[bmalone]

No. its actually the other way around.

Steel crank is more rigid, but that does not necessarily mean better. If you live at 7000 all day maybe a slight advantage. Steel, ostensibly is stronger and can spin higher, but this does not necessarily play out in the real world.

Cast gives a little more. Either one is fine for most applications.

As an example, 427s came w/ steel cranks; other FEs like 428 had cast. I believe all Windsors came w/ cast.