{"product_id":"manley-pontiac-400-428-455-1-770-race-master-exhaust-valves-set-of-8","title":"Manley Race Master Exhaust Valves – Pontiac 400 - 428 - 455 1.770","description":"\u003cp\u003eEngine builders working with Pontiac 400 - 428 - 455 1.770 can use this Race Master exhaust valve family to choose the required valve dimensions while staying within the correct Manley application group. 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\u003eThe correct Pontiac 400 - 428 - 455 1.770 valve is the one that matches the finished head. Stem clearance, seat contact, installed height, spring package, and keeper location should all be checked during assembly.\u003c\/p\u003e\u003ch3\u003eKey Product Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Pontiac 400 - 428 - 455 1.770\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManley Series:\u003c\/strong\u003e Race Master\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Position:\u003c\/strong\u003e Exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family Detail:\u003c\/strong\u003e Race Series application focus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 11355-8\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\u003eConfirm head diameter, overall length, stem diameter, keeper\/groove style, seat compatibility, and installed-height requirements with your cylinder-head specification before ordering.\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":50184551989498,"sku":"MAN11355-8","price":188.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/72d30868f20b252dc91efd1c08cf3bc8L_b330bcf6-5473-4499-bc5b-b39998dde2a2.jpg?v=1787802159","url":"https:\/\/lgcracing.com\/products\/manley-pontiac-400-428-455-1-770-race-master-exhaust-valves-set-of-8","provider":"Legacy Racing","version":"1.0","type":"link"}