{"product_id":"nor-11071040-pro1-ls-15-deg-cnc-ls1-compatible-gen-iii-cylinder-heads","title":"DART 11071040 Pro1 LS 15 Deg CNC (LS1 Compatible) Gen III Cylinder Heads","description":"\u003cp\u003eRecommended for engines with 4.000 inch bore or larger. Maximum competition, competition modified drag racing, circle track. Over 7,000 RPM. Dart's PRO1 LS 15 Deg 250cc CNC ported Aluminum cathedral port cylinder heads for GM LS series small block V8 engines take performance to the next level. This LS CNC cathedral port head is machined on a dedicated casting with extra thick sections to maintain the proper wall thickness after porting. Due to the large diameter intake valves, the Dart LS CNC head is recommended for use on engines with 4.000 inch and larger cylinder bores. Precise computer controlled CNC machining, multi-angle intake seats, and radiused exhaust seats enhance airflow. Extra material above the ports accommodates valve train upgrades.\u003c\/p\u003e\n\u003cp\u003eDart Pro1 LS 15 Deg CNC (LS1 Compatible) Gen III Cylinder Heads\u003c\/p\u003e\n\u003cp\u003ePlease review Specifications and the detailed fitment table for notes and exceptions.\u003c\/p\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\u003ctable class=\"specs\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003ctd\u003eDart Pro1 LS 15 Deg CNC (LS1 Compatible) Gen III Cylinder Heads\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"DART","offers":[{"title":"Default Title","offer_id":53300676329685,"sku":"ds_BGWK_11071040","price":2485.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/8999\/9829\/files\/11071040-ANG135.jpg?v=1771967230","url":"https:\/\/shdp.ca\/products\/nor-11071040-pro1-ls-15-deg-cnc-ls1-compatible-gen-iii-cylinder-heads","provider":"SHDP Truck \u0026 Auto","version":"1.0","type":"link"}