Quote:
Originally Posted by Steve C.
Here, design a crankshaft 
http://www.epi-eng.com/piston_engine...ign_issues.htm
"People think billet is stronger than a forging, but that's not true. Billet got that reputation from back when forged aftermarket cranks weren't readily available, and billet was the only way to go for a performance crank. With a forged crank, the forging process creates an interwoven grain structure."
Crankshaft Tech - Hot Rod Network
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From the link you supplied..... "There is an old argument that a forged crank is superior to a billet crank because of the allegedly uninterrupted grain flow that can be obtained in the forging process. That might be true of some components, but with respect to crankshafts, the argument fails because of the large dislocations in the material that are necessary to move the crankpin and counterweight material from the center of the forging blank to the outer extremes of the part. The resulting grain structure in the typical V8 crank forging exhibits similar fractured grain properties to that of a machined billet. More than one crankshaft manufacturer has told me that there is no way that a forging from the commonly used steel alloy SAE-4340 (AMS-6414) would survive in one of today's Cup engines.