{"title":"PRC LS7 Cylinder Heads","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"}],"url":"https:\/\/raceworld.store\/collections\/prc-ls7-cylinder-heads.oembed","provider":"Raceworld-AU","version":"1.0","type":"link"}