{"product_id":"beg706-028","title":"Used 706 Cylinder Head #028","description":"\u003cdiv class=\"product-description used-ls-706-cylinder-head\"\u003e\n\u003ch2\u003eUsed GM LS 706 Cylinder Head, Cathedral Port\u003c\/h2\u003e\n\n\u003cp\u003eThis is a used OEM-style \u003cstrong\u003eGM LS 706 cylinder head\u003c\/strong\u003e. The 706 casting is a cathedral port LS cylinder head commonly found on 4.8L and 5.3L GM LS-based engines, including applications such as \u003cstrong\u003eLM7, L59, LM4\u003c\/strong\u003e and \u003cstrong\u003eLR4\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e706 heads are popular for stock replacement, budget LS builds and small-bore LS applications where the smaller combustion chamber helps maintain or increase compression. They are often used in LS combinations where a simple, affordable factory cylinder head is preferred over more expensive aftermarket options.\u003c\/p\u003e\n\n\u003cp\u003eBecause of the smaller combustion chamber, 706 heads are also commonly used in budget performance builds where increasing compression is part of the engine combination. This makes them a popular choice for cost-conscious LS builds, including some high power turbo or supercharged setups when combined with the right short block, camshaft, fuel system and tuning.\u003c\/p\u003e\n\n\u003ch3\u003eImportant Condition Information\u003c\/h3\u003e\n\n\u003cp\u003eThis is a used cylinder head and condition may vary between individual units. Some heads may be more complete, while others may be missing valves, springs, retainers, seals, bolts, plugs or other small parts.\u003c\/p\u003e\n\n\u003cp\u003eSome used heads may have cosmetic wear, dirt, oxidation, gasket residue, broken bolts, damaged threads or other defects. Please see the product pictures carefully for actual condition and included parts.\u003c\/p\u003e\n\n\u003ch3\u003eImportant Fitment Information\u003c\/h3\u003e\n\n\u003cp\u003eThis 706 cylinder head is intended for GM LS cathedral port applications. It is commonly associated with 4.8L and 5.3L LS engines such as LM7, L59, LM4 and LR4.\u003c\/p\u003e\n\n\u003cp\u003eAlways compare the casting number, port shape, combustion chamber style, valve size and bolt pattern with your original cylinder head before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eGM LS 706 cathedral port cylinder head applications\u003c\/li\u003e\n\u003cli\u003e4.8L and 5.3L LS-based engines\u003c\/li\u003e\n\u003cli\u003eLM7, L59, LM4, LR4 and similar LS engine applications\u003c\/li\u003e\n\u003cli\u003eStock replacement and repair work\u003c\/li\u003e\n\u003cli\u003eBudget LS engine builds and rebuilds\u003c\/li\u003e\n\u003cli\u003eLS combinations where a smaller combustion chamber is used to help increase compression\u003c\/li\u003e\n\u003cli\u003eSmall-bore LS applications where 706-style heads are required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Used\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCasting number:\u003c\/strong\u003e 706\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e LS cathedral port cylinder head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e GM 4.8L \/ 5.3L LS-based engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon engine codes:\u003c\/strong\u003e LM7, L59, LM4, LR4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombustion chamber:\u003c\/strong\u003e Approx. 61cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake port volume:\u003c\/strong\u003e Approx. 200cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust port volume:\u003c\/strong\u003e Approx. 70cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake valve size:\u003c\/strong\u003e 1.89 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust valve size:\u003c\/strong\u003e 1.55 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Sold each\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Stock Flow Numbers\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eValve Lift\u003c\/th\u003e\n\u003cth\u003eIntake Flow\u003c\/th\u003e\n\u003cth\u003eExhaust Flow\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e.100\"\u003c\/td\u003e\n\u003ctd\u003e63 cfm\u003c\/td\u003e\n\u003ctd\u003e54 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd\u003e128 cfm\u003c\/td\u003e\n\u003ctd\u003e93 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd\u003e179 cfm\u003c\/td\u003e\n\u003ctd\u003e121 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd\u003e210 cfm\u003c\/td\u003e\n\u003ctd\u003e145 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd\u003e218 cfm\u003c\/td\u003e\n\u003ctd\u003e163 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.550\"\u003c\/td\u003e\n\u003ctd\u003e221 cfm\u003c\/td\u003e\n\u003ctd\u003e168 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd\u003e226 cfm\u003c\/td\u003e\n\u003ctd\u003e174 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eThis is a used internal engine component and may show normal signs of previous use. The cylinder head is sold as pictured, so please review all images to confirm condition, completeness and any visible defects before ordering.\u003c\/p\u003e\n\n\u003cp\u003eIf you are unsure whether this 706 cylinder head is correct for your engine, compare it with your original part before ordering or contact us for guidance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BEG","offers":[{"title":"Default Title","offer_id":63096647254365,"sku":"BEG706-028","price":1200.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1381\/2573\/files\/688BCD39-E586-47A6-99D8-BD487BA639F9.jpg?v=1769376795","url":"https:\/\/www.blencospeedshop.com\/products\/beg706-028","provider":"Blenco Speedshop","version":"1.0","type":"link"}