Smallblock Pistons: 1 question.....KB's -or- Sealed Power(SpeedPro hypers)???

mgoblue9798 said
Speed pro pistons are boat anchors. Biggest "problem" with 340 is piston weight. I used the KB flat tops with scat I beam rods and reduced rotating mass by more then 5 lbs.
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What speed pro pistons are boat anchors? Since I thought we were talking about the hypers, I’d disagree.