Still working on my overheating problem,I am going to change both the upper and lower hoses and the water pump. My reasoning is I don't know how old these parts are. I have a flex fan that is still in the box and was wondering if it would matter if I took off the clutch fan ...car dose not  have A/C. So would it matter if I changed the fan?                       Thanks Rick

Your overheating problem could possibly be caused by a bad fan clutch...it does happen.  One way to check it is to let the engine run up to normal temperature than stop the engine.  If the fan keeps on spinning the fan clutch is bad.  A good fan clutch should stop nearly as quick as the engine.  

Im in Agreement with not using a flex fan. Ive seen the damage they can do when they let go. I would hate to see someone near it at that time. The one I know of that came apart was an aluminum blade that went thru the shroud and dented the hood. Probably come thru one of our fiberglass hoods.
Remember that the car used to cool so you know if all your components are working its a proven system. You havent done any engine work that would have changed anything? When does the engine overheat. If you want to try another fan clutch I have the one off the 72 I am not using. You can give it a shot. Also does your shroud have any breaks in it? Have you checked the actual temp? Does it push coolant out the over flow while running or when shut off? Did you try changing the thermostat? Does the lower hose collaspe while driving. Im not that far from you if you need a hand sometime.
Rodney

What kind of shape is the radiator in?

 I changed the clutch on the fan two years ago,when I take the car out it overheats as soon as it starts to get warm.(don't take long).The hose going into the the thermostat housing gets really hot and if you grab it you can feel the pressure on it,the strange thing is the radiator cap is cold and has no pressure on it.I've been told by a couple of people the the bottom hose has clasped or that the impeller on the water pump is bypassing. So not knowing when these three things were last worked on I decided to change them.As for the radiator I will look it over while I have everything apart.Oh I did change the thermostat and it didn't help.  As for the flex fan from your experiences I think I will stay with the factory fan setup.As soon as I find a way to move the car to a place to work on it I will change the parts and post the results.....right now I'm a little gun shy on working on anything in front of my house.

|UPDATED|11/22/2012 7:27:32 PM (AZT)|/UPDATED|

Try removing the T-stat and run it....you could have gotten a bad new one. Hose going into T-stat hot and under pressure sounds like T-stat not opening

There may be another issue namely with your engine, check the water and make sure there is no oil in it and also check the oil on the dipstick, if the oil on the dipstick is creamy coloured, you may have done a head gasket. Advanced timing will also make the engine run at a higher temp, I had the same problem with overheating and found the distributor lock bolt had loosened and the timing advanced on it own enough to cause overheating.

 Well I got the top hose replaced,water pump replaced then the problem  ....I couldn't find the right bottom hose. I found plenty of hoses ,but none had the spring so I called corvette america and order one. Should be here Tuesday. I want to give Rich (Yostusota) a thank you for the phone help today. Well when I'm done everything except the radiator has been changed in the cooling system so I will see if problem solved.                                     Rick

 I think gunslinger hit the nail on the head the spring on the bottom hose was shot,But instead of just doing it I decided to replace everything (no telling how old the hoses were and water pump was original.No water in the oil (thank goodness)

|UPDATED|11/23/2012 6:31:41 PM (AZT)|/UPDATED|