In particular, there's a lot of tension between the cylinder head and the engine block, especially in diesel motors ... hex heads — head studs are long rods with threads on both ends.

On episode 25 of HOT ROD Garage, host Tony Angelo tries something new: a diesel engine swap! Watch him take a 1973 D200 with a badly shaking 400 BB, yank it out, and cram a 1995 Ram 2500 Dodge ...