I have a 1991 Z28 Camaro with a 5.0 305 engine and it looses water from the radiator every day. What really concers me is that when I use the A/C not only does it over heat but it also leaks inside the car. The passanger side gets flooded with water that smell like the radiator water. Is there any thing that can be done. If there is please help.

 

Sounds like you have a leaking heater core. I would get that replaced and it should solve your problems. Instead of the water flowing through the engine to cool it, it flows into the car and never makes it thru the block, thus the overheating.

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87 IROC 350 TPI with less than 10k original miles
93 Z28 Pace Car #494 of 645
86 Olds 442 (All Original)
My IROC Website
Northstar Camaro Club of Minnesota

 

yeah, it's your heater core. Pretty easy to replace. cheap too if you do it yourself.

 

disconnect it until you can replace it! you probably wont need your heater for a while..

 

definitely your heater core, do it yourself or it will cost you a lot of money...i speak from experience.
--pat