INDUSTRIAL INJECTION PDM-LB7RH GM RACE HEADS FOR 01-04 6.6L DURAMAX

The Industrial Injection LB7 Duramax Race 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 magnafluxing, (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; air flow is only one of the things to think about. Another major concern is port wall thickness.

Anyone can get a head to produce high flow numbers, but if doing so leaves the port wall to thin the casting will crack. High performance Diesel heads are more prone to crack because of the thermal shock experienced by excessive intermittent or long term exhaust temperatures.

The 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.

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 performance valve springs.

Features:

• 5 Axis CNC Cylinder Head Porting Machine with CAD/CAM software specifically designed for cylinder head porting
• Screw in injector torque lock cups
• 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
• Peformance 95LB valve springs
• Sold in a pair

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

Elevate your performance with the INDUSTRIAL INJECTION PDM-LB7RH GM RACE HEADS, meticulously crafted for the 2001-2004 6.6L Duramax. These race heads are engineered specifically for racers and sled pullers, combining innovation and precision to enhance your engine's capabilities.

These fully CNC ported heads offer exceptional airflow and are expertly designed with screw-in torque lock injector cups, ensuring a seamless installation process. Each head undergoes a rigorous cleaning process, including jet washing and glass bead blasting to eliminate all contaminants. Rigorous testing—via magnafluxing and pressure testing—guarantees that only the highest quality heads are utilized, while visual inspections identify any potential defects.

Advanced port development is verified using a Superflow 600 flow bench that meticulously measures airflow, ensuring optimal performance. With an emphasis on port wall thickness, these heads are engineered to withstand the thermal shock of high-performance diesel applications, significantly reducing the risk of cracking.

Utilizing a state-of-the-art 5 Axis CNC Cylinder Head Porting Machine, the precision achieved in porting ensures balanced power distribution across all cylinders, simplifying tuning. High-strength alloy, heat-treated iron valve guides provide exceptional wear resistance, with a unique spiral groove design that enhances lubrication during engine operation.

Each head features premium valve seat inserts made from nickel-based non-magnetic material, ideal for extreme conditions. A multi-angle valve job using Serdi technology ensures a flawless valve seat match, maximizing airflow. Completed with diamond-honed guides, performance 95LB valve springs, and meticulous assembly, these heads promise to elevate your Duramax’s output.

Sold in matched pairs, the INDUSTRIAL INJECTION PDM-LB7RH GM RACE HEADS deliver unparalleled quality, performance, and reliability. To maximize core credit, please return reusable heads, free from cracks and excessive wear. Invest in superior engineering for your engine today.