I don't know about gobs of torque. The site said it made 325hp and 190tq or something close to that. Kinda little torque for such big Hp. Ain't it?
small torque * high rpm = big power.
There have been a few engines made like this I remember one built with the original 1000cc Yamaha 5 valver. They are designed for lightweight race cars, over here they are usually used in hillclimbers. The light weight means that they don't need much torque. As an aside theres a guy lives not far from me who has built V engines out of bike engines as a hobby for a few years. Started with a 50cc Honda engine that became a 100cc v twin, then did a 750cc Kawasaki as a V8 then did a 1300 Kawasaki as a 2.6L V12