nastyz28.com along with the partial VIN (14s) above says it is a 350 CID from a 1974 A body (CMR), made 11/02 (1102) at the Flint plant (V)
http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-3.php
Get the casting date off the left rear of the block forward of the bell housing. That will verify the model year.
Feel free to show me where I'm wrong.
You're probably right. Mine was just a semi-educated guess.