{"product_id":"power-driven-stage-3-cnc-ported-race-cylinder-head-for-89-98-12v-cummins","title":"Power Driven Stage 3 CNC-Ported Race Cylinder Head for 89-98 12v Cummins","description":"\u003cp\u003e\u003cstrong\u003ePower Driven's 12v Cummins Stage 3 CNC-Ported Race Cylinder Head\u003c\/strong\u003e features a new aftermarket casting that is surfaced to OEM specifications in-house using state-of-the-art equipment to ensure reliable head gasket sealing, then is machined for fire-rings to provide the ultimate seal possible with a fire-ring head gasket. These heads receive\u003ca href=\"https:\/\/powerdriven.com\/collections\/stocked-at-pdd\"\u003e Power Driven's\u003c\/a\u003e Race Port as well as enlarged pushrod holes for better clearance and improved oil drain-back, and threaded freeze plugs for reliable operation at high rpm. \u003cbr\u003e\u003cbr\u003eAfter porting, valve seat work is performed to fit larger aftermarket 1.87\" intake and 1.75\" exhaust valves. In addition, every CNC-ported Power Driven cylinder head is machined for compatibility with our \u003ca href=\"https:\/\/powerdriven.com\/products\/power-driven-doweled-batwing-rocker-pedestals\"\u003eDoweled Batwing Rocker Pedestals\u003c\/a\u003e. Our expert technicians then assembled this head with OEM top-hat-style seals and Power Driven \u003ca href=\"https:\/\/powerdriven.com\/products\/power-driven-12v-race-conical-valve-spring-set\"\u003eRace Conical Valve Springs\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThe Power Driven Diesel Race Port is the most extreme CNC port job that can be achieved with the factory intake shelf intact. It outflows many of the competitor's bolt-on shelf\/runner intake heads, while retaining the reliable factory shelf and water cooling. On our SuperFlow 1020 test bench, this port produced a 68% increase on the intake and a 65% increase on the exhaust. This port flows an incredible 234 CFM on the intake and 232 CFM on the exhaust at 28\".\u003c\/p\u003e\n\u003cp\u003eIn real-world back-to-back dyno testing on a 1,500 hp race truck, the higher flow from this race port showed a 119 hp gain versus the baseline stock head. This head is designed for use with an aftermarket high-lift camshaft and is not intended for street use. While it is possible to run this head on the street, the thin port walls and heavy valve spring pressure are not ideal for longevity in a street application. If you're looking for the ultimate water-cooled head for a dedicated 12v Cummins race engine, this is it!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFire-ringed deck surface\u003c\/li\u003e\n\u003cli\u003eRace port\u003c\/li\u003e\n\u003cli\u003ePushrod clearance\u003c\/li\u003e\n\u003cli\u003eThreaded freeze plugs\u003c\/li\u003e\n\u003cli\u003eTop-hat valve stem seals\u003c\/li\u003e\n\u003cli\u003eOversized 1.87\" intake valves\u003c\/li\u003e\n\u003cli\u003eOversized 1.75\" exhaust valves\u003c\/li\u003e\n\u003cli\u003eRace conical valve springs and retainer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Power Driven CNC Stage 3 Race Port Cylinder Head is compatible with:\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1989 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1990 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1991 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1992 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1993 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1994 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1995 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1996 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1997 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003cli style=\"list-style-type: none;\"\u003e1998 Dodge 5.9L 12v Cummins\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e*May not work for all builds due to other engine\/vehicle modifications\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis product cannot ship to California\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%;\"\u003e\u003ciframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/SlHCqN_gsPo?autoplay=1\u0026amp;mute=1\u0026amp;playsinline=1\u0026amp;rel=0\u0026amp;modestbranding=1\"\u003e\n  \u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Power Driven Diesel","offers":[{"title":"Default Title","offer_id":43586215379018,"sku":"51002023025","price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/3146\/8874\/files\/Power-Driven-Diesel_12V-Cylinder-Head-89-98_01_0525_286c0054-06de-4660-b5e2-6c9e5c9ac05c.jpg?v=1778549188","url":"https:\/\/dieselpartdeals.com\/products\/power-driven-stage-3-cnc-ported-race-cylinder-head-for-89-98-12v-cummins","provider":"Diesel Part Deals","version":"1.0","type":"link"}