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05I0868 F54Y stamped on it.
F54Y = the Engine Serial Number
F = Flint, MI engine assembly plant
54 = 1954
Y = car 235 with RPO 313 (Powerglide, 2-speed, automatic car transmission)

http://chevy.oldcarmanualproject.com/chevyresto/5409.htm
http://chevy.oldcarmanualproject.com/chevyresto/5445.htm

The casting number is CON 4 D84
This not the block casting code, it is the block date code:
CON 4 = Conveyor #4 at the engine plant
D = 4 = April
8 = 8th
4 = 1954

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.