TFF,
Actually, a 180 degree crank makes two four cylinder engines with even firing pulses on each bank on a V8 rather than the uneven pulses which you get with a typical 90 degree throw crank. The 90 degree placement of the banks means that the cylinder opposite on the same throw will fire 270 crank degrees after that cylinder. A 180 crank would only make an I8 into two four cylinder engines with one cylinder of each firing at the same time.
But my real point was that even firing pulses actually degrades the performance of V8s for some reason. On a V8, you could build a header that would give even firing pulses on a 90 degree crank by having the primaries of the end cylinders of one bank tied to the inner cylinders of the opposite bank. This has been done, but the results were dissapointing, from what I have read.
