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 on the 6.6L LML Duramax (2011–2016) includes resurfacing the heads and block. It also involves valve jobs, crack testing, and carbon removal. Performance builds may need cylinder boring, honing, and rotating assembly balancing. Accurate machining helps improve sealing, strength, and power.
