Water in oil after rebuild - looking for guidance

Hi all, hoping to get some help on solving the internal coolant leak I have on my magnum rebuild.

Junkyard 360, refurbished stock heads, thinner head gaskets, new timing chain cover, RPM Air Gap intake, holley carb.

Have 12* initial, motor starts and runs well. BUT, oil turned milky within the first 90 seconds of running. Have flushed it twice with cheap 10-30 running just enough each time to see cleaner oil come through the rockers.

Really surprised at only the 12 ft lbs of torque on the edlebrock intake. I'm hoping I'm only looking at intake or timing cover.
Any thoughts on diagnosing the issue before I start pulling things apart?