{"product_id":"manley-chevrolet-big-block-2-300-head-3415-stem-350-longer-severe-duty-valves-set-of-8","title":"Manley Severe Duty Performance Valves – Chevrolet Big Block 2.300 Head, .3415 Stem, .350 Longer Valves (Set of 8)","description":"\u003cp\u003eBuilt around the requirements of Chevrolet Big Block 2.300 Head, .3415 Stem, .350 Longer Valves (Set of 8), this Severe Duty Performance Valves valve valve family gives engine builders a focused way to select the dimensions their cylinder-head combination calls for. 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 Big Block 2.300 Head, .3415 Stem, .350 Longer Valves (Set of 8), 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 Big Block 2.300 Head, .3415 Stem, .350 Longer Valves (Set of 8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManley Series:\u003c\/strong\u003e Severe Duty Performance Valves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Position:\u003c\/strong\u003e valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family Detail:\u003c\/strong\u003e Severe Duty application focus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 11878-8\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\u003eUse the finished cylinder-head setup as the authority for selection. Oversize valves or alternate lengths may require machining and can affect installed height and valvetrain geometry.\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":50194895732986,"sku":"MAN11878-8","price":311.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/5f4b70fa0b8a870e0877005e4b8d1853_f4f73626-f5d9-4056-afe7-29e8ae0bb928.jpg?v=1787978905","url":"https:\/\/lgcracing.com\/products\/manley-chevrolet-big-block-2-300-head-3415-stem-350-longer-severe-duty-valves-set-of-8","provider":"Legacy Racing","version":"1.0","type":"link"}