Help with 340 compression + cam change

Just found this from "70aarcuda" on this site back in 2011:
"pistons were changed...compression height changed from 70 340 with a 1.84 to about 72 340 with a 1.74....."
Also I've read several times that the compression height change was 0.100". Anyone know for sure?

mn9stheham, this might be more accurate than what I'd stated above. Does this make more sense, or not much difference?