[Excaliber]

The GT-40's didn't run Webers at Le Mans. If I recall correctly Shelby even tried dual fours in search of more h.p. before settling on a single four.

For a road racing application the Webers would be superior not so much for max power as for "fuel slosh" control under high G level forces (braking, accelleration, cornering). As well as better throttle response at the low to mid rpm range, where the typical rpm's would be during a road race.

Le Man's was more about the ultimate top speed on the long straight, interesting that a single four was chosen in that application.