Pistons specs question for 340 build

70Hardtop said
I just had a look at the KB pistons site (they are made by UEM) and their protocol is opposite to what people are talking about here and what I thought would be correct. See the three pictures as well as the link below if interested, you can clearly see that the domed pistons are given as a -ve value and the dished and valve relief pistons are +ve value.

KB AUTOMOTIVE - KB Automotive Hyper

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Look at the Wallace link I posted as well. What you say is "standard across the board" is actually "backwards across the board". I don't know at what point in time it came to be used in such a fashion, but it's wrong as wrong can be.

Any "good" grammar school geometry student will tell you the same thing.