Can anyone give me a step by step procedure for replacing a leaking heater core on a '71 BB Chevelle? I haven't done stuff like this in a long time and I am pretty sure that if I did two of these, the second one would go a whole smoother than the first. So that's what I am looking for, all the gotchas on doing one of these cold. Thanks for all your help guys!

Some good info:

http://www.chevelles.com/forums/showthread.php?t=257973&highlight=heater+core+replacement

Thanks onick, that's exactly what I was looking for!