F56Z=

F = Flint, Michigan truck engine assembly line
56 = 1956 model year
Z = ? type of truck and series designation (maybe someone can help here?)
0110668 - 1000 = 0109668th truck off the Flint engine line that model year

The head casting code and block casting code were used in 1956 (and they were used in other years.

To determine the year of head/block, find and post the following codes:
head date casting code
block date casting code

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.