I have an 82 corvette that ran fine but I wanted to upgrade the chip in the ecm. Put a hypertec chip in it. The car ran at a high idle with that in it. changed the hypertec chip out and reinstalled the original chip in ti. ran fine. Put the hypertec chip in it had high idle  again . put original chip in again cant get the car to run.  Removed the aircleaner . Poured small amt of fuel it throttle body. Car turned over. I think the fuel pump is shot . Any help appreciated.

Going to need more info...it does crank over?, does have spark?

BTW real close to you is Dave Wright. He just went through some fuel pump problems on his cross fire.

With the multiple times of removing/installing the Prom(chip), it's possible one(or more) of the pins got bent. I would first double-check the prom installation.
The Hypertech prom would prolly need some time to re-adjust the idle speed, but it won't be able to relearn until the engine is at operating temp, and the ECM goes into "closed loop", usually about 5 minutes or more, at idle. Then you would need to drive it some.

You may want to try the original chip again to see if that remedies the situation.  Do you get any spray at all from the injectors , even for a second or two when you try to crank?  You should be able to hear the fuel pump buzzz in the tank when you turn the key "ON" it will pressurize the system and then quit.  If you dont hear it buzz when the key is turned on then either the pump is history or its not getting power.  The fuel pump relay is in the same area of the ECM, you may have disturbed the connector to it while changing the chip.  Make sure all connections are tight.  The fuses for the ECM and he fuel pump are in the fuse panel under the dash near the top right corner (where they are easy to get to )  Both are 10 amp.   You can check the wiring going to the fuel pump by removing the rubber bib around the gas tank filler neck, there are two wires that connect to a round plastic button, one is the feed from the fuel level sender and the other is the power going to the fuel pump, sorry , I cant tell you which is which, you may want to check voltage on these.  As Joel mentioned above the EMC will have to relearn after the battery has been disconnected. You will have to drive for several miles for the computer to relearn. Crossfire19822010-01-01 06:06:41

There is no spray. will crank over.  Will check the pins on the prom & Does try to start when a small amt of gas is poured into throttlebody.

Did see a little smoke comming from area of starter. will probably have to replace starter relay or starter soon too.     LOL

I'm with Joel.  Check the pins and contacts on the chip.   This is the most likely.  If you don't see a problem there, check all the wires in the area that could be moved, tugged, etc.  You may have pulled something else loose.

I would also check the pins and contacts. That is the most likely problem.

Another tip on the fuel pump swap - check the rubber hose connecting the pump to the metal fuel line.  If it shows any signs of wear replace it with the proper grade of rubber.

Did you identify the problem?  Did any of the above information help?