Unstoppable Coolant Leak

You need to mill the intake. If you need to you may end up using thicker gaskets or double up on gaskets.

Ive seen more junk, leaky intake manifolds than I care to remember.

I won't put an Edelbrock intake on an engine I haven't surfaced. I won't even bother to check it. It gets cut.

This is what I was thinking too, if Edelbrocks are that bad then a Chinese knock-off can't be any better. Having your intake milled is not very expensive.

The way the heads sat before being .010" higher than they are now may just have sealed the intake enough, now that the heads are straighter and a bit shorter the fit is worse.

Hey at least it's not an internal coolant leak going into your oil...