Here's what they show in 1959 Trucks
http://chevy.oldcarmanualproject.com/chevyresto/59tsn03.htm

F - Flint
0417 - April 17
JC - 4000 series

To find the year, there's a date casting code on the block.
Same side as your block number.

It's near the CON 1.
Should be something like D 161.

Let us know what you have.


-Tom

1950 Chevy 3100 w/ 1956 235