Pursuing higher performance on a given package, a few small block cars were outfitted with Weber 48IDA carburetors. The results were spectacular. Although Webers were originally fitted to the MarkII GT40, they were soon replaced with Holley four-barrels. To our knowledge only one big block car was fitted with Webers (CSX3033) however it was an after production change-over. The car was originally delivered with the dual four barrels.

But legend often overwrites history. The eight direct path throttles smooth the cam overlap dramatically and throttle response is dramatically changed. Torque is improved. The infinitely adjustable system allows the crew to tune for any condition, altitude or air density.