{"product_id":"mast-cylinder-heads-black-label-ls3-295cc-70cc-chamber-bare-single-510-204","title":"Mast Cylinder Heads - Black Label LS3 - 295CC - 70CC Chamber - Bare - Single - 510-204","description":"\u003cp\u003eMAST CYLINDER HEADS - BLACK LABEL LS3 - 295cc - 70cc CHAMBER - BARE - SINGLE - 510-204\u003cbr\u003e\n• Utilizes the Gen IV LS7 OEM rockers, but accepts the LS3\/L76 intake manifold\u003cbr\u003e\n • Designed for any new Gen IV short-block with 4.125\" bore or larger\u003cbr\u003e\n • The 6-bolt design is compatible with GM LSX and World LSX blocks\u003cbr\u003e\n • Uses a 2.200\" intake valve and 1.600\" exhaust valve\u003cbr\u003e\n • Has a 270cc intake port\u003cbr\u003e\n • Has a deck thickness of .750\"\u003c\/p\u003e","brand":"Mast Motorsports","offers":[{"title":"Default Title","offer_id":52041654927654,"sku":"510-204L","price":1675.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/m2_510-204_90.jpg?v=1770810394","url":"https:\/\/billysspeedshop.com\/da\/products\/mast-cylinder-heads-black-label-ls3-295cc-70cc-chamber-bare-single-510-204","provider":"Billys Speed Shop","version":"1.0","type":"link"}