Hello,
I'm new here and I already check in and said hello. Anyway, I had this engine that someone gave me and I was wondering is it a 5.3 or 4.8 because on the block it says both. I heard that the piston could tell you what it is so here is a pics of the pistons.
Thanks for the help in advance.
http://image75.webshots.com/175/8/85...3BjXjHY_ph.jpg