2003 dodge hemi 2500 wont start

I have a 2003 Dodge Ram Hemi 2500 4X4 Quad Cab with 92000 miles on it. I've never had a problem with it until recently. I was driving approx. 50 mph and the engine started shuttering and skipping like it was running out of gas, although i had good gas in it. The more i pressed the gas the more it shuttered. The engine then shut off. It tries to start but won't turn over. Thinking it was a fuel pump, I turned the key to on and heard the fuel pick up. I also tried the self-diagnosis by turning the key to on 3 times but it gave no code. A local mechanic tried to turn the engine by hand but it stops after a quarter of a turn. Does anyone have any ideas? Thanks.