2.7 no start prob

I have a 2000 intrepid with bad motor(but it ran just not good)I replaced the engine with another 2.7 now it wont start it just cranks but no start.I had a p1391 code and i replaced the crank sensor just incase i might have damaged the old one installing the new engine.But still no start and i have no spark.What am i missing any suggestions.
thanks
don

I have a 2000 intrepid with bad motor(but it ran just not good)I replaced the engine with another 2.7 now it wont start it just cranks but no start.I had a p1391 code and i replaced the crank sensor just incase i might have damaged the old one installing the new engine.But still no start and i have no spark.What am i missing any suggestions.
thanks
don

Have you double checked that all electrical connectors are on tight.?

Did you take coil and such and transfer to new from old or were all compotents on new engine?

Check coil.

Camshaft sensors.

Look at the Factory service Manual posted , that may help you. It is ffor a 2002 but should not be much different.