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So to start this off, we have discussed the possibility of replacing the 6.0 gas engine in my Suburban with a DuramaxTexasRedNeck suggests I start with a LLY cylinder head and injectors grafted onto a vintage LB7 block.The LB7 places its injectors inside the valve cover, while the LLY places them outside in a configuration much more familiar to most D-Max ownersGiven that my truck is a 2002, it would be easiest to just swap in an entire 2002 LB7 and Allison 5 speed drivetrain.So, let me start this off by asking, why is it necessary to swap heads? Why not just work with the LB7 with upgraded and proven parts to achieve a high output LB7?
Here you go!!https://www.drivingline.com/articles/the-1000hp-duraburb-diesel-the-ultimate-duramax-powered-suburban/