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Who's ignoring the BBF's? Most kits have some sort of FE installed and hundreds and hundreds of original Cobras all have 427's. But, they didn't have anything to do with winning the World Championship of Makes with Cobras, of course.
By the way, Rick, the failure of 427 GT40 engines weren't really the rpm's, since many chevies turned those easy 6500 rpms and more. The rod/crank design was at fault and still is. The big rod end and journal diameter is too large, causing surface to surface speeds to exceed the sheer strength of the oils available at the time.
How about this for a polite opinion:
The 1966 MKII 427 engines at Le Mans had Chrysler Rod Bearings, cut down cranks and used Chrysler Rods, a hot rod modification from the drag racers which allowed the engines to last the 24 hour race. Of course, this is only my opinion, based on inside dope from a FORD ex-ex.
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