{"product_id":"nor-11421111p-pro1-aluminum-small-block-chevy-cylinder-heads","title":"DART 11421111P Pro1 Aluminum Small Block Chevy Cylinder Heads","description":"\u003cp\u003eStreet performance, restricted oval track, and marine performance upgrade. Mid-range to 6,500 RPM. Best for 383-434 cubic inch engines. Dart PRO1 23 Deg 200cc Platinum series heads offer increased air flow at high valve lift for large displacement engines. Long wearing Bronze valve guides, screw-in studs, multi-angle intake seats with hardened, radiused exhaust seats are standard. Best of all, our precision cast ports produce outstanding airflow without time consuming porting. Assemblies include Stainless Steel valves, premium springs, locks, retainers, studs, guide plates and seals.\u003c\/p\u003e\n\u003cp\u003eDart Pro1 Aluminum Small Block Chevy 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 Aluminum Small Block Chevy Cylinder Heads\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"DART","offers":[{"title":"Default Title","offer_id":53300680949973,"sku":"ds_BGWK_11421111P","price":1749.99,"currency_code":"CAD","in_stock":false}],"url":"https:\/\/shdp.ca\/products\/nor-11421111p-pro1-aluminum-small-block-chevy-cylinder-heads","provider":"SHDP Truck \u0026 Auto","version":"1.0","type":"link"}