{"product_id":"precision-race-components-247cc-aftermarket-casting-heads-cam-package-prr-199-pkg247","title":"Precision Race Components 247cc Aftermarket Casting Heads \u0026 Cam Package - PRR-199-PKG247","description":"Precision Race Components 247cc Aftermarket Casting Heads \u0026amp; Cam Package - PRR-199-PKG247\u003cbr\u003e\u003cbr\u003ePrecision Race Components all new cylinder head castings completed with 247cc runners. For 408 cubic inch and larger applications with 4.03\"+ bore sizing.\u003cbr\u003e\u003cbr\u003eMADE IN THE USA!!\u003cbr\u003eCAST IN THE USA!!\u003cbr\u003eMACHINED IN THE USA!!\u003cbr\u003e​\u003cbr\u003eFeatures: \u003cbr\u003e247cc Fully CNC Ported Intake Runners\u003cbr\u003e84cc Fully CNC Ported Exhaust Runners\u003cbr\u003eTSP Dual Spring Kit w\/ PAC Springs Rated To .660\" Lift\u003cbr\u003e68cc CNC Machined Chambers\u003cbr\u003eCHE Bronze Guides\u003cbr\u003e2.120\" Intake \/ 1.600\" Stainless Valves\u003cbr\u003eFactory Rocker Friendly!!*\u003cbr\u003e***NOW AVAILABLE WITH HOLLOW STEM INTAKE VALVES!!! SAVES APPROXIMATELY 15 Grams!!!***\u003cbr\u003eThe all new 247cc cylinder head is finally available for customers looking for the pinnacle of LS cathedral port performance.   The new 247cc port has been flow bench tested to flow over 360cfm. \u003cbr\u003e\u003cbr\u003eFlow Data:\u003cbr\u003e No Exhaust Pipe\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eLIFT\tINTAKE FLOW \tEXHAUST FLOW \u003cbr\u003e .100\"  \t66 CFM \t57 CFM \u003cbr\u003e .200\"  \t 147 CFM\t 117 CFM\u003cbr\u003e .300\"  \t 228 CFM\t 170 CFM\u003cbr\u003e .400\"  \t 282 CFM\t 206 CFM\u003cbr\u003e .500\"  \t 321 CFM\t 227 CFM\u003cbr\u003e .600\"  \t 343 CFM\t 235 CFM\u003cbr\u003e .650\"  \t 355 CFM\t 241 CFM\u003cbr\u003e.700\"    \t360 CFM \t  245 CFM  \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":48142362149122,"sku":"TSP-199-PKG247","price":3253.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/0618\/0354\/files\/8108.png?v=1784989111","url":"https:\/\/www.lethalperformance.com\/products\/precision-race-components-247cc-aftermarket-casting-heads-cam-package-prr-199-pkg247","provider":"Lethal Performance","version":"1.0","type":"link"}