{"product_id":"m311-273cc-ls3-cylinder-heads-set","title":"M311 273cc LS3 Cylinder Heads (SET)","description":"\u003ch1\u003e\u003cstrong\u003e\u003cspan\u003eM311 273cc LS3 Cylinder Heads (SET)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAll cylinder heads are built to order. Current lead time is approximately 4-6 weeks for completion.  Check the \"Ready To Ship\" Tab for what we have in stock.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eFully CNC ported, 68cc chamber volume\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e273cc intake port, 112cc exhaust port and 11° valve angle\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Quality Components:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eBlack Nitride Stainless Steel Severe Duty Valves\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCustom PAC .700” Lift Valve Springs\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTitanium Retainers\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eO-Ringed Exhaust Ports (Hi-Temp Silicone O-rings Included)\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2″ Headers Recommended\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003ch2 class=\"yikes-custom-woo-tab-title yikes-custom-woo-tab-title-description\"\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe Monster Series is the first threshold into HP creation far beyond any OEM head.\u003c\/p\u003e\n\u003cp\u003eFrankenstein introduced another level of horsepower when The Monster was brought to life. FED poured our arsenal of precision engineering into a common cylinder head and shifted the industry. Intake and exhaust chambers are 5-Axis CNC ported with our latest high performance program, meticulously hand blended and deburred. Our strict quality control processes ensure extreme attention to detail and precise tolerances. High quality components include FED’s premier stainless steel severe duty valves, custom PAC .700” lift valve springs, titanium retainers, bronze guides and hi-temp silicone exhaust o-ring gaskets.\u003c\/p\u003e\n\u003cp\u003eMonster’s crazy cousin “Boost Monster” is now available for power adders. The Boost Monster features CHE mag-bronze valve guides and Inconel exhaust valves for the increased heat. Both the Monster and Boost Monster fit all standard equipment such as valve covers, headers, LS3 Intakes, and OEM-type LS3 rocker arms. (Billet Rocker Stands Available Separately)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Frankenstein Engine Dynamics","offers":[{"title":"Default Title","offer_id":46237603823775,"sku":"113005","price":3333.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0424\/7571\/6767\/files\/M311-assm.webp?v=1773258829","url":"https:\/\/aestheticsbyvladi.com\/products\/m311-273cc-ls3-cylinder-heads-set","provider":"Street Driven Performance","version":"1.0","type":"link"}