Jean-Marc,
In your picture of the rear of your engine I noticed that the cam tunnel plug is fitted in a concave position. It should be the other way round for an FE unlike all other Ford V8s. The cam will end will grind against the plug leaving metal fragments in the oil.
Are these the ones just sold on ebay uk? I would be very cautious about using these wheels for anything but static display as mag from the '60s
deteriorates internally.
There are plenty of engine builders who can supply a 427 that is 7K rpm capable with race engine dynamics. The problem you might have is not there, but with the transmission. Check out some of the threads on this subject in the trans section of the forum.
If your case is a good copy of the original with the same ( or better) material properties then you should benefit from all the testing and design that Ford originally put in. I imagine that's the plan.
I would think that the use of the 24 cylinder layout rather than a larger V12 was a matter of cda; retaining as small a frontal area as possible, which is quite important at 400 mph + speeds.
Well they make a lot of cams, but my experience of their 'off the shelf' products has been marred by poor quality control; incorrect heat treatment ( required an engine rebuild) and a cam with some oversized journals . I understand the custom billet stuff is good.
I take it 447 should be 347.
I think these are just an alternative to the Dunlop CR65 L & M crossplies; available in widths 4.5 to 7.00, which is ok for pre '65 FIA racing but not really an alternative to the CR6ZZ.