{"product_id":"industrial-injection-pdm-lb7rh-2001-2004-lb7-duramax-ported-polished-cylinder-heads","title":"Industrial Injection PDM-LB7RH - 2001-2004 LB7 Duramax Ported \u0026 Polished Cylinder Heads","description":"\u003cp\u003e\u003cem\u003e2001-2004 LB7 Duramax Ported \u0026amp; Polished Cylinder Heads\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe Industrial Injection LB7 Duramax Ported \u0026amp; Polished Cylinder Heads are designed for the racer \/ sled puller in mind. Fully CNC ported heads with screw in torque lock injector cups complete ready to bolt on.Heads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon. Next they are checked by magna fluxing, (cast iron only) or pressure testing. They are visually inspected for defects that would make them unusable. Valve guides and seats are removed as needed for porting.Port development is accomplished using a Superflow 600 flow bench with a computer recording all flow measurements.Many things are considered when designing a cylinder head Port\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5 Axis CNC Cylinder Head Porting Machine with CAD\/CAM software specifically designed for cylinder head porting\u003c\/li\u003e\n\u003cli\u003eScrew in injector torque lock cups\u003c\/li\u003e\n\u003cli\u003eDiamond Honed Guides\u003c\/li\u003e\n\u003cli\u003eUnshrouded Valves\u003c\/li\u003e\n\u003cli\u003eHigh Strength Alloy, Heat Treated iron based valve guides\u003c\/li\u003e\n\u003cli\u003ePremium valve seat inserts made from a true Nickel Based Non-Magnetic material\u003c\/li\u003e\n\u003cli\u003emulti angle valve job\u003c\/li\u003e\n\u003cli\u003e130LB valve springs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Industrial Injection","offers":[{"title":"Default Title","offer_id":45446586564652,"sku":"PDM-LB7RH","price":5447.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0687\/6007\/6332\/files\/PDM-LB7RH_6bb18652-2123-4cdc-ac03-90467bd2eb2a.jpg?v=1775864965","url":"https:\/\/carpartglobal.com\/products\/industrial-injection-pdm-lb7rh-2001-2004-lb7-duramax-ported-polished-cylinder-heads","provider":"Car Part Global","version":"1.0","type":"link"}