hi, welcome to the forums. something had to move, like your radiator support flexed inward, your radiator is not in secure enough, your motor mounts are broke, your fan is damaged,or loose or your water pump( where the fan bolts on) is shot, or some other object went into the fan blade and caused it. i had a 67, same as the 68. if your fan is really close to the radiator and you hit something head on, its possable the engine mounts could have flexed enough with the weight going forward to touch it for a minute. thats about all the ideas i have.

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goina hundred in a 55, and i dont know why..
some things were just meant to be..
05 V6 auto, torch red, basic,:cool: a few mods
06 V6 stick, vista, premium (g/f`s car)