http://www.youtube.com/watch?v=3YfTtGCsiD8&lr=1#t=8m08s that time code jumps to where it's actually running I didn't watch the fabrication much except where he test runs the block without a head using a battery drill. Have a look if you want a better sense of scale.
fantastic workmanship indeed...here's one for you Bonus... this wee v8 is pretty cool too, actually running spark plugs, and a very lumpy cam by the sounds of it! http://www.youtube.com/watch?v=B9zt3SF_Flc#t=4m40s