I double check the grounds and they are all good. The car cranks but there is no fire. I pulled the plug wire out and put a spark plug in it and there was no fire when I cranked it over.
the tach does not move when I crank the motor.
I did a t400 swap and put a new motor in. any ideas

 

The spark plug won't fire unless it is grounded to the block. Check the Crank sensor.