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1999 GM 6.5L V8 – Piston, Connecting Rod and Bearings Clean/Inspect (Piston Inspection) – Piston Measurement

The piston skirts are barrel-shaped. To accurately determine the piston diameter, the piston must be measured at a specific gauge point.

The piston gauge point is 65.33 mm (2.575 in) from the top of the piston.

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