{"product_id":"manley-ford-429-boss-exhaust-valve-kit-1-900in-head-diameter-5-650in-overall-length-0-3715in-stem","title":"Manley Race Series Exhaust Valves – Ford 429 Boss | 1.900\" Head","description":"\u003cp\u003eThis Race Series exhaust valve listing is organized specifically for Ford 429 Boss, with the available dimensions presented as selectable configurations for easier cylinder-head planning. The parent listing is distinguished by \u003cstrong\u003e1.900\"; Head\u003c\/strong\u003e, which should be cross-checked against the rest of the engine combination.\u003c\/p\u003e\u003cp\u003eIf the Ford 429 Boss cylinder head has been ported, fitted with oversized seats, or changed from its original valvetrain layout, confirm the required valve measurements after machining rather than using a stock-size assumption.\u003c\/p\u003e\u003ch3\u003eKey Product Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Ford 429 Boss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManley Series:\u003c\/strong\u003e Race Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Position:\u003c\/strong\u003e Exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitle Specification:\u003c\/strong\u003e 1.900\"; Head\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 11787-8\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\u003eBefore purchase, compare the selected valve dimensions with your head manufacturer or engine builder’s specification, including stem diameter, valve length, seat diameter, and keeper arrangement.\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":50207060951290,"sku":"MAN11787-8","price":188.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/1ecc177028ebb28898eba0253019ba05L_f518fbc5-0367-4bc3-807d-154e1e848ca5.jpg?v=1787802643","url":"https:\/\/lgcracing.com\/products\/manley-ford-429-boss-exhaust-valve-kit-1-900in-head-diameter-5-650in-overall-length-0-3715in-stem","provider":"Legacy Racing","version":"1.0","type":"link"}