{"title":"Gen 5 Camaro Heads","description":"","products":[{"product_id":"prc-ls3-aftermarket-6-bolt-260cc-cnc-cylinder-heads","title":"PRC LS3 Aftermarket 6-Bolt 260cc CNC Cylinder Heads","description":"\u003cp style=\"font-weight: 400;\"\u003eAll Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology!\u003cbr\u003e\u003cbr\u003e\u003ca style=\"font-style: inherit; font-weight: 900;\" href=\"http:\/\/www.texas-speed.com\/t-prcheads.aspx\"\u003eClick Here\u003c\/a\u003e to SEE why we build better heads!\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cb\u003e\u003cspan style=\"font-style: inherit;\"\u003eMADE IN THE USA!!\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cb\u003e\u003cspan style=\"font-style: inherit;\"\u003eCAST IN THE USA!!\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cb\u003e\u003cspan style=\"font-style: inherit;\"\u003eMACHINED IN THE USA!!\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cbr\u003ePRC's aftermarket casting LS3\/L92\/L99 cylinder heads come standard with the following options:\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNEW PRC 13-Degree Valve Angle LS3 Castings\u003c\/li\u003e\n\u003cli\u003eImproved Piston-to-Valve Clearance For Extra Compression \u0026amp; Larger Camshafts\u003c\/li\u003e\n\u003cli\u003eSmaller Than Stock Intake Port Volume For Improved Port Velocity\u003c\/li\u003e\n\u003cli\u003eManley Stainless 2.185\" Intake, 1.60\" Exhaust Valves\u003c\/li\u003e\n\u003cli\u003eBillet Rocker Pedestals\u003c\/li\u003e\n\u003cli\u003eTSP .660\" Dual Spring Kit w\/ PAC Valve Springs, Titanium Retainers, Seats, \u0026amp; Seals\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003eCompletely Assembled and Milled to Your Specifications\u003c\/li\u003e\n\u003cli\u003e60-68cc Chambers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-weight: 400;\"\u003eAll PRC cylinder heads are extensively researched and tested. The all-new PRC aftermarket casting LS3 cylinder heads are designed to flow considerably more than a gm ported casting while keeping the port sizes smaller for improved port velocity. The result is a cylinder head that is smaller than a stock GM LS3 port and moves more air than any other ls3 cylinder heads! \u003c\/p\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cbr\u003eThe all new PRC aftermarket casting LS3 heads are the perfect option for customers looking for the ultimate in LS3\/L99\/L92 cylinder head technology\u003c\/p\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003eThe PRC aftermarket casting LS3 cylinder heads are available in 2 different configurations: \u003c\/p\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e255cc Runners for max effort stock cube LS2\/LS3\/L99\/L92 engines looking for a 370cfm cylinder head that can be aggressively milled \u0026amp; still keep better than stock p\/v\u003c\/li\u003e\n\u003cli\u003e260cc Runners For LS3\/L99\/L92 stroker engines needing a 380cfm+ cylinder head!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003eThe 13-degree valve angle will allow for the ability to run more compression and larger camshafts thanks to additional piston-to-valve clearance!!  \u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable style=\"font-style: inherit; font-weight: inherit;\" width=\"371\"\u003e\n\u003ctbody style=\"font-style: inherit; font-weight: inherit;\"\u003e\n\u003ctr style=\"font-style: inherit; font-weight: inherit;\"\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cb\u003e\u003cspan style=\"font-style: inherit;\"\u003e Lift\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cb\u003e\u003cspan style=\"font-style: inherit;\"\u003eIntake Flow \u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cb\u003e\u003cspan style=\"font-style: inherit;\"\u003e Exhaust Flow\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"font-style: inherit; font-weight: inherit;\"\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e .200\"\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e 157 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e 117 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"font-style: inherit; font-weight: inherit;\"\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e .300\"\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e 224 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e 170 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"font-style: inherit; font-weight: inherit;\"\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e .400\"\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e 279 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e205 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"font-style: inherit; font-weight: inherit;\"\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e .500\"\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e 329 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e 225 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"font-style: inherit; font-weight: inherit;\"\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e .600\"\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e 360 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e 235 cfm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"font-style: inherit; font-weight: inherit;\"\u003e\n\u003ctd\u003e .650\"\u003c\/td\u003e\n\u003ctd\u003e 372 cfm\u003c\/td\u003e\n\u003ctd\u003e 240 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"font-style: inherit; font-weight: inherit;\"\u003e\n\u003ctd\u003e .700\"\u003c\/td\u003e\n\u003ctd\u003e 380 cfm\u003c\/td\u003e\n\u003ctd\u003e 243 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-style: inherit; font-weight: inherit;\"\u003e\u003cbr\u003eWith all PRC cylinder heads, quality and performance are our two highest priorities! In addition to performance, you will not find a better performing set of cylinder heads at this price (cost is for the pair!). Call one of our sales consultants today if you have any questions or if you would like to discuss your specific application. \u003cbr\u003e\u003c\/p\u003e","brand":"MailOrder Tuner","offers":[{"title":"Do Not Install Valve Spring Kit \/ Stainless Hollow-Stem Intake\/Stainless Steel Exhaust Valves \/ 68cc standard","offer_id":31897943670883,"sku":"#199-PRCLS36B260-1","price":2709.99,"currency_code":"USD","in_stock":false},{"title":"TSP .660\" Dual Spring Kit Featuring PAC Valve Springs w\/ Titanium Retainers \/ Stainless Hollow-Stem Intake\/Stainless Steel Exhaust Valves \/ 68cc standard","offer_id":31897943965795,"sku":"#199-PRCLS36B260-10","price":2937.59,"currency_code":"USD","in_stock":true},{"title":"TSP .750\" Dual Spring Kit Featuring PAC Valve Springs w\/ Titanium Retainers \/ Stainless Hollow-Stem Intake\/Stainless Steel Exhaust Valves \/ 68cc standard","offer_id":31897944260707,"sku":"#199-PRCLS36B260-19","price":3250.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0253\/3097\/4819\/products\/4008_7d19b9b4-dfb1-40a8-bfd3-42838bdfe2ac.png?v=1613333779"},{"product_id":"prc-ls3-l92-lsa-cnc-cylinder-head-porting","title":"PRC LS3, L92, \u0026 LSA CNC Cylinder Head Porting","description":"\u003cstrong\u003eTons of R\u0026amp;D on both the flow bench \u0026amp; engine dyno has created one of the leading LS3\/ cylinder heads available!\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe PRC LS3 cylinder heads porting for customers with existing LS-3 cylinder heads.  Corvette \u0026amp; 2010 Camaro customers can now send in their heads to be ported!\u003c\/span\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable align=\"center\" border=\"1\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e Stock Valve Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e Stainless Valve Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eHollow Stem Valve Weight \u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003e 106\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003e 122\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003e 91\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e Grams\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e Grams\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e Grams\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cstrong\u003e\u003cbr\u003ePrecision Race Components\u003c\/strong\u003e\u003cspan\u003e LS3\/L92 CNC ported cylinder heads.  Fully CNC ported LS3-based cylinder heads!\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e2.165\"\/1.59\" Valves\u003c\/li\u003e\n\u003cli\u003ePRC Double Spring Kit AVAILABLE\u003c\/li\u003e\n\u003cli\u003eCompletely Assembled \u0026amp; Setup To Your Specs!!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003eService Includes:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003eCylinder Head Cleaning\u003c\/li\u003e\n\u003cli\u003eCNC Valve Job\u003c\/li\u003e\n\u003cli\u003eCNC Porting\u003c\/li\u003e\n\u003cli\u003eMilling to customers specs\u003c\/li\u003e\n\u003cli\u003eFully Assembled\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003eDyno Tested 25+HP Gains Over Stock 6.2L Cylinder Heads!\u003c\/span\u003e\n\u003ctable align=\"center\" border=\"1\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e PRC LS3 Intake\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e PRC LS3 Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e cfm\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e .200\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 154\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e .300\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 223\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 170\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e .400\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 282\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 198\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e .500\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 324\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 211\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e .600\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 351\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 228\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e .650\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e \u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 358\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e 232\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e*Typically a 1-2 week turn around time once heads arrive at our facility.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ProductWarnings\"\u003e\n\u003cdiv class=\"Warning_prop-65\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"MailOrder Tuner","offers":[{"title":"Re-use Stock Supplied Valves \/ No Springs","offer_id":31897957924963,"sku":"#199-CNCPORTLS3-1","price":899.99,"currency_code":"USD","in_stock":true},{"title":"Re-use Stock Supplied Valves \/ TSP .660\" Lift Dual Spring Kit w\/ Titanium Retainers featuring PAC Valve Springs","offer_id":31897957957731,"sku":"#199-CNCPORTLS3-2","price":1214.98,"currency_code":"USD","in_stock":true},{"title":"Re-use Stock Supplied Valves \/ TSP .750\" Lift Dual Spring Kit w\/ Titanium Retainers featuring PAC Valve Springs","offer_id":31897957990499,"sku":"#199-CNCPORTLS3-3","price":1279.98,"currency_code":"USD","in_stock":true},{"title":"2.165\"\/1.59\" Stainless Steel Valves \/ No Springs","offer_id":31897958023267,"sku":"#199-CNCPORTLS3-4","price":1071.71,"currency_code":"USD","in_stock":true},{"title":"2.165\"\/1.59\" Stainless Steel Valves \/ TSP .660\" Lift Dual Spring Kit w\/ Titanium Retainers featuring PAC Valve Springs","offer_id":31897958056035,"sku":"#199-CNCPORTLS3-5","price":1386.7,"currency_code":"USD","in_stock":true},{"title":"2.165\"\/1.59\" Stainless Steel Valves \/ TSP .750\" Lift Dual Spring Kit w\/ Titanium Retainers featuring PAC Valve Springs","offer_id":31897958088803,"sku":"#199-CNCPORTLS3-6","price":1451.7,"currency_code":"USD","in_stock":true},{"title":"2.165\"\/1.59\" GM Hollow Stem Intake Valves \/ No Springs","offer_id":31897958121571,"sku":"#199-CNCPORTLS3-7","price":1164.99,"currency_code":"USD","in_stock":true},{"title":"2.165\"\/1.59\" GM Hollow Stem Intake Valves \/ TSP .660\" Lift Dual Spring Kit w\/ Titanium Retainers featuring PAC Valve Springs","offer_id":31897958154339,"sku":"#199-CNCPORTLS3-8","price":1399.97,"currency_code":"USD","in_stock":true},{"title":"2.165\"\/1.59\" GM Hollow Stem Intake Valves \/ TSP .750\" Lift Dual Spring Kit w\/ Titanium Retainers featuring PAC Valve Springs","offer_id":31897958187107,"sku":"#199-CNCPORTLS3-9","price":1464.98,"currency_code":"USD","in_stock":true},{"title":"2.165\"\/1.59\" Stainless Hollow-Stem\/Stainless Exhaust Valves \/ No Springs","offer_id":31897958219875,"sku":"#199-CNCPORTLS3-10","price":1422.13,"currency_code":"USD","in_stock":true},{"title":"2.165\"\/1.59\" Stainless Hollow-Stem\/Stainless Exhaust Valves \/ TSP .660\" Lift Dual Spring Kit w\/ Titanium Retainers featuring PAC Valve Springs","offer_id":31897958252643,"sku":"#199-CNCPORTLS3-11","price":1732.12,"currency_code":"USD","in_stock":true},{"title":"2.165\"\/1.59\" Stainless Hollow-Stem\/Stainless Exhaust Valves \/ TSP .750\" Lift Dual Spring Kit w\/ Titanium Retainers featuring PAC Valve Springs","offer_id":31897958285411,"sku":"#199-CNCPORTLS3-12","price":1599.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0253\/3097\/4819\/products\/1388.png?v=1613333783"},{"product_id":"prc-ls7x-265cc-7-0l-cnc-head-porting","title":"PRC LS7x 265cc 7.0L CNC Head Porting","description":"\u003cdiv\u003e\n\u003cstrong\u003eThese are for customer supplied cylinder heads. We are not supplying castings! This is porting, valve job, and milling only!\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cstrong\u003ePrecision Race Components\u003c\/strong\u003e\u003cspan\u003e LS7 CNC 265cc ported cylinder heads.  Fully CNC ported LS7-based cylinder heads! (All New GM LS7 Cylinder Head Castings)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eBased off PRC's CNC Ported LS7 Heads\u003c\/li\u003e\n\u003cli\u003e2.200\"\/1.610\" Valves (base price for exchange includes new stainless exhaust valves)\u003c\/li\u003e\n\u003cli\u003eAvailable with PRC Double Spring Kit Complete With PRC Double Springs, Titanium Retainers, Seats, \u0026amp; Seals\u003c\/li\u003e\n\u003cli\u003eCompletely Assembled \u0026amp; Setup To Your Specs!!\u003c\/li\u003e\n\u003cli\u003eAvailable With Stainless, Hollow Stems, or titanium valves!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003eExtensive CNC \u0026amp; dyno testing has resulted in one of the most affordable \u0026amp; powerful LS7 based cylinder heads available! Flowing up to 35cfm more than the stock GM LS7 head, the all new PRC cylinder head offers both unmatched power \u0026amp; airflow.  The PRC LS7 cylinder head is available with standard stainless exhaust valves and titanium intake valves.\u003c\/span\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cspan\u003eFlow Data:  @ 4.125\" Bore Plate  Superflow 600\u003c\/span\u003e\n\u003ctable width=\"100%\" align=\"center\" border=\"1\" cellpadding=\"0\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e \n\u003cp\u003eLS7 \u003cbr\u003eIntake\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e LS7 Exhaust\u003c\/td\u003e\n\u003ctd\u003e  PRC 265cc \u003cbr\u003eLS7 Intake\u003c\/td\u003e\n\u003ctd\u003e  PRC LS7 Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .200\u003c\/td\u003e\n\u003ctd\u003e 161\u003c\/td\u003e\n\u003ctd\u003e 114\u003c\/td\u003e\n\u003ctd\u003e 169\u003c\/td\u003e\n\u003ctd\u003e 119 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .300\u003c\/td\u003e\n\u003ctd\u003e 227\u003c\/td\u003e\n\u003ctd\u003e 171 \u003c\/td\u003e\n\u003ctd\u003e 248\u003c\/td\u003e\n\u003ctd\u003e 179 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .400\u003c\/td\u003e\n\u003ctd\u003e 291\u003c\/td\u003e\n\u003ctd\u003e 193 \u003c\/td\u003e\n\u003ctd\u003e 308\u003c\/td\u003e\n\u003ctd\u003e 211 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .500\u003c\/td\u003e\n\u003ctd\u003e 330\u003c\/td\u003e\n\u003ctd\u003e 203 \u003c\/td\u003e\n\u003ctd\u003e351\u003c\/td\u003e\n\u003ctd\u003e 224 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .600\u003c\/td\u003e\n\u003ctd\u003e 351 \u003c\/td\u003e\n\u003ctd\u003e 209\u003c\/td\u003e\n\u003ctd\u003e383\u003c\/td\u003e\n\u003ctd\u003e 235\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .650\u003c\/td\u003e\n\u003ctd\u003e 353\u003c\/td\u003e\n\u003ctd\u003e 204\u003c\/td\u003e\n\u003ctd\u003e388\u003c\/td\u003e\n\u003ctd\u003e 241\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .700\u003c\/td\u003e\n\u003ctd\u003e 353\u003c\/td\u003e\n\u003ctd\u003e 209\u003c\/td\u003e\n\u003ctd\u003e393\u003c\/td\u003e\n\u003ctd\u003e 246\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003e\u003cspan\u003e**If stock valve guides are damaged or badly worn, there is an additional $150 fee to replace them.\u003cbr\u003e**If stock guides are replaced, stock springs can not be used due to the larger O.D. of the aftermarket guide. Spring kit must be replaced with aftermarket as well.\u003c\/span\u003e\u003c\/strong\u003e","brand":"MailOrder Tuner","offers":[{"title":"Replace Exhaust Valves with 1.610\" Stainless Steel Reuse Customer's Intake Valves \/ No Spring Kit Installed \/ Do Not Replace Valves Guides","offer_id":31897967493219,"sku":"#199-265LS7-1","price":959.99,"currency_code":"USD","in_stock":true},{"title":"Replace Exhaust Valves with 1.610\" Stainless Steel Reuse Customer's Intake Valves \/ No Spring Kit Installed \/ Replace Valve Guides","offer_id":31897967525987,"sku":"#199-265LS7-2","price":1109.99,"currency_code":"USD","in_stock":true},{"title":"Replace Exhaust Valves with 1.610\" Stainless Steel Reuse Customer's Intake Valves \/ TSP .660\" Lift Dual Spring Kit w\/ PAC Springs \u0026 Titanium Retainers \/ Do Not Replace Valves Guides","offer_id":31897967558755,"sku":"#199-265LS7-3","price":1259.98,"currency_code":"USD","in_stock":true},{"title":"Replace Exhaust Valves with 1.610\" Stainless Steel Reuse Customer's Intake Valves \/ TSP .660\" Lift Dual Spring Kit w\/ PAC Springs \u0026 Titanium Retainers \/ Replace Valve Guides","offer_id":31897967591523,"sku":"#199-265LS7-4","price":1409.98,"currency_code":"USD","in_stock":true},{"title":"Replace Exhaust Valves with 1.610\" Stainless Steel Reuse Customer's Intake Valves \/ TSP .700\" Lift Dual Spring Kit w\/ PAC 1207X Springs \u0026 Titanium Retainers \/ Do Not Replace Valves Guides","offer_id":31897967624291,"sku":"#199-265LS7-5","price":1319.98,"currency_code":"USD","in_stock":true},{"title":"Replace Exhaust Valves with 1.610\" Stainless Steel Reuse Customer's Intake Valves \/ TSP .700\" Lift Dual Spring Kit w\/ PAC 1207X Springs \u0026 Titanium Retainers \/ Replace Valve Guides","offer_id":31897967657059,"sku":"#199-265LS7-6","price":1469.98,"currency_code":"USD","in_stock":true},{"title":"Replace Exhaust Valves with 1.610\" Stainless Steel Reuse Customer's Intake Valves \/ TSP .750\" Lift Dual Spring Kit w\/ PAC 1209X Springs \u0026 Titanium Retainers \/ Do Not Replace Valves Guides","offer_id":31897967689827,"sku":"#199-265LS7-7","price":1319.98,"currency_code":"USD","in_stock":true},{"title":"Replace Exhaust Valves with 1.610\" Stainless Steel Reuse Customer's Intake Valves \/ TSP .750\" Lift Dual Spring Kit w\/ PAC 1209X Springs \u0026 Titanium Retainers \/ Replace Valve Guides","offer_id":31897967722595,"sku":"#199-265LS7-8","price":1469.98,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.20\" Intake\/Stainless Exhaust \/ No Spring Kit Installed \/ Do Not Replace Valves Guides","offer_id":31897967755363,"sku":"#199-265LS7-9","price":1319.98,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.20\" Intake\/Stainless Exhaust \/ No Spring Kit Installed \/ Replace Valve Guides","offer_id":31897967788131,"sku":"#199-265LS7-10","price":1469.98,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.20\" Intake\/Stainless Exhaust \/ TSP .660\" Lift Dual Spring Kit w\/ PAC Springs \u0026 Titanium Retainers \/ Do Not Replace Valves Guides","offer_id":31897967820899,"sku":"#199-265LS7-11","price":1619.97,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.20\" Intake\/Stainless Exhaust \/ TSP .660\" Lift Dual Spring Kit w\/ PAC Springs \u0026 Titanium Retainers \/ Replace Valve Guides","offer_id":31897967853667,"sku":"#199-265LS7-12","price":1769.97,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.20\" Intake\/Stainless Exhaust \/ TSP .700\" Lift Dual Spring Kit w\/ PAC 1207X Springs \u0026 Titanium Retainers \/ Do Not Replace Valves Guides","offer_id":31897967886435,"sku":"#199-265LS7-13","price":1679.97,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.20\" Intake\/Stainless Exhaust \/ TSP .700\" Lift Dual Spring Kit w\/ PAC 1207X Springs \u0026 Titanium Retainers \/ Replace Valve Guides","offer_id":31897967919203,"sku":"#199-265LS7-14","price":1819.97,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.20\" Intake\/Stainless Exhaust \/ TSP .750\" Lift Dual Spring Kit w\/ PAC 1209X Springs \u0026 Titanium Retainers \/ Do Not Replace Valves Guides","offer_id":31897967951971,"sku":"#199-265LS7-15","price":1669.97,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.20\" Intake\/Stainless Exhaust \/ TSP .750\" Lift Dual Spring Kit w\/ PAC 1209X Springs \u0026 Titanium Retainers \/ Replace Valve Guides","offer_id":31897967984739,"sku":"#199-265LS7-16","price":1941.98,"currency_code":"USD","in_stock":true},{"title":"2.200\"\/1.61\" Titanium Intake\\Stainless Exhaust \/ No Spring Kit Installed \/ Do Not Replace Valves Guides","offer_id":31897968017507,"sku":"#199-265LS7-17","price":1819.98,"currency_code":"USD","in_stock":false},{"title":"2.200\"\/1.61\" Titanium Intake\\Stainless Exhaust \/ No Spring Kit Installed \/ Replace Valve Guides","offer_id":31897968050275,"sku":"#199-265LS7-18","price":1969.98,"currency_code":"USD","in_stock":false},{"title":"2.200\"\/1.61\" Titanium Intake\\Stainless Exhaust \/ TSP .660\" Lift Dual Spring Kit w\/ PAC Springs \u0026 Titanium Retainers \/ Do Not Replace Valves Guides","offer_id":31897968083043,"sku":"#199-265LS7-19","price":2169.97,"currency_code":"USD","in_stock":false},{"title":"2.200\"\/1.61\" Titanium Intake\\Stainless Exhaust \/ TSP .660\" Lift Dual Spring Kit w\/ PAC Springs \u0026 Titanium Retainers \/ Replace Valve Guides","offer_id":31897968115811,"sku":"#199-265LS7-20","price":2319.99,"currency_code":"USD","in_stock":false},{"title":"2.200\"\/1.61\" Titanium Intake\\Stainless Exhaust \/ TSP .700\" Lift Dual Spring Kit w\/ PAC 1207X Springs \u0026 Titanium Retainers \/ Do Not Replace Valves Guides","offer_id":31897968148579,"sku":"#199-265LS7-21","price":2229.97,"currency_code":"USD","in_stock":false},{"title":"2.200\"\/1.61\" Titanium Intake\\Stainless Exhaust \/ TSP .700\" Lift Dual Spring Kit w\/ PAC 1207X Springs \u0026 Titanium Retainers \/ Replace Valve Guides","offer_id":31897968181347,"sku":"#199-265LS7-22","price":2379.97,"currency_code":"USD","in_stock":false},{"title":"2.200\"\/1.61\" Titanium Intake\\Stainless Exhaust \/ TSP .750\" Lift Dual Spring Kit w\/ PAC 1209X Springs \u0026 Titanium Retainers \/ Do Not Replace Valves Guides","offer_id":31897968214115,"sku":"#199-265LS7-23","price":2229.97,"currency_code":"USD","in_stock":false},{"title":"2.200\"\/1.61\" Titanium Intake\\Stainless Exhaust \/ TSP .750\" Lift Dual Spring Kit w\/ PAC 1209X Springs \u0026 Titanium Retainers \/ Replace Valve Guides","offer_id":31897968246883,"sku":"#199-265LS7-24","price":2379.97,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0253\/3097\/4819\/products\/1413.png?v=1613333784"},{"product_id":"prc-ls7x-265cc-cnc-heads","title":"PRC LS7x 265cc CNC Heads","description":"\u003cp\u003e\u003cspan\u003ePrecision Race Components\u003c\/span\u003e LS7 CNC 265cc ported cylinder heads.\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ca href=\"http:\/\/www.texas-speed.com\/t-prcheads.aspx\"\u003eClick Here\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eto SEE why we build better heads!  \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eMADE IN THE USA!!\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eCAST IN THE USA!!\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eMACHINED IN THE USA!!\u003c\/span\u003e\u003c\/div\u003e\n \n\u003cul\u003e\n\u003cli\u003ePRC 6-Bolt LS7 Cylinder Heads with Thicker Deck Surface\u003c\/li\u003e\n\u003cli\u003eWill Work on Both Standard GM 4-Bolt \u0026amp; Aftermarket LSx \/ RHS 6-Bolt Style Engine Blocks\u003c\/li\u003e\n\u003cli\u003e2.200\"\/1.610\" Valves\u003c\/li\u003e\n\u003cli\u003eTSP .660\" Dual Spring Kit w\/ PAC Springs, Retainers, Seats, \u0026amp; Seals\u003cbr\u003eSprings, Titanium Retainers, Seats, \u0026amp; Seals\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003eCompletely Assembled \u0026amp; Setup To Your Specs\u003c\/li\u003e\n\u003cli\u003eAvailable With Stainless Steel, Hollow-Stem, or Titanium Intake Valves\u003c\/li\u003e\n\u003c\/ul\u003e\nExtensive CNC and dyno testing has resulted in one of the most affordable and powerful LS7-based cylinder heads available! Flowing up to 35 CFM more than the stock GM LS7 head, the all-new PRC cylinder heads offer both unmatched power and airflow!\u003cbr\u003e\u003cbr\u003eThe PRC LS7 cylinder heads is available with standard stainless valves, hollow-stem intake, and titanium intake valves.  If you are going to run the stainless steel intake valves, we recommend limiting total valve lift to no more than .616\" due to the weight of the intake valve.  Upgrading to the hollow-stem intake valve will shed significant intake valve weight and allow for additional lift.  The titanium intake valves will be the lightest choice of the three choices and offer the best lift possible!\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\nFlow Data:  @ 4.125\" Bore Plate  Superflow 600\n\u003ctable width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" border=\"1\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 74px;\"\u003e\n\u003ctd style=\"height: 74px;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"height: 74px;\"\u003e \n\u003cp\u003eLS7 \u003cbr\u003eIntake\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"height: 74px;\"\u003e LS7 Exhaust\u003c\/td\u003e\n\u003ctd style=\"height: 74px;\"\u003e  PRC 265cc \u003cbr\u003eLS7 Intake\u003c\/td\u003e\n\u003ctd style=\"height: 74px;\"\u003e  PRC LS7 Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 25.7812px;\"\u003e\n\u003ctd style=\"height: 25.7812px;\"\u003e .200\u003c\/td\u003e\n\u003ctd style=\"height: 25.7812px;\"\u003e 161\u003c\/td\u003e\n\u003ctd style=\"height: 25.7812px;\"\u003e 114\u003c\/td\u003e\n\u003ctd style=\"height: 25.7812px;\"\u003e 169\u003c\/td\u003e\n\u003ctd style=\"height: 25.7812px;\"\u003e 119 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px;\"\u003e .300\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 227\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 171 \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 248\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 179 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px;\"\u003e .400\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 291\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 193 \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 308\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 211 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px;\"\u003e .500\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 330\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 203 \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e351\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 224 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px;\"\u003e .600\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 351 \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 209\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e383\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 235\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px;\"\u003e .650\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 353\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 204\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e388\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 241\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px;\"\u003e .700\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 353\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 209\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e393\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e 246\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e \u003c\/td\u003e\n\u003ctd style=\"height: 19px;\"\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e **Valve spring lift ratings are based on using titanium intake valves.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"MailOrder Tuner","offers":[{"title":"1.61\" Stainless Exhaust Valve \/ 2.200\" Titanium Intake Valve \/ TSP .660\" Dual Spring Kit w\/ PAC Valve Springs \u0026 Titanium Retainers","offer_id":31897980698723,"sku":"199-SSPRCLS7265","price":3935.99,"currency_code":"USD","in_stock":true},{"title":"1.61\" Hollow-Stem Exhaust Valve \/ 2.200\" Titanium Intake Valve \/ TSP .660\" Dual Spring Kit w\/ PAC Valve Springs \u0026 Titanium Retainers","offer_id":31897980960867,"sku":"199-SSPRCLS7265","price":3935.99,"currency_code":"USD","in_stock":true},{"title":"1.61\" Inconel Exhaust Valve Upgrade \/ 2.200\" Titanium Intake Valve \/ TSP .660\" Dual Spring Kit w\/ PAC Valve Springs \u0026 Titanium Retainers","offer_id":31897981223011,"sku":"199-SSPRCLS7265","price":3935.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0253\/3097\/4819\/products\/1236.png?v=1613333789"},{"product_id":"prc-ls7x-265cc-cnc-small-bore-heads","title":"PRC LS7x 265cc CNC Small Bore Heads","description":"\u003cdiv\u003e\u003cspan\u003eRequires at least a 4.065\" Bore \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cspan\u003ePrecision Race Components\u003c\/span\u003e\u003cspan\u003e LS7 CNC 265cc ported cylinder heads. \u003c\/span\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ca href=\"http:\/\/www.texas-speed.com\/t-prcheads.aspx\"\u003eClick Here\u003c\/a\u003e to SEE why we build better heads! \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eMADE IN THE USA!!\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eCAST IN THE USA!!\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eMACHINED IN THE USA!!\u003c\/span\u003e\u003c\/div\u003e\n \n\u003cul\u003e\n\u003cli\u003ePRC 6-Bolt LS7 Cylinder Heads with Thicker Deck Surface\u003c\/li\u003e\n\u003cli\u003eWill Work on Both Standard GM 4-Bolt \u0026amp; Aftermarket LSx \/ RHS 6-Bolt Style Engine Blocks\u003c\/li\u003e\n\u003cli\u003e2.205\"\/1.59\" Valves\u003c\/li\u003e\n\u003cli\u003eTSP .660\" Dual Spring Kit w\/ PAC Springs, Retainers, Seats, \u0026amp; Seals\u003cbr\u003eSprings, Titanium Retainers, Seats, \u0026amp; Seals\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003eCompletely Assembled \u0026amp; Setup To Your Specs\u003c\/li\u003e\n\u003cli\u003eAvailable With Stainless Steel, Hollow-Stem, or Titanium Intake Valves\u003c\/li\u003e\n\u003cli\u003e68cc Chamber Size as Standard\u003c\/li\u003e\n\u003c\/ul\u003e\nExtensive CNC and dyno testing has resulted in one of the most affordable and powerful LS7-based cylinder heads available! Flowing up to 35 CFM more than the stock GM LS7 head, the all-new PRC cylinder heads offer both unmatched power and airflow!\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe PRC Small Bore LS7 cylinder heads are designed for both stroker, and stock cube applications with a 4.060\"-4.100\" bore.  For bores larger than 4.100\" bore checkout the PRC LS7 265cc \u0026amp; 285cc cylinder heads!\u003cbr\u003e\u003cbr\u003eThe PRC LS7 cylinder heads are available with hollow-stem intake and titanium intake valves. We recommend no more than .625\" total intake valve lift with the hollow-stem intake valves and no more than .670\" total valve lift with the titanium intake valves.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\nSuperflow 600\u003c\/div\u003e\n\u003cdiv\u003e  \n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" border=\"1\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e  PRC 265cc \u003cbr\u003eLS7 Intake\u003c\/td\u003e\n\u003ctd\u003e  PRC LS7 Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .200\u003c\/td\u003e\n\u003ctd\u003e 169\u003c\/td\u003e\n\u003ctd\u003e 118\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .300\u003c\/td\u003e\n\u003ctd\u003e 246\u003c\/td\u003e\n\u003ctd\u003e 176\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .400\u003c\/td\u003e\n\u003ctd\u003e 304\u003c\/td\u003e\n\u003ctd\u003e 208\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .500\u003c\/td\u003e\n\u003ctd\u003e348\u003c\/td\u003e\n\u003ctd\u003e 221\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .600\u003c\/td\u003e\n\u003ctd\u003e380\u003c\/td\u003e\n\u003ctd\u003e 230\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .650\u003c\/td\u003e\n\u003ctd\u003e383\u003c\/td\u003e\n\u003ctd\u003e 235\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e .700\u003c\/td\u003e\n\u003ctd\u003e388\u003c\/td\u003e\n\u003ctd\u003e 240\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e **Valve spring lift ratings are based on using titanium intake valves.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"MailOrder Tuner","offers":[{"title":"Hollow-Stem 2.205\" Intake\/Stainless Exhaust \/ No Valve Spring Kit Installed","offer_id":31898000621667,"sku":"#199-PRCLS76B265-SB-1","price":3935.99,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.205\" Intake\/Stainless Exhaust \/ TSP .660\" Dual Spring Kit w\/ PAC Valve Springs \u0026 Titanium Retainers","offer_id":31898000654435,"sku":"#199-PRCLS76B265-SB-2","price":2974.99,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.205\" Intake\/Stainless Exhaust \/ TSP .700\" Dual Spring Kit w\/ PAC 1207X Valve Springs \u0026 Titanium Retainers","offer_id":31898000687203,"sku":"#199-PRCLS76B265-SB-3","price":3034.99,"currency_code":"USD","in_stock":true},{"title":"Hollow-Stem 2.205\" Intake\/Stainless Exhaust \/ TSP .750\" Dual Spring Kit w\/ PAC 1209X Valve Springs \u0026 Titanium Retainers","offer_id":31898000719971,"sku":"#199-PRCLS76B265-SB-4","price":3034.99,"currency_code":"USD","in_stock":true},{"title":"2.205\"\/1.59\" Titanium Intake\/Stainless Exhaust \/ No Valve Spring Kit Installed","offer_id":31898000752739,"sku":"#199-PRCLS76B265-SB-5","price":3274.99,"currency_code":"USD","in_stock":true},{"title":"2.205\"\/1.59\" Titanium Intake\/Stainless Exhaust \/ TSP .660\" Dual Spring Kit w\/ PAC Valve Springs \u0026 Titanium Retainers","offer_id":31898000785507,"sku":"#199-PRCLS76B265-SB-6","price":3474.99,"currency_code":"USD","in_stock":true},{"title":"2.205\"\/1.59\" Titanium Intake\/Stainless Exhaust \/ TSP .700\" Dual Spring Kit w\/ PAC 1207X Valve Springs \u0026 Titanium Retainers","offer_id":31898000818275,"sku":"#199-PRCLS76B265-SB-7","price":3534.99,"currency_code":"USD","in_stock":true},{"title":"2.205\"\/1.59\" Titanium Intake\/Stainless Exhaust \/ TSP .750\" Dual Spring Kit w\/ PAC 1209X Valve Springs \u0026 Titanium Retainers","offer_id":31898000851043,"sku":"#199-PRCLS76B265-SB-8","price":3534.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0253\/3097\/4819\/products\/3948.png?v=1613333788"},{"product_id":"gm-lsx-center-bolt-valve-cover-gasket","title":"GM LSX Center-bolt Valve Cover Gasket","description":"\u003cspan\u003eGM LSX center-bolt valve cover gaskets. Works in 1999+ GM valve covers!\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eGASKETS ARE SOLD INDIVIDUALLY!\u003c\/span\u003e","brand":"MailOrder Tuner","offers":[{"title":"Default Title","offer_id":32165606424675,"sku":"28-12637683","price":16.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0253\/3097\/4819\/products\/226.png?v=1613334935"},{"product_id":"mangum-racing-brodix-267cc-ls3-cylinder-heads","title":"Mangum Racing Brodix 267cc LS3 Cylinder Heads","description":"\u003ch2\u003eMangum Racing Brodix 267cc LS3 Cylinder Heads\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eMangum Racing CNC Ported Brodix 15° LS3 Cylinder Heads\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBuilt from Brodix 6-bolt LS3 castings with extra deck thickness, our Mangum Racing 15° LS3 heads are designed for serious naturally aspirated and boosted combinations that demand airflow, strength, and repeatability.\u003c\/p\u003e\n\u003cp\u003eEach set is fully CNC ported in-house with brand new Centroid 5-axis CNC mills and Newen seat \u0026amp; guide machines. Every set of cylinder heads is hand blended and carefully inspected before final assembly to ensure dimensional accuracy and consistency.\u003c\/p\u003e\n\u003ch3\u003eAirflow Performance\u003c\/h3\u003e\n\u003cp\u003e(4.125” Bore Plate)\u003c\/p\u003e\n\u003cp\u003eIntake (Radius Entry)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e.200” – 148 CFM\u003c\/li\u003e\n\u003cli\u003e.300” – 227 CFM\u003c\/li\u003e\n\u003cli\u003e.400” – 282 CFM\u003c\/li\u003e\n\u003cli\u003e.500” – 325 CFM\u003c\/li\u003e\n\u003cli\u003e.600” – 350 CFM\u003c\/li\u003e\n\u003cli\u003e.700” – 363 CFM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eExhaust (No Pipe)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e.200” – 114 CFM\u003c\/li\u003e\n\u003cli\u003e.300” – 164 CFM\u003c\/li\u003e\n\u003cli\u003e.400” – 200 CFM\u003c\/li\u003e\n\u003cli\u003e.500” – 233 CFM\u003c\/li\u003e\n\u003cli\u003e.600” – 240 CFM\u003c\/li\u003e\n\u003cli\u003e.700” – 243 CFM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith a 267cc CNC intake runner and optimized 96cc exhaust port, these heads deliver strong mid-lift numbers with excellent high-lift stability — making them ideal for aggressive hydraulic roller street \u0026amp; race builds needing to retain the stock valve locations \u0026amp; angles.\u003c\/p\u003e\n\u003ch3\u003ePremium Hardware \u0026amp; Construction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-bolt Brodix LS3 casting with increased deck thickness\u003c\/li\u003e\n\u003cli\u003e15° valve angle, OEM LS3 valve spacing\u003c\/li\u003e\n\u003cli\u003e2.165” hollow stem stainless intake valves\u003c\/li\u003e\n\u003cli\u003e1.600” hollow stem stainless exhaust valves\u003c\/li\u003e\n\u003cli\u003eBronze guides\u003c\/li\u003e\n\u003cli\u003ePAC .660” dual spring package\u003c\/li\u003e\n\u003cli\u003eTitanium retainers\u003c\/li\u003e\n\u003cli\u003eViton seals\u003c\/li\u003e\n\u003cli\u003e1.250” steel spring seats\u003c\/li\u003e\n\u003cli\u003e68.5cc CNC chambers (milling available at no charge)\u003c\/li\u003e\n\u003cli\u003eChamber softening options for 4.000”, 4.065”, and 4.125” bore sizes\u003c\/li\u003e\n\u003cli\u003e.006” per cc flat milling available\u003c\/li\u003e\n\u003cli\u003eMinimum bore: 4.000”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesigned for Builders Who Care About the Details\u003c\/h3\u003e\n\u003cp\u003eThese are not mass-produced heads. Each set is machined, assembled, hand blended, and inspected in small batches to maintain strict quality control and dimensional consistency.\u003c\/p\u003e\n\u003cp\u003eExtra deck thickness adds durability for higher cylinder pressure combinations. The PAC .660” dual spring setup provides valvetrain stability for serious cam profiles. Stock pushrod length works in most applications but should always be verified based on camshaft and final milling.\u003c\/p\u003e\n\u003cp\u003eIf you’re building a combination needing to stay stock valve angles \u0026amp; locations then this cylinder head is hard to beat!\u003c\/p\u003e","brand":"MailOrder Tuner","offers":[{"title":"Default Title","offer_id":51841270219053,"sku":"MR-BR267LS3","price":2699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0253\/3097\/4819\/files\/MR-BR267LS3.webp?v=1771882660"},{"product_id":"mangum-racing-275cc-11-degree-ls3-cylinder-heads","title":"Mangum Racing 275cc 11 degree LS3 Cylinder Heads","description":"\u003ch2\u003eMangum Racing 275cc 11° LS3 Cylinder Heads\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eMangum Racing CNC Ported MR275 11° LS3 Cylinder Heads\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBuilt from the Mangum Racing 6-bolt 11° LS3 casting featuring a massive .750” deck surface, the MR275 is designed for maximum-effort naturally aspirated and boosted LS combinations where airflow, strength, and valvetrain stability are non-negotiable.\u003c\/p\u003e\n\u003cp\u003eThis casting was engineered for builders who want every available advantage — valve angle, deck thickness, port efficiency, and piston-to-valve clearance — all optimized to support serious compression and high cylinder pressure environments.\u003c\/p\u003e\n\u003cp\u003eEach set is fully CNC machined in-house on brand new Centroid 5-axis machining centers and finished on Newen seat \u0026amp; guide equipment. Every head is hand blended, inspected, and assembled in small batches to ensure repeatability and precision.\u003c\/p\u003e\n\u003ch3\u003eAirflow Performance\u003c\/h3\u003e\n\u003cp\u003eTested on a SuperFlow bench with a 4.125” bore plate\u003c\/p\u003e\n\u003cp\u003eIntake (Radius Entry)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e.200” – 143 CFM\u003c\/li\u003e\n\u003cli\u003e.300” – 221 CFM\u003c\/li\u003e\n\u003cli\u003e.400” – 283 CFM\u003c\/li\u003e\n\u003cli\u003e.500” – 330 CFM\u003c\/li\u003e\n\u003cli\u003e.600” – 358 CFM\u003c\/li\u003e\n\u003cli\u003e.700” – 381 CFM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eExhaust (No Pipe)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e.200” – 112 CFM\u003c\/li\u003e\n\u003cli\u003e.300” – 161 CFM\u003c\/li\u003e\n\u003cli\u003e.400” – 202 CFM\u003c\/li\u003e\n\u003cli\u003e.500” – 232 CFM\u003c\/li\u003e\n\u003cli\u003e.600” – 242 CFM\u003c\/li\u003e\n\u003cli\u003e.700” – 248 CFM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith a 275cc CNC intake runner and optimized 98cc exhaust port, the MR275 delivers exceptional mid-lift efficiency with dominant high-lift airflow. The 11° valve angle significantly improves piston-to-valve clearance, allowing aggressive cam timing and higher compression strategies without compromise.\u003c\/p\u003e\n\u003ch3\u003ePremium Hardware \u0026amp; Construction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-bolt Mangum Racing 11° LS3 casting with .750” deck thickness\u003c\/li\u003e\n\u003cli\u003eOptimized 11° valve angle and revised valve locations\u003c\/li\u003e\n\u003cli\u003e2.185” hollow stem stainless extended-length intake valves\u003c\/li\u003e\n\u003cli\u003e1.600” stainless extended-length exhaust valves\u003c\/li\u003e\n\u003cli\u003eBronze guides\u003c\/li\u003e\n\u003cli\u003eChoice of PAC 1207X, 1208X, or 1209X dual spring packages\u003c\/li\u003e\n\u003cli\u003eTitanium retainers\u003c\/li\u003e\n\u003cli\u003eViton seals\u003c\/li\u003e\n\u003cli\u003e1.250” steel spring seats\u003c\/li\u003e\n\u003cli\u003e70.5cc fully CNC chambers (milling available at no charge)\u003c\/li\u003e\n\u003cli\u003eChamber softening options for 4.000”, 4.065”, and 4.125” bore sizes\u003c\/li\u003e\n\u003cli\u003eFlat milling at .006” per cc\u003c\/li\u003e\n\u003cli\u003eSubstantial piston-to-valve clearance for advanced camshaft profiles and compression increases\u003c\/li\u003e\n\u003cli\u003eMinimum bore: 4.000”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuilt for Maximum Effort Combinations\u003c\/h3\u003e\n\u003cp\u003eThe increased deck thickness supports extreme cylinder pressure in large displacement and boosted applications. The revised 11° valve angle enhances airflow efficiency while providing additional mechanical clearance — a critical advantage in high-rpm, high-lift camshaft programs, or builds where smaller combustion chambers are required.\u003c\/p\u003e\n\u003cp\u003eThese heads have supported combinations exceeding 2,000 horsepower and 200+ mph in competition environments, making the MR275 a proven solution for serious LS3-based builds.\u003c\/p\u003e\n\u003cp\u003eIf you are building a no-compromise LS3 combination — naturally aspirated or power-adder — the MR275 was designed for exactly that purpose.\u003c\/p\u003e","brand":"MailOrder Tuner","offers":[{"title":"Default Title","offer_id":51841274904877,"sku":"MR-27511DLS3","price":3099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0253\/3097\/4819\/files\/MR-27511DLS3.webp?v=1771882840"}],"url":"https:\/\/mailordertuner.com\/collections\/gen-5-camaro-heads\/mangum-racing.oembed","provider":"MailOrder Tuner","version":"1.0","type":"link"}