6.2/6.5 Cylinder Block Date Code

[sctrailrider]

Great write up Missy. In regards to the Army rebuild tag however, it specified a Camp Dodge, IOWA overhaul that included 030+ bore over, -010 on the rods and mains. The Serial of 5HUM911 on the tag is also stamped into the top drivers side edge along the intake valley on the block. Pulled the heads yesterday for some valve polishing (it's been sittin awhile) and confirmed the .75mm (030) oversized pistons. This thing is brand new inside, no cylinder ridges and the internals are still covered in gloss black enamel.

The tags are usually in the intake valley and are glued on with a REALLY stout glue. Took a lot to get mine off but it's going to be riveted to the dash instead so it doesn't get lost on the road.

A lot of times, that tag & glue is a heat type glue, it is designed to turn loose and fall off if the motor gets too hot, one way the builder knows if it has been over heated....

[Gunfreak25]

Makes sense! Wow, I did not think of that!