Four wheel drive not working properly

I recently replaced the engine in my vehicle listed above. Same exact engine that was removed. The truck had been sitting for about five years. I test drove it and shifting through gears went well in all five gears. When I tried to test the four wheel drive it would not go into 4H but will go into 4L. When I take it out of four wheel drive to 2H, it seems to me as if it is stuck between 4H and 2H. Also, after the first run of about quarter mile, the speedometer stopped working. What might be my problem?