Need some info here please. My vette was overheating and I changed the oil and water coolant and all that. One day it got really hot and I coasted into the gas station. I shut it off and the next day I got a tow truck to come get it. The next dat I turned it over with no problem at all. It seemed to be alot of back pressure coming back out of the radiator cap when I took it off, and alot of coolant coming out of the coolant resavoir tank in front of the engine. The I was told that it can't be fixed and that I need a new engine. Some white smoke came out a bit from the exaust then stopped and it didn't do it when I started it up again. So I really can't afford to have this child hood friend do this job. He told me it was going to cost a totall of about 8000.00 for it, some friend, mechanic huh. The motor does turn over so that would tell me that it's not siezed correct. Can anyone give me some input

At best it sounds as if you've blown a head gasket. The next step is to pull the heads and see what's wrong. Hopefully a gasket problem will be apparent. But even if it is, have the heads checked for cracks and for being warped. Also have any affected cylinders checked carefully. And of course, we'd assume at this point that the blown gasket is the result of the overheating and not the initial cause. So check the cooling system thoroughly. Sad to say but your friend ain't much of a mechanic if he's going to write off the entire engine before pulling the heads to learn the extent of the problem(s). I'd highly recommend finding someone else to do the work for you if you're unable to do it yourself.

I would start by removing all the plugs. check each for water.

a slight wisp tells me there isn't anything SERIOUS. Also, how did the oil look?

What is the condition of the cooling system?

Bogus is right, pull the plugs. Apparently you're getting coolant in (at least) one cylinder if you've seen white smoke on occasion. But at this point, it doesn't seem to have been enough to cause hydrostatic lock-up. If it had, you'd know it. But from the white smoke and the way you describe that it's pushing coolant out of the expansion tank and even the reservoir, it sounds like a forgone conclusion that compression is leaking past one or more of the fire rings in your head gasket(s) for whatever reason.
BTW, I got your PM and am answering it here. Good luck with this and feel free to let us know if we can be of any further help.

yes, please, feel free to ask... but keep it in the thread. That way others can learn from your experiences!

I agree, check the plugs, but I suspect the gasket is failing, but not yet died. This is called "the perfect situation."

It sucks it has failed, yes, but it sucks more when coolant dumps into the crankcase. Ask me how I know.