INDUSTRIAL INJECTION PDM-LB7SH-TL GM REMANUFACTURED STOCK HEADS FOR 01-04 LB7 DURAMAX WITH TORQUE LOCK CAPS

The Industrial Injection LB7 Duramax Stock Remanufactured Heads with Torque Lock Cups are designed to be an upgraded factory replacement. 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 magnafluxing, (cast iron only) or pressure testing. They are visually inspected for defects that would make them unusable.

New 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.

Guides 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.

As needed the head receives new Premium valve seat inserts made from a true Nickel Based Non-Magnetic material that was developed for extreme operating conditions.

Next the head is treated to a multi angle valve job to help maximize the flow of air in and out of the head. This is accomplished using a Serdi 100 guide and seat machine. Serdi uses a solid carbide straight shank pilot.

When inserted into the valve guide, it simulates the real valve stem during the centering process.

This guarantees the valve seat is finished for a perfect valve to seat match.

Using CBN or Diamond tooling the head is given a new surface. With our Berco milling machine we can control the surface finish to accommodate different head gasket types. For example MLS head gaskets require a very smooth surface finish.

Finally the head is jet washed dried and assembled with new valve seals and new valve springs.

Features:

• Direct Replacement
• Diamond Honed Guides
• Unshrouded Valves
• High Strength Alloy, Heat Treated iron based valve guides
• Premium valve seat inserts made from a true Nickel Based Non-Magnetic material
• Multi angle valve job
• New valve springs
• Torque Lock Cups Installed
• Sold in a pair

Note: To receive full core credit we need a good, reusable pair of cylinder heads. No cracks, warping, or excessive wear.

The INDUSTRIAL INJECTION PDM-LB7SH-TL GM Remanufactured Stock Heads for the 01-04 LB7 Duramax are engineered to deliver exceptional performance enhancements as an upgraded factory replacement. Built with ambition for both power and durability, these heads are ready to install straight out of the box.

Each head undergoes meticulous preparation to ensure peak performance. Initially, they are jet washed in a high-pressure spray cabinet to eliminate any oil and dirt, followed by a glass bead blasting to eradicate carbon buildup. A comprehensive inspection process, including magnafluxing and pressure testing, is then conducted to identify any defects, ensuring only the highest quality remains.

At the core of this product is the advanced high-strength alloy, heat-treated iron-based valve guides. These guides are treated to a Rockwell 22 scale hardness, resulting in unparalleled wear resistance compared to the original bronze materials. Ingeniously designed with spiral grooves, they facilitate superior lubrication of the valves, enhancing engine longevity.

Precision is paramount; thus, the guides are diamond honed to size, providing impeccable consistency in surface finish and geometry. Upgraded premium valve seat inserts made from a nickel-based non-magnetic material handle extreme operating conditions with ease.

Further optimizations include a multi-angle valve job performed using a Serdi 100 guide and seat machine, which guarantees a flawless valve-to-seat fit. Enhanced airflow efficiency is achieved through meticulous engineering, including diamond tooling for a precise new surface finish tailored to various head gasket types.

Finally, the heads are assembled with new valve seals and valve springs, culminating in unrivaled reliability and performance. Sold in pairs, these cylinder heads not only promise easy installation but also ensure your Duramax functions at its best, ready for any challenge on the road.