i have a 91 z28 with a l98 and for some reason their is tranny fluid leaking under the radiator, any idea what could it be? i checked the little hose coming from the trans to the radiator and it looks fine

 

Leaking transmission cooler line.

 

so it is the cooler line, looks like the little bolt is fine but the other end the one that is attached to the radiator is stripped. can it be recoiled?

 

If it is stripped, you will have to replace the radiator. The heat exchanger(of which the female fittings are part) is installed in the radiator tank before assembly to the core. There is no reliable method for repairing these fittings if they are badly damaged. You may want to check them carefully to be sure they are stripped and not just missing the outer 1 or 2 threads. If only 1 or 2 threads are damaged, You may be able to clean up the threads and get them to work.

One other option is to bypass the liquid to liquid OE cooler and install a liquid to air, aftermarket cooler. Be aware though that liquid to air coolers are not as efficient. Most are made to work with the OE liquid to liquid cooler. Therefore, you will want one with a high GVW rating(8,600lbs perhaps?) to replace the OE cooler.