GMCDumpTruck72,
Your stamped code "V0330TND" is the full "engine ID code".
Did a little web searching and found this resource:
https://media.lmctruck.com/Catalog_Chassis-Eng_IDs/Engine_ID/CD_Engine_ID.pdf (all credit to lmctruck for making this available)

V= Flint MI plant
03= March
30= 30th day
TND = '92 350 originally installed in 2wd/4wd 1/2 and 3/4 ton trucks
You can further confirm by finding block and head casting numbers and checking the web if you need to.