{"product_id":"frp-5-7-cnc-cylinder-heads","title":"FRP 5.7 CNC Cylinder Heads","description":"\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eAs of December 2025 - please allow 3-5 weeks for fulfillment if out of stock. Please email kara@frptuning.com for availabiity. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTo minimize issues with quality of castings, we will source all cores used in the CNC Program.\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is for a pair of CNC ported heads, \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003ewith castings included,\u003c\/strong\u003e\u003c\/span\u003e complete with reconditioned OE valves and PSI or PAC Valve Springs and Titanium Retainers. We use an aggressive valve job for maximum valve clearance and extra shimming on PSI or PAC springs for max effort setups. We went 11.36@118.5 at 4500 lbs (475 whp Dynojet) in a 8 speed regular cab Ram with these 5.7 heads. \u003cbr\u003e\u003cbr\u003e5.7 heads flow ~380 CFM @.650 lift (intake)\u003c\/p\u003e","brand":"FRP Tuning","offers":[{"title":"Default Title","offer_id":47593364128000,"sku":"sku-48056973820206","price":2750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0452\/9409\/2445\/files\/20241209-162351.jpg?v=1768336695","url":"https:\/\/big3racing.com\/products\/frp-5-7-cnc-cylinder-heads","provider":"Big3RacingParts","version":"1.0","type":"link"}