What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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Doug118

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Never in my life have I seen a stock vehicle have a piston melted this bad. 2 others had part of the top ring land missing and the other side of the engine had a broken valve spring. This poor engine had a hard life

Before anyone asks, yes I changed the 4 pistons with the block still in the truck
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swathdiver

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