Been doing some updates on my cooling system. Finished everything up and topped off the coolant, took it for a drive. Well, I just found out that I have other cooling issues. Apparently the freeze plugs on the passenger side are leaking. With the system nut under pressure it doesn't seem so bad but put the rad cap on (16psi) and all three leak like a sieve. I haven't checked the driver side yet.

Being a big block Dart the motor will have to come out. What bothers me is that this is a fresh motor, probably no more than 2500 miles driven on it. Guess I won't know the cause of the freeze plug leaks until I get the motor out.