There's small block, then there's tiny block. Homemade 400cc V8.

https://www.youtube.com/watch?v=IzDKehAHNM4&feature=youtu.be via /r/motorcycles https://www.reddit.com/r/motorcycles/comments/93fsgw/theres_small_block_then_theres_tiny_block/?utm_source=ifttt