The details are how you get the most from an engine rebuild! Getting proper head gasket seal depends on a smooth flat surface on both sides, and decking the block is a key part of the equation. This 5.3 LS was distorted pretty dramatically, and this video shows how much variation there can be across the deck. A total of .005" had everything flat and true, and it was on to next step in the Rottler CNC hone. What are you working on? Give us a call at 903-893-8121 or stop by and see us in downtown

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