1972 chevy build/?'s

[Wallee]

I just picked up my great uncles 72 chevy c10 lwb after his passing. It was left to me. My uncle bought this truck new in 71. Garage kept and hardly any rust. Runs but could use some tlc. So I'm super happy to have this one owner family heirloom! Now first question, is the stock engine a 350? Small block? I looked tonight but never could find the engine block code as it's covered in grease and it was getting dark.