Current Lead Times: In Stock Engines Ship Same or Next Day - Out of Stock: 1-3 Weeks on Most Long Block Engines; 3-5 Days on Heads – *call us for more exact lead times for your specific build
Machine work for the 6.6L LB7 Duramax (2001–2004) focuses on precise machining during rebuilds or head gasket repairs. This includes resurfacing cylinder heads to create a flat surface for a good seal. It may also involve pressure testing for cracks, cleaning carbon buildup, and replacing valve guides and seals. Sometimes, it includes valve seat cutting or a full valve job. For the engine block, common work includes honing or boring cylinders, line honing crank journals, and decking the block to restore flatness. Good machine work keeps parts within tight limits, boosts performance, and improves durability, especially for heavy use or performance builds.
