The ’61 and ’62 engines used the same suffix and prefix codes as in the ’63 Service Manual page in the attached picture (click here to download a PDF version of the chart).
- for ’61 engine codes started with S001001
- for ’62 engine codes started with S100001
- for ’63 engine codes started with S200001
These codes are on the right head.
As for block ID codes, the only one I am familiar with to be coded different is a Jetfire block code. I do believe all F-85 blocks were the same with the exception of the Jetfire block. Jetfire blocks have a “J” stamped on them.
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Happy Jetfires…Jim Noel