{"product_id":"industrial-injection-2001-2004-lb7-duramax-ported-polished-cylinder-heads-core-charge-of-350-applies-pdm-lb7rh","title":"Industrial Injection 2001-2004 LB7 Duramax Ported   Polished Cylinder Heads  CORE CHARGE OF 350 APPLIES PDM-LB7RH","description":"\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.\n\nHeads 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.\n\nPort development is accomplished using a Superflow 600 flow bench with a computer recording all flow measurements.\n\nMany things are considered when designing a cylinder head Port\u003c\/p\u003e\u003cp\u003eair flow is only one of the things to think about. Another major concern is port wall thickness.\n\nThe porting is then preformed using a new 5 Axis CNC Cylinder Head Porting Machine with CAD\/CAM software specifically designed for cylinder head porting. CNC porting brings unparalleled accuracy to head porting with each port flowing the same. This helps balance the power that each cylinder produces, making tuning easier.\n\nNew High Strength Alloy, Heat Treated iron based valve guides are installed. These guides are heat treated to Rockwell 22 Scale, which produces the ultimate in wear resistance. This is far superior to original guide material, including Bronze. The guide incorporates a spiral grove inside the guide to hold oil and aid the lubrication of the valve during engine operation.\n\nGuides are then honed (not reamed) to exact size using a diamond honing mandrel. Diamond abrasives allow for consistency of size, surface finish, and bore geometry with no variation from guide to guide. The guide size is then verified using a valve guide bore gauge.\u003c\/p\u003e\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\n\u003cul class=\"productpage_list\"\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\u003cbr\u003e\u003ctable style=\"border-collapse:collapse;width:100%;margin-top:12px;font-size:13px\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;width:160px;background:#f5f5f5\"\u003eAPG Part #\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eIISPDM-LB7RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eMFG Part #\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003ePDM-LB7RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eUPC\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003e840256915457\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eIndustrial Injection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eCategory\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eEngine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eSubcategory\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eCylinder Block Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003e80 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 8px;font-weight:bold;background:#f5f5f5\"\u003eLine Code\u003c\/td\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eIIS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Industrial Injection","offers":[{"title":"Default Title","offer_id":43281893949530,"sku":"IISPDM-LB7RH","price":4595.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/5018\/4538\/files\/PDM-LB7RH.jpg?v=1777282426","url":"https:\/\/garagegeardirect.com\/es\/products\/industrial-injection-2001-2004-lb7-duramax-ported-polished-cylinder-heads-core-charge-of-350-applies-pdm-lb7rh","provider":"Garage Gear Direct","version":"1.0","type":"link"}