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The pistons are from CP, and weigh 547 grams. They have the necessary big-block Chevy pin diameter of .990-inch, and pin length is 2.75-inches.
Setting the Stage

 The pistons are from CP, and weigh 547 grams. They have the necessary big-block Chevy pin diameter of .990-inch, and pin length is 2.75-inches.  View Related Article