New Problem..

Ok. Well my learning experience of the 5.0 is getting to be decent but i have a new problem with it. I had the 4.10's and intake gasket fixed today. We plugged everything back in also. I drove my car and once it started heating up it started to buck....like the fuel was cutting. We played with the timing and still bucked. Im confused on what it could be.. I was thinking maybe fuel pump. It doesnt do it all the time...it kinda random unless the car is in the normal range and youre getting on her a little hard. Any help is welcome.


Thanks in Advance

Chris