configuration is supplied as a 8-piece valve package. This quantity applies to the selected Manley SKU family shown on this product page.\u003c\/p\u003e\u003ch3\u003eSelection \u0026amp; Fitment Notes\u003c\/h3\u003e\u003cp\u003eValve fitment should be verified from the cylinder head itself; check the required head size, stem size, overall length, seat work, and valvetrain geometry rather than relying on engine name alone.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProfessional engine assembly and measurement are recommended. Product specifications should be confirmed against the selected Manley part number and the requirements of the exact engine build.\u003c\/em\u003e\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":50207062130938,"sku":"MAN11681-8","price":514.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/fec5f7dba71aff461c53f7b003c4211fL_d3c46896-1462-476c-ba01-d5c59ea1aef0.jpg?v=1787802539","url":"https:\/\/lgcracing.com\/products\/manley-chevrolet-ls-1-ls-2-4-923in-pro-flo-extreme-duty-exhaust-valves-set-of-8","provider":"Legacy Racing","version":"1.0","type":"link"}