Originally Posted by NoJunker
I have a 51 GMC that I bought last fall. It has the 87" long bed and 8 lug lock ring rims as well as the 228 engine. . . . In my research, GMC didn't call out a 100 or 150 for these trucks (I think Chevy did, though). . .
Series 100 and 150 were GMC series designations, not Chevrolet truck series designations.

Here is GMC serial number designations information from Rob English.

What is your complete Engine Serial Number?
What is your complete vehicle serial number?

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.