{"product_id":"gm-ls-aluminum-cylinder-head-259cc-std-head-bolts-assembled-ps8015","title":"Aluminum Assembled Cylinder Head - GM LS Compatible - 259cc","description":"\u003cdiv class=\"product-custom-info\"\u003e\n\u003ch4\u003eOverview:\u003c\/h4\u003e\n\u003cp\u003eGet big power on a small budget with BluePrint Muscle Series LS cylinder heads! These lightweight aluminum heads bolt up to your LS engine and feature 259cc intake\/102cc exhaust runners, 69cc combustion chambers, and 2.165\" intake\/1.600\" exhaust valves. They're fully assembled with valve springs, retainers, locks, guide plates, studs, and seals. Manufacturer part number -PS8015.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum Output for Less Money!\u003c\/li\u003e\n\u003cli\u003eDesigned and Produced by BluePrint Engines\u003c\/li\u003e\n\u003cli\u003eFully Assembled with Heavy Duty Components\u003c\/li\u003e\n\u003cli\u003eBacked by Our Full 12-Month Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eIntake:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eIntake Runner Volume (cc): 259cc\u003c\/li\u003e\n\u003cli\u003eIntake Port Location: Standard\u003c\/li\u003e\n\u003cli\u003eIntake Port Shape: Rectangular\u003c\/li\u003e\n\u003cli\u003eIntake Valves Included: Yes\u003c\/li\u003e\n\u003cli\u003eIntake Valve Diameter (in): 2.165 in.\u003c\/li\u003e\n\u003cli\u003eCNC-Machined Intake Runner: No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eExhaust:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRunner Volume (cc): 102cc\u003c\/li\u003e\n\u003cli\u003eExhaust Valve Diameter (in): 1.600 in.\u003c\/li\u003e\n\u003cli\u003eExhaust Valves Included: Yes\u003c\/li\u003e\n\u003cli\u003eExhaust Runner: No\u003c\/li\u003e\n\u003cli\u003ePort Shape: Round\u003c\/li\u003e\n\u003cli\u003eExhaust Port Location: Standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCombustion Chamber:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCombustion Chamber Volume (cc): 69cc\u003c\/li\u003e\n\u003cli\u003eCNC-Machined Combustion Chamber: No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eValve Specs:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum Valve Lift (in): .650 in.\u003c\/li\u003e\n\u003cli\u003eIntake Valve Angle: 12 Degrees (3 degrees rolled)\u003c\/li\u003e\n\u003cli\u003eExhaust Valve Angle: 12 Degrees (3 degrees rolled)\u003c\/li\u003e\n\u003cli\u003eValve Guides Included: Yes\u003c\/li\u003e\n\u003cli\u003eValve Guide Material: Manganese Bronze\u003c\/li\u003e\n\u003cli\u003eValve Seats Machined: Yes\u003c\/li\u003e\n\u003cli\u003eValve Seat Machine Style: 5-Angle\u003c\/li\u003e\n\u003cli\u003eValve Seat Material: Chrome Nickle\u003c\/li\u003e\n\u003cli\u003eValve Stem Seals Included: Yes\u003c\/li\u003e\n\u003cli\u003eValve Stem Seal Style: Viton® Fluoroelastomer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSprings:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eValve Springs Included: Yes\u003c\/li\u003e\n\u003cli\u003eSpring Pressure Open: 360-380 @ 1.150\u003c\/li\u003e\n\u003cli\u003eSpring Pressure Closed: 125-135 @ 1.800\u003c\/li\u003e\n\u003cli\u003eOutside Diameter of Outer Spring (in): 1.295 in.\u003c\/li\u003e\n\u003cli\u003eDamper Spring Included: Yes\u003c\/li\u003e\n\u003cli\u003eNumber of Springs per Valve: Dual\u003c\/li\u003e\n\u003cli\u003eRetainers Included: Yes\u003c\/li\u003e\n\u003cli\u003eRetainer Material: Chromemoly Steel\u003c\/li\u003e\n\u003cli\u003eLocks Included: Yes\u003c\/li\u003e\n\u003cli\u003eLock Style: 7 Degree\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePushrods:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRocker Stands Included: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRocker Arms:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRocker Arm Studs Included: No\u003c\/li\u003e\n\u003cli\u003eRocker Arms Included: N\/A\u003c\/li\u003e\n\u003cli\u003eRocker Arm Nut Thread Size (in): N\/A\u003c\/li\u003e\n\u003cli\u003eRocker Arm Nuts Included: No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eGuide Plate:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eGuide Plate Included: No\u003c\/li\u003e\n\u003cli\u003eGuide Plate Pushrod Size: N\/A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eMisc:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHead Style: Assembled\u003c\/li\u003e\n\u003cli\u003eCylinder Head Material: Aluminum\u003c\/li\u003e\n\u003cli\u003eCylinder Head Finish: Natural\u003c\/li\u003e\n\u003cli\u003eSpark Plug Style: Standard\u003c\/li\u003e\n\u003cli\u003eCover Mounting Style: Standard\u003c\/li\u003e\n\u003cli\u003eSteam Holes Drilled: No\u003c\/li\u003e\n\u003cli\u003eCamshaft Style: Hydraulic Roller\u003c\/li\u003e\n\u003cli\u003eOiling Style: Through Pushrod\u003c\/li\u003e\n\u003cli\u003eValve Cover Mounting Style: Center Bolt\u003c\/li\u003e\n\u003cli\u003eAccessory Bolt Holes Drilled: Yes\u003c\/li\u003e\n\u003cli\u003eMachined for O-Ring: No\u003c\/li\u003e\n\u003cli\u003eHeat Crossover: No\u003c\/li\u003e\n\u003cli\u003e10mm Accessory Bolt Holes Machined on Ends of Heads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eQty:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSold Individually\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWarranty:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBacked by our full 12-month limited warranty!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-custom-info\"\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-custom-info\"\u003e\n\u003cp style=\"width: 50%; border: 1px; border-style: solid; border-color: #00469B; padding: .5em; text-align: left; line-height: 17px;\"\u003e\u003cimg alt=\"Yellow Exclamation Triangle\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2160\/9839\/files\/Yellow_Exclamation_25px.png?2265725208434072383\"\u003e\u003csmall\u003e\u003cstrong\u003e WARNING:\u003c\/strong\u003e Cancer and Reproductive Harm- \u003cbr\u003e\u003ca href=\"https:\/\/www.P65Warnings.ca.gov\" target=\"_blank\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Blueprint Engines","offers":[{"title":"Default Title","offer_id":50468069310750,"sku":"PS8015","price":1703.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7171\/1262\/files\/PS8015_-_A_be5cc79c-bd99-46f2-97f1-b69b894cd729.jpg?v=1767159257","url":"https:\/\/platinumhpsolutions.myshopify.com\/products\/gm-ls-aluminum-cylinder-head-259cc-std-head-bolts-assembled-ps8015","provider":"Platinum High Performance Solutions, LLC.","version":"1.0","type":"link"}