Crank Marking Question - "Mann Eng"?

[Divenut]

Hey Folks,

Replacing the rear main seal on my 340. While under the car I noticed a stamp on the front of crank. The motor was worked on by one of the prior owners so I don't know the history of the build. Wondering if anyone has any info on the following markings, i.e. "MANN ENG" in the triangle, the 234 5, the "010" s etc. As always your input is appreciated!
Thanks,
Pat,

 

[nm9stheham]

The 010 and 010 probably means the the crank and rod journals have both been turned .010" under size.

 

[JBurch]

I'll go out on a limb..........."Mann Eng" is the shop that turned the crank .010 mains and .010 rods, the "3245" was the job number.

 

[fratzog lover]

Rebuild.

 

[Divenut]

Thanks for the input guys. Much appreciated.

Pat