TinyJaime,

Wait to hear from others, but it looks to me that you have an "848" 1956 head:

Head: 3836848

E106 - E 10 6 : May 10 1956


Block: 3837004

E1710 - E 17 6 : May 17 1956

0365139 = serial number = 365139-1000 = 364139th vehicle off the assembly line that year

Engine serial number: F56X : 1956 assembly in Flint, MI into a 3100/3200 regular production truck


Thanks for posting the codes.

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.