{"title":"CNC Ported","description":null,"products":[{"product_id":"prc-ls7-cylinder-heads-265cc-cnc-ported-small-bore","title":"PRC LS7 Cylinder Heads | 265cc | CNC Ported | Small Bore","description":"Texas Speed \u0026amp; Performance have been at the forefront of LSX Performance from Day One!\u003cbr\u003e\nResponsible for setting \u0026amp; breaking almost every record, a major key to their success has been the R\u0026amp;D that goes into the Texas Speed Cylinder Head range known as PRC.\u003cbr\u003e\nThe Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications \u0026amp; all made, machined \u0026amp; ported in-house in USA.\u003cbr\u003e\r\n\u003cbr\u003e\r\n Your New PRC CNC Ported 6 Bolt Cylinder Heads Include\u003cbr\u003e\r\n- 100% USA Made 6 Bolt LSX LS7 Port Castings;\u003cbr\u003e\r\n- 66cc Combustion Chamber options;\u003cbr\u003e\r\n- 265cc Intake Runners;\u003cbr\u003e\r\n- Built In Rocker Pedestals (No Rocker Stands Required);\u003cbr\u003e\r\n- PAC .660\" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available;\u003cbr\u003e\r\n- 12 Degree Valve Angle;\u003cbr\u003e\r\n- 2.205\" Stainless Steel Intake Valves (Optional Upgrades Available);\u003cbr\u003e\r\n- 1.610\" Stainless Steel Exhaust Valves;\u003cbr\u003e\r\n- CHE Bronze Valve Guides;\u003cbr\u003e\r\n\u003cbr\u003e\r\n PRC CNC Porting Process\u003cbr\u003e\r\n- CNC machining of your cylinder heads intake runner;\u003cbr\u003e\r\n- CNC machining of your cylinder heads exhaust port;\u003cbr\u003e\r\n- CNC machining \u0026amp; porting of the combustion chamber to specified CC;\u003cbr\u003e\r\n- 5 Axis CNC cutting of your cylinder heads valve seats;\u003cbr\u003e\r\n- CNC cut valve spring seats;\u003cbr\u003e\r\n- Machine the deck face to increase compression;\u003cbr\u003e\r\n- Suited to 4.00\" Inch \u0026amp; Larger Bore;\u003cbr\u003e\r\n\u003cbr\u003e\r\n How Do They Work?\u003cbr\u003e\r\n**Valve spring lift ratings are based on using titanium intake valves.\u003cbr\u003e\r\n   PRC 265cc LS7 Intake   PRC LS7 Exhaust\u003cbr\u003e\r\n.200   169   118\u003cbr\u003e\r\n.300   246   176\u003cbr\u003e\r\n.400   304   208\u003cbr\u003e\r\n.500   348   221\u003cbr\u003e\r\n.600   380   230\u003cbr\u003e\r\n.650   383   235\u003cbr\u003e\r\n.700   388   240\u003cbr\u003e\r\n\u003cbr\u003e\r\n What Is The Process To Order Your New Cylinder Heads?\u003cbr\u003e\r\nWe aim to keep most products in stock however certain items may require manufacturing. We recommend confirming whether these are in stock or if there is a current eta.\u003cbr\u003e\n1. If the cylinder heads are In Stock. Once payment has been completed on your order this will ship out within 24 hours.\u003cbr\u003e\n2. If the cylinder heads need to be ordered in, we will confirm the ETA prior to order. You will simply be required to place a deposit with the balance due upon arrival to us prior to shipping out.\u003cbr\u003e\nThe ETA provided will factor in variables such as manufacturers stock or manufacturing lead times, shipping eta's etc.\u003cbr\u003e\nWe recommend always confirming this prior to order.","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":42287236579433,"sku":null,"price":6590.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4631\/8441\/files\/1236__11684.1591942019.png?v=1747205231"},{"product_id":"prc-ls7-cylinder-heads-265cc-cnc-ported","title":"PRC LS7 Cylinder Heads | 265cc | CNC Ported","description":"Texas Speed \u0026amp; Performance have been at the forefront of LSX Performance from Day One!\u003cbr\u003e\nResponsible for setting \u0026amp; breaking almost every record, a major key to their success has been the R\u0026amp;D that goes into the Texas Speed Cylinder Head range known as PRC.\u003cbr\u003e\nThe Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications \u0026amp; all made, machined \u0026amp; ported in-house in USA.\u003cbr\u003e\r\n\u003cbr\u003e\r\n Your New PRC CNC Ported 6 Bolt Cylinder Heads Include\u003cbr\u003e\r\n- 100% USA Made 6 Bolt LSX LS7 Port Castings;\u003cbr\u003e\r\n- 66cc Combustion Chamber options;\u003cbr\u003e\r\n- 265cc Intake Runners;\u003cbr\u003e\r\n- Built In Rocker Pedestals (No Rocker Stands Required);\u003cbr\u003e\r\n- PAC .660\" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available;\u003cbr\u003e\r\n- 12 Degree Valve Angle;\u003cbr\u003e\r\n- 2.205\" Stainless Steel Intake Valves (Optional Upgrades Available);\u003cbr\u003e\r\n- 1.610\" Stainless Steel Exhaust Valves;\u003cbr\u003e\r\n- CHE Bronze Valve Guides;\u003cbr\u003e\r\n\u003cbr\u003e\r\n PRC CNC Porting Process\u003cbr\u003e\r\n- CNC machining of your cylinder heads intake runner;\u003cbr\u003e\r\n- CNC machining of your cylinder heads exhaust port;\u003cbr\u003e\r\n- CNC machining \u0026amp; porting of the combustion chamber to specified CC;\u003cbr\u003e\r\n- 5 Axis CNC cutting of your cylinder heads valve seats;\u003cbr\u003e\r\n- CNC cut valve spring seats;\u003cbr\u003e\r\n- Machine the deck face to increase compression;\u003cbr\u003e\r\n\u003cbr\u003e\r\n How Do They Work?\u003cbr\u003e\r\n**Valve spring lift ratings are based on using titanium intake valves.\u003cbr\u003e\r\n   LS7 Intake   LS7 Exhaust   PRC 265cc LS7 Intake   PRC LS7 Exhaust\u003cbr\u003e\r\n.200   161   114   169   119\u003cbr\u003e\r\n.300   227   171   248   179\u003cbr\u003e\r\n.400   291   193   308   211\u003cbr\u003e\r\n.500   330   203   351   224\u003cbr\u003e\r\n.600   351   209   383   235\u003cbr\u003e\r\n.650   353   204   388   241\u003cbr\u003e\r\n.700   353   209   393   246\u003cbr\u003e\r\n            \u003cbr\u003e\r\n            \u003cbr\u003e\r\n\u003cbr\u003e\r\n What Is The Process To Order Your New Cylinder Heads?\u003cbr\u003e\r\nWe aim to keep most products in stock however certain items may require manufacturing. We recommend confirming whether these are in stock or if there is a current eta.\u003cbr\u003e\n1. If the cylinder heads are In Stock. Once payment has been completed on your order this will ship out within 24 hours.\u003cbr\u003e\n2. If the cylinder heads need to be ordered in, we will confirm the ETA prior to order. You will simply be required to place a deposit with the balance due upon arrival to us prior to shipping out.\u003cbr\u003e\nThe ETA provided will factor in variables such as manufacturers stock or manufacturing lead times, shipping eta's etc.\u003cbr\u003e\nWe recommend always confirming this prior to order.","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":42287244542057,"sku":null,"price":6590.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4631\/8441\/files\/1236__11476.1591941649.png?v=1747205547"},{"product_id":"prc-ls7-cylinder-heads-285cc-cnc-ported-400-cfm","title":"PRC LS7 Cylinder Heads | 285cc | CNC Ported | 400+CFM","description":"Texas Speed \u0026amp; Performance have been at the forefront of LSX Performance from Day One!\u003cbr\u003e\nResponsible for setting \u0026amp; breaking almost every record, a major key to their success has been the R\u0026amp;D that goes into the Texas Speed Cylinder Head range known as PRC.\u003cbr\u003e\nThe Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications \u0026amp; all made, machined \u0026amp; ported in-house in USA.\u003cbr\u003e\r\n\u003cbr\u003e\r\n Your New PRC CNC Ported 6 Bolt Cylinder Heads Include\u003cbr\u003e\r\n- 100% USA Made 6 Bolt LSX LS7 Port Castings;\u003cbr\u003e\r\n- 70\/68\/64cc Combustion Chamber options;\u003cbr\u003e\r\n- 285cc Intake Runners;\u003cbr\u003e\r\n- Built In Rocker Pedestals (No Rocker Stands Required);\u003cbr\u003e\r\n- PAC .660\" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available;\u003cbr\u003e\r\n- 12 Degree Valve Angle;\u003cbr\u003e\r\n- 2.245\" Stainless Steel Intake Valves (Optional Upgrades Available);\u003cbr\u003e\r\n- 1.610\" Stainless Steel Exhaust Valves;\u003cbr\u003e\r\n- CHE Bronze Valve Guides;\u003cbr\u003e\r\n\u003cbr\u003e\r\n PRC CNC Porting Process\u003cbr\u003e\r\n- CNC machining of your cylinder heads intake runner;\u003cbr\u003e\r\n- CNC machining of your cylinder heads exhaust port;\u003cbr\u003e\r\n- CNC machining \u0026amp; porting of the combustion chamber to specified CC;\u003cbr\u003e\r\n- 5 Axis CNC cutting of your cylinder heads valve seats;\u003cbr\u003e\r\n- CNC cut valve spring seats;\u003cbr\u003e\r\n- Machine the deck face to increase compression;\u003cbr\u003e\r\n\u003cbr\u003e\r\n How Do They Work?\u003cbr\u003e\r\n**Valve spring lift ratings are based on using titanium intake valves.\u003cbr\u003e\r\n   LS7Intake   LS7 Exhaust   PRC 285ccLS7 Intake   PRC LS7 Exhaust\u003cbr\u003e\r\n.200   161   114   169   119\u003cbr\u003e\r\n.300   227   171   248   179\u003cbr\u003e\r\n.400   291   193   311   211\u003cbr\u003e\r\n.500   330   203   353   224\u003cbr\u003e\r\n.600   351   209   386   235\u003cbr\u003e\r\n.650   353   204   393   241\u003cbr\u003e\r\n.700   353   209   407   246\u003cbr\u003e\r\n\u003cbr\u003e\r\n What Is The Process To Order Your New Cylinder Heads?\u003cbr\u003e\r\nWe aim to keep most products in stock however certain items may require manufacturing. We recommend confirming whether these are in stock or if there is a current eta.\u003cbr\u003e\n1. If the cylinder heads are In Stock. Once payment has been completed on your order this will ship out within 24 hours.\u003cbr\u003e\n2. If the cylinder heads need to be ordered in, we will confirm the ETA prior to order. You will simply be required to place a deposit with the balance due upon arrival to us prior to shipping out.\u003cbr\u003e\nThe ETA provided will factor in variables such as manufacturers stock or manufacturing lead times, shipping eta's etc.\u003cbr\u003e\nWe recommend always confirming this prior to order.","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":42287249293417,"sku":null,"price":6590.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4631\/8441\/files\/1236__14060.1591942179.png?v=1747205787"},{"product_id":"prc-ls3-cylinder-heads-255cc-cnc-ported","title":"PRC LS3 Cylinder Heads | 255cc | CNC Ported","description":"Texas Speed \u0026amp; Performance have been at the forefront of LSX Performance from Day One!\u003cbr\u003e\nResponsible for setting \u0026amp; breaking almost every record, a major key to their success has been the R\u0026amp;D that goes into the Texas Speed Cylinder Head range known as PRC.\u003cbr\u003e\nThe Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications \u0026amp; all made, machined \u0026amp; ported in-house in USA.\u003cbr\u003e\r\n\u003cbr\u003e\r\n Your New PRC CNC Ported 6 Bolt Cylinder Heads Include\u003cbr\u003e\r\n- 100% USA Made 6 Bolt LSX LS3 Port Castings;\u003cbr\u003e\r\n- 60-68cc Combustion Chamber options;\u003cbr\u003e\r\n- 255cc Intake Runners;\u003cbr\u003e\r\n- Built In Rocker Pedestals (No Rocker Stands Required);\u003cbr\u003e\r\n- PAC .660\" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available;\u003cbr\u003e\r\n- 12 Degree Valve Angle;\u003cbr\u003e\r\n- 2.170\" Stainless Steel Intake Valves (Optional Upgrades Available);\u003cbr\u003e\r\n- 1.600\" Stainless Steel Exhaust Valves;\u003cbr\u003e\r\n- CHE Bronze Valve Guides;\u003cbr\u003e\r\n- Available To Be Machined To 65cc Chamber While Retaining PTV Clearance;\u003cbr\u003e\r\n\u003cbr\u003e\r\n PRC CNC Porting Process\u003cbr\u003e\r\n- CNC machining of your cylinder heads intake runner;\u003cbr\u003e\r\n- CNC machining of your cylinder heads exhaust port;\u003cbr\u003e\r\n- CNC machining \u0026amp; porting of the combustion chamber to specified CC;\u003cbr\u003e\r\n- 5 Axis CNC cutting of your cylinder heads valve seats;\u003cbr\u003e\r\n- CNC cut valve spring seats;\u003cbr\u003e\r\n- Machine the deck face to increase compression;","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":42287252242537,"sku":null,"price":5500.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4631\/8441\/files\/1236__58143.1591942397.png?v=1747205934"},{"product_id":"cnc-ported-gm-ls3-port-cylinder-heads-12675871-cnc","title":"CNC Ported | GM LS3 Port Cylinder Heads | 12675871-CNC","description":"When it comes to LS Performance, Who knows the industry better than GM Performance.\u003cbr\u003e\nWe have now paired he most tried and tested production cylinder head on the market with the race winning experience of our industry leading CNC Cylinder Head machining team.\u003cbr\u003e\nIt's no secret that CNC Porting the GM LS3 Cylinder Head is the best way to maximize efficiency \u0026amp; flow from your cylinder head. By combining our CNC Ported LS3 heads with the right camshaft \u0026amp; engine engine combination you have a recipe for success.\u003cbr\u003e\r\n\u003cbr\u003e\r\n What Is Included with Our CNC LS3 Heads?\u003cbr\u003e\r\n- Genuine GM LS3 Cylinder Head Castings;\u003cbr\u003e\r\n- 2.165\" Hollow Stem Intake Valves;\u003cbr\u003e\r\n- 1.590\" Stainless Steel Exhaust Valves;\u003cbr\u003e\r\n- CNC Ported Intake Runners;\u003cbr\u003e\r\n- CNC Ported Exhaust Ports;\u003cbr\u003e\r\n- CNC Machined Deck Surfaces;\u003cbr\u003e\r\n\u003cbr\u003e\r\n Want Our CNC LS3 Heads with a Dual Spring Kit?\u003cbr\u003e\r\n- PAC 1905 .660\" Dual Valve Springs;\u003cbr\u003e\r\n- Chromoly Retainers;\u003cbr\u003e\r\n- PAC Valve Locks;\u003cbr\u003e\r\n- Valve Stem Seals;\u003cbr\u003e\r\n- Locators;\u003cbr\u003e\r\n\u003cbr\u003e\r\n Want To Do A Changeover On Your Existing Heads?\u003cbr\u003e\r\nSure, we now offer a changeover program where you can send back your original heads \u0026amp; receive a cash back on them upon receiving them.\u003cbr\u003e\nNOTE: We do not accept aftermarket, damaged or cracked castings.\u003cbr\u003e\r\n\u003cbr\u003e\r\n Prefer To Chat With Us About Your Cylinder Head Upgrade?\u003cbr\u003e\r\nSure! Give us a call on\u003cbr\u003e\n(03)8595 4343\u003cbr\u003e\nOR Simply click\u003cbr\u003e\nGet In Touch\u003cbr\u003e\n\u0026amp; schedule a time that best suits you. We will have one of our sales consultants contact you at your convenience.\u003cbr\u003e\nAlternatively, We are available for Live Chat right now!\u003cbr\u003e\r\n\u003cbr\u003e\r\n Buy NOW!\u003cbr\u003e\r\nShop with confidence with free freight Australia wide \u0026amp; discounted pricing.","brand":"GM Performance","offers":[{"title":"Default Title","offer_id":42287264989289,"sku":null,"price":3790.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4631\/8441\/files\/20221104_170409__99638.1690330884.jpg?v=1747206476"},{"product_id":"prc-ls1-2-cylinder-heads-227cc-cnc-ported","title":"PRC LS1\/2 Cylinder Heads | 227cc | CNC Ported","description":"Texas Speed \u0026amp; Performance have been at the forefront of LSX Performance from Day One!\u003cbr\u003e\nResponsible for setting \u0026amp; breaking almost every record, a major key to their success has been the R\u0026amp;D that goes into the Texas Speed Cylinder Head range known as PRC.\u003cbr\u003e\nThe Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications \u0026amp; all made, machined \u0026amp; ported in-house in USA.\u003cbr\u003e\r\n\u003cbr\u003e\r\n Your New PRC CNC Ported Cylinder Heads Include\u003cbr\u003e\r\n- 100% USA Made 6 Bolt LSX Cathedral Port Castings;\u003cbr\u003e\r\n- 62cc Combustion Chamber options;\u003cbr\u003e\r\n- 220cc Intake Runners;\u003cbr\u003e\r\n- Built In Rocker Pedestals (No Rocker Stands Required);\u003cbr\u003e\r\n- PAC .660\" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available;\u003cbr\u003e\r\n- 12 Degree Valve Angle;\u003cbr\u003e\r\n- 2.065\" Stainless Steel Intake Valves (Optional Upgrades Available);\u003cbr\u003e\r\n- 1.600\" Stainless Steel Exhaust Valves;\u003cbr\u003e\r\n- CHE Bronze Valve Guides;\u003cbr\u003e\r\n\u003cbr\u003e\r\n PRC CNC Porting Process\u003cbr\u003e\r\n- CNC machining of your cylinder heads intake runner;\u003cbr\u003e\r\n- CNC machining of your cylinder heads exhaust port;\u003cbr\u003e\r\n- CNC machining \u0026amp; porting of the combustion chamber to specified CC;\u003cbr\u003e\r\n- 5 Axis CNC cutting of your cylinder heads valve seats;\u003cbr\u003e\r\n- CNC cut valve spring seats;\u003cbr\u003e\r\n- Machine the deck face to increase compression;\u003cbr\u003e\r\n- Designed for 3.9\"-4.0\" Bore;","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":42287291596905,"sku":null,"price":4999.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4631\/8441\/files\/prccath__38106.1642732340.png?v=1747206691"},{"product_id":"afr-mongoose-ls1-2-port-cylinder-heads-215cc-cnc-ported","title":"AFR Mongoose LS1\/2 Port Cylinder Heads | 215cc | CNC Ported","description":"AFR Mongoose 215cc Rectangle Port Cylinder Heads\u003cbr\u003e\r\nAFR's 215cc LS Cathedral Port “Mongoose” heads feature 100% CNC ported intake, exhaust and chambers.\u003cbr\u003e\nFeaturing A356 aluminum castings, titanium retainers and the highest quality components, throughout.\u003cbr\u003e\nThey're designed for applications up to 408 CI, operating up to 7000 RPM\u003cbr\u003e\r\n\u003cbr\u003e\r\n Features Of Your New AFR Mongoose 215cc Cylinder heads\u003cbr\u003e\r\n- 15 degree valve angles;\u003cbr\u003e\r\n- 65cc Chamber;\u003cbr\u003e\r\n- Cast from A356 Aluminium;\u003cbr\u003e\r\n- Accepts factory Rockers (Note requires AFR Stands);\u003cbr\u003e\r\n- CNC ported combustion chambers;\u003cbr\u003e\r\n- Port to valve seat blending (Bowl blending);\u003cbr\u003e\r\n\u003cbr\u003e\r\n Flow Rating CFM Results\u003cbr\u003e\r\n215cc Street Head Flow Chart\u003cbr\u003e\r\n   .200   .300   .400   .500   .550   .600   \u003cbr\u003e\r\nInt   149   215   259   293   300   303   \u003cbr\u003e\r\nExh   111   150   209   225   230   233   \u003cbr\u003e\r\n\u003cbr\u003e\r\n Your New AFR Cylinder Heads Package Includes\u003cbr\u003e\r\n- AFR 215cc Mongoose Rectangle Port Cylinder Heads (Pair);\u003cbr\u003e\r\n- 4 bolt cylinder heads;\u003cbr\u003e\r\n- Complete 5-Axis CNC port \u0026amp; polish program;\u003cbr\u003e\r\n- 8mm Bead Lock Intake Valve, 2.020\" x 4.900\" Overall Valve Length;\u003cbr\u003e\r\n- 8mm Bead Lock Exhaust Valve, 1.600\" x 4.900\" Overall Valve Length;\u003cbr\u003e\r\n- 8 mm Bronze Valve Guides .502\" O.D x 2.100\" O.A.L;\u003cbr\u003e\r\n- PAC Racing Spring 1.290\" OD Hydraulic Roller Dual Valve Spring, 140 lbs. on seat, Max RPM 6300-6500;\u003cbr\u003e\r\n- 7° Titanium Retainers 1.245\" O.D x .885\" I.D x .655\" I.D;\u003cbr\u003e\r\n- 7° Bead Lock Valve Keepers;\u003cbr\u003e\r\n- Viton Valve Seals .600\" O.D x .495\" I.D;\u003cbr\u003e\r\n- Assembled;","brand":"AFR","offers":[{"title":"Default Title","offer_id":42287314632809,"sku":null,"price":5850.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4631\/8441\/files\/LSCylinderHead-large-435--v__52005.1710893148.png?v=1747206764"},{"product_id":"prc-ls3-cylinder-heads-260cc-cnc-ported-380-cfm","title":"PRC LS3 Cylinder Heads | 260cc | CNC Ported | 380+CFM","description":"Texas Speed \u0026amp; Performance have been at the forefront of LSX Performance from Day One!\u003cbr\u003e\nResponsible for setting \u0026amp; breaking almost every record, a major key to their success has been the R\u0026amp;D that goes into the Texas Speed Cylinder Head range known as PRC.\u003cbr\u003e\nThe Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications \u0026amp; all made, machined \u0026amp; ported in-house in USA.\u003cbr\u003e\r\n\u003cbr\u003e\r\n Your New PRC CNC Ported 6 Bolt Cylinder Heads Include\u003cbr\u003e\r\n- 100% USA Made 6 Bolt LSX LS3 Port Castings;\u003cbr\u003e\r\n- 60-68cc Combustion Chamber options;\u003cbr\u003e\r\n- 255cc Intake Runners;\u003cbr\u003e\r\n- Built In Rocker Pedestals (No Rocker Stands Required);\u003cbr\u003e\r\n- PAC .660\" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available;\u003cbr\u003e\r\n- 12 Degree Valve Angle;\u003cbr\u003e\r\n- 2.170\" Stainless Steel Intake Valves (Optional Upgrades Available);\u003cbr\u003e\r\n- 1.600\" Stainless Steel Exhaust Valves;\u003cbr\u003e\r\n- CHE Bronze Valve Guides;\u003cbr\u003e\r\n- Available To Be Machined To 65cc Chamber While Retaining PTV Clearance;\u003cbr\u003e\r\n\u003cbr\u003e\r\n PRC CNC Porting Process\u003cbr\u003e\r\n- CNC machining of your cylinder heads intake runner;\u003cbr\u003e\r\n- CNC machining of your cylinder heads exhaust port;\u003cbr\u003e\r\n- CNC machining \u0026amp; porting of the combustion chamber to specified CC;\u003cbr\u003e\r\n- 5 Axis CNC cutting of your cylinder heads valve seats;\u003cbr\u003e\r\n- CNC cut valve spring seats;\u003cbr\u003e\r\n- Machine the deck face to increase compression;","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":42287317942377,"sku":null,"price":5500.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4631\/8441\/files\/1236__27743.1591942627.png?v=1747206887"},{"product_id":"prc-ls1-2-cylinder-heads-220cc-cnc-ported","title":"PRC LS1\/2 Cylinder Heads | 220cc | CNC Ported","description":"Texas Speed \u0026amp; Performance have been at the forefront of LSX Performance from Day One!\u003cbr\u003e\nResponsible for setting \u0026amp; breaking almost every record, a major key to their success has been the R\u0026amp;D that goes into the Texas Speed Cylinder Head range known as PRC.\u003cbr\u003e\nThe Precision Race Components range offers a large selection of high performance cylinder heads to suit all performance applications \u0026amp; all made, machined \u0026amp; ported in-house in USA.\u003cbr\u003e\r\n\u003cbr\u003e\r\n Your New PRC CNC Ported Cylinder Heads Include\u003cbr\u003e\r\n- 100% USA Made 6 Bolt LS Cathedral Port Castings;\u003cbr\u003e\r\n- 64cc Combustion Chamber options;\u003cbr\u003e\r\n- 220cc Intake Runners;\u003cbr\u003e\r\n- Built In Rocker Pedestals (No Rocker Stands Required);\u003cbr\u003e\r\n- PAC .660\" Dual Valve Springs Incl Titanium Retainers *Optional upgrade available;\u003cbr\u003e\r\n- 12 Degree Valve Angle;\u003cbr\u003e\r\n- 2.045\" Stainless Steel Intake Valves (Optional Upgrades Available);\u003cbr\u003e\r\n- 1.600\" Stainless Steel Exhaust Valves;\u003cbr\u003e\r\n- CHE Bronze Valve Guides;\u003cbr\u003e\r\n\u003cbr\u003e\r\n PRC CNC Porting Process\u003cbr\u003e\r\n- CNC machining of your cylinder heads intake runner;\u003cbr\u003e\r\n- CNC machining of your cylinder heads exhaust port;\u003cbr\u003e\r\n- CNC machining \u0026amp; porting of the combustion chamber to specified CC;\u003cbr\u003e\r\n- 5 Axis CNC cutting of your cylinder heads valve seats;\u003cbr\u003e\r\n- CNC cut valve spring seats;\u003cbr\u003e\r\n- Machine the deck face to increase compression;","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":42287318106217,"sku":null,"price":4999.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/4631\/8441\/files\/1236__33242.1591944082.png?v=1747206895"}],"url":"https:\/\/raceworld.store\/collections\/cnc-ported.oembed","provider":"Raceworld-AU","version":"1.0","type":"link"}