I am new to running top fuel, but here is my take. The clutch is basically dead until engine start up. When I was first getting set up in the car, I remarked "the clutch linkage seems broken" Terry smiled and said "it will wake up during start" It sure did!!! The centrifugal force from the weights pushed the pedal right up against my my foot. The pressure wasn't heavy, very similar to an aftermarket single disc in any regular performance car.