Just finished swapping out motor and trans in my 98. 5.2l and 44re. Put in remanufactured ones. Got everything transferred over and everything is hooked-up. filled with fluids. tried to start, but just cranks. Pulled #1 plug it was getting fuel (as where all) grounded plug and was getting blue spark. all plugs are gapped correct. checked timing it is good as well. still cranks but will not fire. does not even sputter or backfire, just cranks and cranks. what is going on??

 

Sure your on compression stroke, index the distributor? https://dodgeforum.com/forum/1st-gen...er-please.html

Check fuel pressure at the rail as well.

Possible crank sensor???