You can't replace Salamence with anything. Nothing in OU even comes close to checking/setting up on half the things Mence did, not even Dragonite. Focus on new offensive/defensive strategies that'll work now that Mence got the boot, or find a new all-purpose wallbreaker.
Heracross, for example, is free to do as it pleases now that it's #1 check is gone. Between SD, CB, Guts, and its incredible bulk, there really isn't much stall teams can do to stop it. All it takes is a strong blow or two to bring offensive/balanced teams to their knees, and it can basically come in on most walls for free and break them outright.