What is the differance between the stock 6.0 to the SS 6.0? Besides the 300 to 345 hp.

 

i have a 6.0 in my truck i think i get a lil more than 300hp
but ive never heard of a "ss" 6.0 the only one i can think of is the 6.2 witch comes in the camaro and is supercharged but make 600hp+
maybe your talking about the vortec max witch is no differnt than a regular vortec in my opinion