My daughter and I are going to get the 57 ready for drag racing and we installed an altenator, and would like to leave the belt drive on while we race/make a pass, and I heard that it can be turned off and on with a switch.. has anyone done this or heard of it being done..

Brother and I own/operate 1957 Ford Fairlane 312/4x2 and two 1963 Falcons 302 rollers carburated 600cfm, FE427 sitting in shed..