I believe the water pump is going bad in my 49 Cadillac because it is making a tinking sound. I have been told that the motor is a 331. I have tried the local parts stores, and they can't even order me one. Does anyone know where I can pick mine up, or as a last resort, where I can send mine to have it rebuilt? Does anyone know if a pump from some other engine will work? Thanks for any help you can give.