[olddog]

To the original question, on carb sizes, I was surprised by the answers.

471 cid at 6000 rpm would pull in 818 cfm at 100% volumetric efficiency.

You didn't say how many rpm you planned to turn nor do we know how good the ported heads can flow.

I would have thought the existing carbs might have been enough. Certainly they are marginal, but may give excellent low end and response for the street.

I'm not arguing against the answers from the experts, but thought I might learn a thing or two here. Why so much carb?