INDUSTRIAL INJECTION PDM-LB7SH GM REMANUFACTURED STOCK HEADS FOR 01-04 LB7 DURAMAX

The Industrial Injection LB7 Duramax Stock Remanufactured Heads are designed to be a 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
• 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.

The INDUSTRIAL INJECTION PDM-LB7SH GM Remanufactured Stock Heads are expertly crafted to serve as factory replacements for the LB7 Duramax engines manufactured between 2001 and 2004. These high-quality remanufactured heads come fully assembled and ready to bolt on, offering a seamless integration into your engine.

Begin your installation with the confidence that these heads have undergone an extensive cleaning and inspection process. Initially, they are jet washed in a high-pressure spray cabinet, ensuring the removal of all oil and dirt, followed by glass bead blasting to eliminate carbon deposits. Each head is meticulously checked through magnafluxing for cast iron and pressure testing, along with a thorough visual inspection to identify any potential defects.

Built for durability, the heads feature new high-strength alloy, heat-treated iron-based valve guides that boast superior wear resistance. The guides are precisely honed using diamond abrasives to ensure consistent sizing and excellent surface finish. This, combined with a specialized spiral groove design for enhanced oil lubrication, results in optimal performance during engine operations.

A multi-angle valve job is performed with precision to maximize airflow efficiency. Premium valve seat inserts, crafted from a nickel-based non-magnetic material, provide exceptional resilience under extreme conditions. The heads are finally surfaced using CBN or diamond tooling for a finish compatible with various head gasket types, ensuring a perfect seal.

Delivered as a pair, these remanufactured heads come pre-assembled with new valve seals and springs, making them an ideal upgrade for your Duramax engine. For core credit eligibility, a reusable pair of cylinder heads must be returned, free from cracks, warping, or excessive wear, guaranteeing that you receive the best value in your replacement parts.