{"product_id":"trick-flow®-genx®-255-cylinder-heads-for-gm-ls3-tfs-3261t002-c01","title":"Trick Flow GenX 255 Cylinder Head for GM LS3 TFS-3261T002-C01","description":"\u003cdiv class=\"rte\"\u003e\n\u003cp class=\"part-detail-section-header h2\"\u003e\u003cstrong\u003eThis is for ONE cylinder head- if you are looking for a pair please make sure the quantity is 2. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"part-detail-section-header h2\"\u003e \u003c\/p\u003e\n\u003cp class=\"part-detail-section-header h2\"\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003cspan class=\"header-line\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"attribute-container flex-container flex-wrap\"\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eManufacturer's Part Number:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e\n\u003cdiv class=\"beat-a-price-attr\" data-sku=\"TFS-3261T002-C01\"\u003eTFS-3261T002-C01\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003ePart Type:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e\u003ca class=\"color-link\" href=\"https:\/\/www.atechmotorsports.com\/search\/part-type\/cylinder-heads\"\u003eCylinder Heads\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eProduct Line:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e\n\u003ca class=\"color-link\" href=\"https:\/\/www.atechmotorsports.com\/search\/part-type\/cylinder-heads\/product-line\/trick-flow-genx-255-cylinder-heads-for-gm-ls3\"\u003eTrick Flow® GenX® 255 Cylinder Heads for GM LS3\u003c\/a\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCombustion Chamber Volume (cc):\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e69\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eIntake Runner Volume (cc):\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e255cc\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eExhaust Runner Volume (cc):\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e87cc\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCylinder Head Style:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eAssembled\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCylinder Head Material:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eCast aluminum\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCamshaft Style:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eHydraulic roller\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eIntake Port Shape:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eRectangular\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eIntake Valve Diameter (in.):\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e2.165 in.\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCNC-Machined Combustion Chamber:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCNC-Machined Intake Runner:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCNC-Machined Exhaust Runner:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCombustion Chamber Style:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eHeart\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eIntake Port Location:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eStandard\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eExhaust Port Shape:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eOval\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eExhaust Port Location:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eStandard\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eSpark Plug Style:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eAngle\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eIntake Valves Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eExhaust Valves Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eExhaust Valve Diameter (in.):\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e1.600 in.\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eValve Springs Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eMaximum Valve Lift (in.):\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e0.650 in.\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eOutside Diameter of Outer Spring (in.):\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e1.300 in.\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eDamper Spring Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eNumber of Springs Per Valve:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eDual\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eRetainers Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eRetainer Material:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eTitanium\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eLocks Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eLock Style:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e7 degree\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eValve Stem Seals Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eRocker Arm Studs Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eRocker Arms Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eRocker Arm Nuts Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eGuideplates Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eAccessory Bolt Holes Drilled:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eIntake Valve Angle:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e12\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eExhaust Valve Angle:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e12\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eValve Guides Included:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eValve Guide Material:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003ePowdered metal\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eValve Seats Machined:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eValve Seat Machine Style:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e3-angle\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eValve Seat Material:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eDuctile iron\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCylinder Head Color:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNatural\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eSteam Holes Drilled:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eOiling Style:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eThrough pushrod\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eMachined for O-Ring:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eHeat Crossover:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eRemanufactured:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eQuantity:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eSold individually.\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eThese cylinder heads can only be used with a minimum bore diameter of 4.000 in. Includes new rocker arm rail mounts for use with LS3 1.7 ratio rocker arms. OEM rocker arm rail mounts will not work with these heads.\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eCARB EO Number(s):\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003e\n\u003cul class=\"part-detail-attribute-list\"\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca class=\"color-link\" href=\"http:\/\/arb.ca.gov\/msprog\/aftermkt\/devices\/eo\/d-747-1.pdf\" target=\"_blank\"\u003eD-747-1\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-9 large-6\"\u003e\u003cstrong\u003eEmissions:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"small-12 medium-15 large-18\"\u003eCalifornia EO Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"part-detail-description-title\"\u003e\u003cstrong\u003eTrick Flow® GenX® 255 Cylinder Heads for GM LS3\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"part-detail-description\"\u003eTrick Flow engineers used the best features of OEM GM LS3 and LS7 cylinder heads, combined with their own race-winning engineering and technology, to create the GenX® 255—the ultimate ultimate square port LS cylinder head for 4.000\" and larger bore engines. The heads feature fully CNC Competition Ported runners with a premium high resolution surface finish for maximum airflow and performance potential. Stock LS3 ports accommodate LS3-style intake manifolds and LS9\/LSA blower assemblies. The valve angles have been changed from 15° to 12° to increase piston-to-valve clearance and allow the use of larger camshafts. The coolant holes through the head deck were redesigned to work with all LS head gasket and engine block combinations. GenX 255 heads are available with standard or 6-bolt per cylinder mounting patterns.\u003cbr\u003e\u003cbr\u003eTrick Flow GenX 255 cylinder heads are emissions-legal under CARB E.O. #D-747 for 2007-present GM vehicles with 6.2L engines. They are available fully assembled or as bare castings. Sold individually.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Trickflow Specialties","offers":[{"title":"Default Title","offer_id":46456656625863,"sku":"TFS-3261T002-C01","price":1549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/3029\/6263\/files\/Trickflow255.4.jpg?v=1777220894","url":"https:\/\/justifiedproformance.com\/products\/trick-flow%c2%ae-genx%c2%ae-255-cylinder-heads-for-gm-ls3-tfs-3261t002-c01","provider":"Justified PROformance","version":"1.0","type":"link"}