I was driving down the road, about 20mph, and the fan blade flew off the waterpump of my of my truck. It is a 1990 Silverado, 4.3 liter V6, with countless miles. It looks as though the spindle coming out of the pump has the fan "compress" on to it. Can I replace the blade, after straightening( it ate the shroud and radiator) or does this need to be done professionally? Any help would be appreciated.

the other Pete

You will never get it right. Go to a junkyard and get a used one or buy a new one. Why take chances?
Homer2

I agree with Homer2.