The two 917Ls from the CSGT mods should top out at about 237mph--certainly the 5 liter car will (#25).
FWIW (and it was a point debated back and forth within the CSGT mod team), the car should probably have reached 245mph just before the kink, but a widely read book of fairly recent vintage pegs the speed a bit lower it seems, so that's the number that was used.
I do know Vic Elford claimed 245mph at night in the wet (!), but only after several hours of driving let him build up the nerve to try the kink flat out (1970). The the "actual" top speed he reached was derived, I believe, directly through Helmut Bott's slide rule.
I do have the idea 245mph Porsche measured was also confirmed (by timing) in 1970 at the Mulsanne kink speed trap, but I can no longer point at a source for this.
One year later, Jackie Oliver reached 246.XXXmph (measured at that speed trap) driving a further developed 917L. The car by then was stable enough that he said he could drive it through the kink absolutely flat out without lifting at all, and with just one hand on the wheel.
Olivers 246mph was reported as a "Guiness World Record" for quite a few years afterward (in the Guiness books).
Having said that ^ I suspect an "Auto-Union" monster-car mod from the 30's should properly reach speeds of 270mph or more . Might need a longer, "Autobahn" type straight to let it all out though....
Last edited by Christopher Snow; 6 September 10 at 00:34.