Hello all, I am out of ideas and looking for help!

I pulled the 6.0 out of my 2003 truck to swap cams/valve springs. Re-installed engine and cannot get any spark. So far I have changed Cam Positioning Sensor, Crank Positioning Sensor, double checked all connections and ground wires....no luck. I hooked up my tuner and have no DTCs showing up.

Any ideas??

 

Checked fuses?

 

Missing/damaged ground wires at the back of the heads?

 

Since you pulled the motor out sounds like a wiring problem somewhere when you put everything back. Make sure you check all your grounds and double check all you wiring.