GM Engine codes?

I just bought a 1966 chevell ss and trying to find out what size engine it has. The Block # reads 3918328 T CM3 Conv2. Need a little help?

Hmmm - nothing coming up on any of the above. Are you getting these numbers from the pad on the passenger side (Engine ID Number/VIN Code)?

Any GM # and # location can be found here.

www.mortec.com