What they did next however was set about turning the big lazy lump into a steroid enhanced athlete. For a start, they took the 4.6L V8 and chopped off two cylinders. Then, they took another 4.6L Town Car V8 and did exactly the same. After this, they took a variety of the components from the two decapitated engines, threw them into a V12 block with a the same 90.2mm bore as the old V8. Thanks to a common crank however, the stroke was reduced from 90mm to 77.3mm, resulting in a final displacement for the V12 of 5927cc. And then finally, as a means of garnishing the 12 cylinders with that little extra slice of oomph, they added 4 turbochargers!
via James Victore
The new BMW 8 Series Concept looks like a straight up shark.