Pistons specs question for 340 build

And that's correct. What's getting lost and dazed and confused is, we're talking about two different things. Piston volume is not the same as chamber/cylinder volume. That's where the problem is.....and it should never have been measured like that. They should have measured pistons in the same manner as chamber and cylinder volume, but somewhere along the way somebody glommed up the works tryin to be "smart".
Agree, which is why i said it was a symantec problem. The terms get confused, and twisted all out of shape.
My bottom line.....? Do good measurements of your engine, and pay attention to how your calculator wants those measurements entered! Good info in, good results. Garbage in, garbage out.