{"product_id":"precision-race-components-ls3-as-cast-6-bolt-aftermarket-casting-heads-cam-package-prr-199-pkg18","title":"Precision Race Components LS3 As-Cast 6-Bolt Aftermarket Casting Heads \u0026 Cam Package - PRR-199-PKG18","description":"Precision Race Components LS3 As-Cast 6-Bolt Aftermarket Casting Heads \u0026amp; Cam Package - PRR-199-PKG18\u003cbr\u003e\u003cbr\u003ePrecision Race Components all new LS3 as-cast cylinder heads completed with CNC machined chambers \u0026amp; valve guides. For  LS3\/L99\/L92\/LSA\/LS9 applications requiring a high flow aftermarket cylinder head at a competitive price!\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eMADE IN THE USA!!\u003cbr\u003eCAST IN THE USA!!\u003cbr\u003eMACHINED IN THE USA!!\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eAs-Cast 257cc Intake Runners With CNC Machined Chambers \u0026amp; Valve Guides For Unmatched Flow!\u003cbr\u003e68cc CNC Machined Chambers as Standard; Can Be Milled Down to 64cc Chambers \u0026amp; Still Retain Better than Factory Piston-to-Valve Clearance\u003cbr\u003eThicker Deck Surface Makes Them Ideal For Power-Adder Applications\u003cbr\u003e2.17\" Intake \/ 1.600\" Stainless Valves\u003cbr\u003eUtilizes Factory Rocker Arms\u003cbr\u003eIncludes TSP Dual Spring Kit w\/ PAC .660\" Valve Springs!\u003cbr\u003eAvailable with Hollow-Stem Intake Valves to Reduce Valvetrain Weight\u003cbr\u003e\u003cbr\u003eThe all new PRC LS3 As-Cast cylinder heads are now available for customers looking for the ultimate as-cast LS3 cylinder heads available.  The new PRC as-cast intake port has been flow bench tested to flow 369 CFM \u0026amp; can support everything from smaller camshaft street engines all the way to all out race engines. The cylinder heads will come standard with 68cc chambers, and we can mill them as small as 64cc while still retaining better than factory piston-to-valve clearance! We can mill additionally to get to your desired chamber size for no additional charge! \u003cbr\u003e\u003cbr\u003e\u003cbr\u003eFlow Data (4.00\" Flow Plate - No Exhaust Pipe):\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eLIFT\u003cbr\u003e\u003cbr\u003eINTAKE FLOW \u003cbr\u003e\u003cbr\u003eEXHAUST FLOW \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e \t\u003cbr\u003e​\u003cbr\u003e\u003cbr\u003e .200\"  \u003cbr\u003e\u003cbr\u003e 153 CFM\u003cbr\u003e\u003cbr\u003e 114 CFM\u003cbr\u003e\u003cbr\u003e .300\"  \u003cbr\u003e\u003cbr\u003e 233 CFM\u003cbr\u003e\u003cbr\u003e 163 CFM\u003cbr\u003e\u003cbr\u003e .400\"  \u003cbr\u003e\u003cbr\u003e 287 CFM\u003cbr\u003e\u003cbr\u003e 191 CFM\u003cbr\u003e\u003cbr\u003e .500\"  \u003cbr\u003e\u003cbr\u003e 329 CFM\u003cbr\u003e\u003cbr\u003e 214 CFM\u003cbr\u003e\u003cbr\u003e .600\"  \u003cbr\u003e\u003cbr\u003e 357 CFM\u003cbr\u003e\u003cbr\u003e 228 CFM\u003cbr\u003e\u003cbr\u003e .650\"  \u003cbr\u003e\u003cbr\u003e 369 CFM\u003cbr\u003e\u003cbr\u003e 233 CFM\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e**You must have a minimum of a 4.00\" bore size to run these cylinder heads!**   \u003cbr\u003e\u003cbr\u003e***If you purchase a Melling oil pump you MUST use a single-roller timing set!  The Melling oil pump will not clear a double-roller timing set!***\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eLethal Performance is proud to offer the entire line of  products!\u003cbr\u003e","brand":"Texas Speed","offers":[{"title":"Default Title","offer_id":48142362542338,"sku":"TSP-199-PKG18","price":2609.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/0618\/0354\/files\/8592.png?v=1784989111","url":"https:\/\/www.lethalperformance.com\/products\/precision-race-components-ls3-as-cast-6-bolt-aftermarket-casting-heads-cam-package-prr-199-pkg18","provider":"Lethal Performance","version":"1.0","type":"link"}