{"product_id":"mast-cylinder-heads-black-label-ls7-305cc-70cc-chamber-bare-single-510-209","title":"Mast Cylinder Heads - Black Label LS7 - 305CC - 70CC Chamber - Bare - Single - 510-209","description":"\u003cp\u003eMAST CYLINDER HEADS - BLACK LABEL LS7 - 305cc - 70cc CHAMBER - BARE - SINGLE - 510-209\u003cbr\u003e\nUtilizes the Gen IV LS7 valve-train and intake manifold\u003cbr\u003e\n Designed for any new Gen IV short-block with 4.125\" bore or larger\u003cbr\u003e\n Uses a 2.250\" intake valve and 1.600\" exhaust valve\u003cbr\u003e\n Has a 294cc intake port\u003cbr\u003e\n Has 70cc combustion chamber\u003cbr\u003e\n Has a deck thickness of .750\"\u003cbr\u003e\n ***Due to the thicker deck and higher valve cover rails some beauty covers are not compatible.When using Corvette (Y-Body) front accessories alternator may need to be clearanced.\u003c\/p\u003e","brand":"Mast Motorsports","offers":[{"title":"Default Title","offer_id":52041655058726,"sku":"M510-209","price":1399.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/m2_m510-209_93.jpg?v=1770812548","url":"https:\/\/billysspeedshop.com\/products\/mast-cylinder-heads-black-label-ls7-305cc-70cc-chamber-bare-single-510-209","provider":"Billys Speed Shop","version":"1.0","type":"link"}