Yes, FT engine like Bob said. Medium & Heavy duty truck ( like F600 ), buses, etc. The block is worth saving / checking. Some 391 FT blocks from around the 1970-1972 casting period have 428 cylinder cores with thick cylinder walls, most I've checked of other years are just normal 360 / 390 cylinder cores. Be advised that the block may need a bushing to use a FE car / light truck distributor. They also have a tapped hole in the side of the block for an oil return that can be plugged. FT engines use a different heat riser system and different heads, intake manifold and exhaust manifold than a FE. I've never found anyone interested in used FT heads. Some of the distributors have a tach drive take off and may have value. I've seen a few people interested in the rams horn style exhaust manifolds some engines have, but they need welding up the heat riser to be used on a FE head. People used to save the forged cranks, but they need machining to the front and rear to be used in a FE and my understanding it costs more to do than buy a new crank, but there still seems to be interest and if you have a machinist friend that works cheap might be worth perusing. The valve covers may be unique and have some value, or just normal FE covers. I've seen more interest lately in people looking for the various brackets for PS, Alt, air pump etc.
