Super Efficient Rust Removal Hacks & More! | Awesome

Before and after Removing the grease, rust, and paint off this engine block using a chemical dipping process. Who can tell me what engine block this is? Side note: this is just a before and after video. This block went through three different chemicals to fully strip it down. Step 1 was an alkaline paint remover/degreaser. Once it is removed from each chemical it is pressure washed before it goes onto the next step. Step 2 is an acid bath to remove all the rust. After removing the block from the