Most likely it was not a "stock original" 1948 truck/engine with a 235 in a 3100.
(If my truckin' friend cletis was around, he would have argued/stated that the truck was neither original, nor restored to "original". I make this post in memory/honor of Charlie.)

The 235 engine was not a factory option in a 3100 truck in 1948.

http://chevy.oldcarmanualproject.com/chevyresto/4886.htm

Nonetheless, it most likely is a very nicely "restored" truck.


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.