I got the A/C working in my 71 Polara and it leaks water into the cab? The drain holes are clean, any ideas? Thanks.

Cold water or hot water?

If it's cold water and the condensate drain isn't plugged then you probably have a bunch of ickies built up in the evaporator case. It can prevent condensate from getting out.

One of my techs at work had a plugged condensate line on his VW Caddy diesel. The system filled the A/C box with condensation and froze it. He had a frost line about 4" high on the side of his A/C box.
The evap temp switch is apparently bad on his.

could be a cracked or broken drain pan that is assuming its cold water

The underdash unit is a two piece unit with a gasket seal running around the edge. When the gasket fails, the condensate leaks into the passenger compartment instead of out the drain hole. The gasket can be replaced, but the unit has to come out.

Good Luck,

If you have ATC II and not the manual A/C, coolant is still running through the heater core even if the A/C is on MAX. That's a worst case scenario.

Thanks guys, it is cold water and I looked in the parts manual and I agree, I think the seal is bad between the inner and outer housing. Yeah this will be fun to fix.

Any idea on where to get a new seal or what I can make one out of?

No thanks, I would like to fix it right.