CHEVROLET GMC V8 GENIII AND GENIV ENGINES. 1 - SET (8) ENGINETECH PISTONS FOR CHEVY 4.8 5.3 ENGINES. Most Enginetech pistons are decked 0.010” to 0.020” to compensate for oversized bores and head/deck milling.
Used these in a mild performance 5.3 build that is currently in progress. The machinist said Engine tech wanted pretty tight piston to wall clearances; however, the rings are at the high end of the service manual numbers, I didn’t see any information as to why but, good ring tolerances for boosting or towing applications that see lots of heat. Pistons look sexy. No missing parts.