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  1. Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
    I'm looking at a 2007 3500 CC , dually 4X4, 140,000 miles, excellent shape. Is it just a matter of time before the head gaskets need replaced? Or is that from higher than stock boost? Or new head gasket design cured that? It appears totally stock.
  2. 6.5/6.2 High Performance Engine Modifications
    So I have a 94 K2500 that I am building an engine for. The engine is an early red block 6.2L cast on 3-2-81. The casting number on my heads is 14057299, which based on my research, are cast in 83-84. I noticed after comparing these heads with another set from a military engine, that the heads...
  3. 6.5L Diesel Engine
    Just starting to address the issue as it recently arose. Heavy smoke when at low RPMs or park. I know there is a way to diagnose (check engine light comes on) with putting a paperclip in the wire plug in under steering wheel but I forgot the process. Also my low coolant light just recently come...
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