{"product_id":"promaxx-cnc-head-ford-240-300","title":"Promaxx CNC Head - Ford 240\/300","description":"\u003cp\u003e\u003cspan\u003eProMAXX Performance Products CNC ported big valve heads available for the Ford big six.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe heads are based on a new designed thicker EFI style casting.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe combustion chambers are unshrouded to 73 cc using CNC machining.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBoth the intake and exhaust have hard valve seats installed.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe valves are stainless steel 4.910\" long 1.94\" intake and 1.60\" exhaust.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe head comes assembled with PAC valves springs good to .575 lift.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf you need a different spring for a different application it can be substituted for the difference in spring cost.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe rocker towers are \u003c\/span\u003e\u003cspan\u003emachined, drilled and tapped for 7\/16\" rocker studs (studs included).\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe intake flows\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e218 cfm @ .500\"\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e225 cfm @ .600\"\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"DFW Speed Syndicate ","offers":[{"title":"Default Title","offer_id":47704673321065,"sku":null,"price":1850.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/1256\/7401\/files\/PMaxx1.jpg?v=1781716045","url":"https:\/\/www.dfwspeedsyndicate.com\/products\/promaxx-cnc-head-ford-240-300","provider":"DFW Speed Syndicate ","version":"1.0","type":"link"}