do it all again - and make sure everything's done right to avoid the problem again.
First, pull the head and check the block Very carfully for cracks.
Also check how far the cylinder sleeves project above the deck - can't remember the spec, but somebody will have it. That's an important one to avoid the problem you're having - don't ignore it.
have somebody else check the head for flatness. I'd even consider resurfacing it just to be sure it's good.
Then reinstall with a good (new) gasket.
Been a while - but I don't THINK those studs go into the water jacket on that engine... if they DO the threads need to be sealed.
Torque IN THE PROPER ORDER in 5lb increments up to 80ft lbs.
Run for a couple hours and retorque to 80.
You should be fine.