[JC455]

Not to brag, but the mighty 350 2 bbl that came in my 68 LeMans did the exact same thing to it's flexplate. In fact, I've seen a lot of high mileage Ponchos do this, so to answer the question about a stock 326 behind a 455- Yes, it'll work, but eventually won't.
I know this has nothing to do w/ the power that Ford was making, just thought it was funny (and ironic...350 hehehehe).