need help with numbers on big block

[Tommy]

I have no books on this block and would like to know what it came out of. Thanks.
Cast number 3999290
TOI20CTB
12S197623
Dated K 17 71

Tommy /ubbthreads/images/graemlins/3gears.gif

[Mr70]

1972 402/240 HP,2-bolt for Passenger-Chevelle-Camaro-Monte Carlo.
The Letter "S" in the VIN# stands for St.Louis Plant,and they made the Big cars,so it's from a Passenger Car.

[Tommy]

Thank you very much. I knew it was A 402 but didn't know any of the other specs.

Tommy /ubbthreads/images/graemlins/burnout.gif