Advanced Engineering Tech - 5.3l with stock dish pistons

Does anyone know what -CC they are? :confused:

I have done plenty of internet searches and cant seem to find a decent write up on these motors. I have the LM7.

get you a beaker (cc) half full of water and some clay, level the clay out in the dish then remove it and put it in the beaker to see how many CCs the water rises. easy peasy