Like the others, I have to say that a 2 vs. 2 Snorlax is not a good choice. Snorlax is much better for 1 vs. 1. So here is a nice 1 vs. 1 moveset. (I'm not too good with EVs but this would be probably what I would use on EVs)
Snorlax@Leftovers/Chesto Berry
-Rest
-Earthquake
-Shadow Ball
-Fire Blast/Ice Beam
But I use a really weird Snorlax, it works though
Snorlax
-Body Slam
-Covet
-Rest
-Shadow Ball
I start each battle using Covet, so I can get Berrys and things like that, then I use Body Slam unless they are Ghost and I'll use Shadow Ball. Rest when HP gets low. I've made a theif team before which got me some really good items :) Snorlax was in it
Snorlax@Leftovers/Chesto Berry
-Rest
-Earthquake
-Shadow Ball
-Fire Blast/Ice Beam
But I use a really weird Snorlax, it works though
Snorlax
-Body Slam
-Covet
-Rest
-Shadow Ball
I start each battle using Covet, so I can get Berrys and things like that, then I use Body Slam unless they are Ghost and I'll use Shadow Ball. Rest when HP gets low. I've made a theif team before which got me some really good items :) Snorlax was in it