dodge durango 4.7 4x4 dies when put in drive

Hello, definitely sounds like something is wrong with either the alignment of the engine to the transmission or something to do with the torque converter. That is the variable here -- the replacement of the engine. The folks that replaced the engine should be looking into this for you; this isn't your fault...unless you did the work on your own. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops