That appears to be an engine that was originally installed in a car. Here's a snip from the Vehicle Info Kit from 1946 Chevy Passenger Cars. An engine from a 1/2 ton 1946 Chevy truck would have a DBA prefix on the serial number.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
