any diesel mach. on this board

helping a freind look at a ford dump truck that has a ford motor not sure what size or number but will know more monday.. what is it i should look for with a ford motor as far as being a big problem....i have a cummins in my dump and its a great motor and know alot about it just never did anything with a ford or cat so im loss.. i know the same should apply but thought i would ask before hand thanks mike