[Excaliber]

I understand the original frames were subject to "sag". Over what period of time and the specifics I don't know!

As far as racing goes it wouldn't be a stretch to assume that "over time" the 289 FIA cars (for instance) did indeed require some "frame work" of some kind.

The 427 frame was bigger. For what purpose? More rigidity because there was more weight on the car? More "torsional" stress with the big block? Or to overcome the inherent "sag" problem? Maybe all of the above, I don't know.

The statement made here about FFR frames being stronger than original to me is like....."So what else is new". Stronger than say an ERA, SPF, Classic Roadster, SAI or Kirkham car? I doubt that. Most likely ALL the re-creations have stronger frames than the "originals" had. Which is NOT to say the "originals" were weak, but could have been better.

Ernie