[bobt427]

All truck engines in trucks bigger than a 1 ton would be a FT engine not an FE. FT engine will have 105 cast into the left front corner just like the FE's have 352 cast into them. The only thing usable from an FT is the block and the crank with alot of machine work on the crank and maybe the block as well. 391 FT's crank shafts have bigger front snouts,wider main bearing journals,and thicker rear flywheel flanges.