{"product_id":"prc-15-degree-220cc-as-cast-cathedral-port-cylinder-heads","title":"PRC 15-Degree 220cc As-Cast Cathedral-Port Cylinder Heads","description":"\u003cp\u003eFully assembled Precision Race Components 220cc as-cast cathedral-port cylinder heads for stock-cube and smaller-bore LS combinations.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e220cc intake runners\u003c\/li\u003e\n\u003cli\u003e84cc exhaust runners\u003c\/li\u003e\n\u003cli\u003e64cc CNC-machined chambers\u003c\/li\u003e\n\u003cli\u003e2.045-inch stainless intake valves\u003c\/li\u003e\n\u003cli\u003e1.600-inch stainless exhaust valves\u003c\/li\u003e\n\u003cli\u003eTSP .660-inch dual spring package with PAC springs and titanium retainers\u003c\/li\u003e\n\u003cli\u003eCHE bronze guides\u003c\/li\u003e\n\u003cli\u003eFactory rocker compatible\u003c\/li\u003e\n\u003cli\u003eExtra-thick deck surface\u003c\/li\u003e\n\u003cli\u003eSold as a fully assembled pair\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Cathedral-port Gen 3 and Gen 4 LS engines with a minimum 3.820-inch bore. Designed for 4.8L, 5.3L, LS1, and LS2 applications using cathedral-port intake manifolds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Verify piston-to-valve clearance, pushrod length, intake-port style, compression ratio, and spring compatibility before installation. Not legal for sale or use in California on pollution-controlled vehicles.\u003c\/p\u003e","brand":"Precision Race Components","offers":[{"title":"Default","offer_id":54635247173951,"sku":"PRC-SS220AC","price":2149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/2041\/6831\/files\/PRC-SS220AC_a9be9f8b-9c21-4960-b223-0a94346f6f37.jpg?v=1785154110","url":"https:\/\/smgspeed.com\/products\/prc-15-degree-220cc-as-cast-cathedral-port-cylinder-heads","provider":"SMGspeed","version":"1.0","type":"link"}