Working on a 64 Polara with a 383, Torqueflite, factory air, and fan clutch. Fan clutch has no wiggle and turns freely. The fan clutch has been in contact with the radiator core. Currently has about 1/4" gap between the core and clutch. Distance from water pump hub to front edge for fan clutch is 2-3/4". Anybody have and info on either of these measurements, and what they should be. Thanks