Here Recently I had the water pump shaft on my Blazer break. This
allowed the fan to bounce around trashing my radiator, Power Steering
Pump & pulley, as well as my Crank Pulley. My upper shourd has a hole in
it, my lower is mostly gone.
This truck is like some F-bodies. It often sits months with out being
started, or if it is, it is not driven or not driven far. Even if your
F-body (or other vehicals) do not have mechanical cooling fans, you can
suffer the same problem. A problem that comes usually from a vehical
sitting. I had the same problem on a 78 Montey Carlo. The car had sat 6
months, then it was brought to me for repair. I got it running after
replacing the distributor wires (mouse damage). Was checking that the
distributor was getting the advance in at the proper RPM with a hand
held tach. At around 3,500 RPM's the shaft snapped. If the hood had been
on, I might not be here today. As it was only minor cuts from the fan
shroud plastic. That fan went up and landed almost 10 feet away!
So now that spring is here, and your ready for some warm weather
crusing in your F-bodies, you might want to spend a few minutes checking
some stuff. Remove your belt(s) (it's probably time to change them
anyways), and check for noise from the water pump shaft barring. Also
feel for bind. If you have a mechanical fan check the clutch hub if so
equipped. Make sure the clutch is not lose on the shaft, if it is it
A few hours worth of inspecting can end up saving you a few large in
parts. Just a new radiator alone is going to set me back $190 (that's a
brand new one with my discount).