I think that only the Canadian GMCs used 216s and 235s. If you have a 228 or 248, your oil pressure gauge will have a full scale of 60 but the 216s would have a full scale of 30. Also, the 228 GMC motors say "GMC" on the valve cover but the 216s do not.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!