BBC ID numbers

[AML]

Ive got these two sets of numbers on a BBC in front of the passengers side head on the block.
T0412LC F251794
I looked around quite a bit on the net but Im not finding the info I want.
anyone know what Ive got here?

 

[2tons of fun]

what is the casting ### on the back of the block? date code?

 

[dvalentine]

Check here :

http://www.mortec.com/

dv