Welcome to Stovebolt.com, Chris
Engine Serial Number: FBA9xxxx
FBA = 1948 3100 from Flint, MI engine plant
A = January
9xxxx = xxxx-1000 = serial numbers for engines from that engine plant
Vehicle Serial Number: 3FPBxxxx
3 = St Louis, MO vehicle assembly plant
FP = 1948 3100 truck
B - February
xxxx = xxxx-1000 = serial number for all vehicles from that vehicle assembly plant
http://chevy.oldcarmanualproject.com/chevyresto/4858.htm
