Quote:



Over the counter would be stamped S in the model year spot if it were an over the counter long block assembly, S being service replacement ... UNLESS a full engine got pulled for some odd reason.

Short blocks wouldn't get stamped ... I think ... but would have the riveted tag on the side saying what the short assembly build number was for reference.

It is also possible that an engine just didn't get stamped, the lunch or end of shift bell rang and the guy dropped what he was doing and off he went ?

Pretty much an accurate assessment stated above here.
Piece from 4 page paperwork that was supposed to go with every short block with rivetted tag

6949910-warranty4.jpg (48 downloads)