{"product_id":"prc-ls7x-285cc-cnc-ported-6-bolt-cylinder-heads","title":"PRC LS7x 285cc CNC-Ported 6-Bolt Cylinder Heads","description":"\u003cp\u003eFully assembled PRC LS7x 285cc CNC-ported cylinder heads for large-cubic-inch and high-horsepower LS7 combinations.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e285cc CNC intake runners\u003c\/li\u003e\n\u003cli\u003e70cc chambers\u003c\/li\u003e\n\u003cli\u003e12-degree valve angle\u003c\/li\u003e\n\u003cli\u003e2.245-inch titanium intake valves\u003c\/li\u003e\n\u003cli\u003e1.610-inch hollow-stem stainless exhaust valves\u003c\/li\u003e\n\u003cli\u003eTSP .660-inch PAC dual springs with titanium retainers\u003c\/li\u003e\n\u003cli\u003eCHE bronze guides\u003c\/li\u003e\n\u003cli\u003eSix-bolt casting compatible with standard four-bolt GM blocks\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e LS7-port engines with a minimum 4.125-inch bore. Recommended for larger-displacement and higher-output combinations. Requires LS7-style intake, rocker, and related components.\u003c\/p\u003e","brand":"Precision Race Components","offers":[{"title":"Default","offer_id":54635431657791,"sku":"PRC-SSLS7285","price":3999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/2041\/6831\/files\/PRC-SSLS7265_1cbd4294-c3f3-4f67-8665-c4d9736acfc6.png?v=1785154200","url":"https:\/\/smgspeed.com\/products\/prc-ls7x-285cc-cnc-ported-6-bolt-cylinder-heads","provider":"SMGspeed","version":"1.0","type":"link"}