keith blacks in a 340?

The only reason that poeple complain about KB Hypereutetic pistons is they didn't follow the instructions for end gap and break a piston when the ring ends hit or because the instructions say to set them much wider they assume there will be more leak down. Because the ring is closer to the top of the piston it runs hotter which requires more end gap to prevent them from hitting. At temperture the gap is no different than any other piston.

I have 25k miles on the KB107s in my 360 so far.