I HAVE A 1968 396 325HP ENGINE AND THE ONLY #S ON THE BLOCK PAD ARE T0401IV . ISNT A SERIAL # SUPPOSED TO BE THERE TOO?:beers:

IV is 65, 66, 67 and 68 325HP 396 for Chevrolet passenger car.
Build 4 January.

Probably never had a VIN stamp.

I think the date is April 1, Tonowanda engine Assembly, reference this site for info:

http://www.chevellestuff.com/

Oh Oh - an April Fool's day car! No telling what they put into that one.