Guys,

I have a Gen 1 350 that came out of an old box truck. I put an aftermarket spin-on filter adapter on it. As I was priming the oil system, oil started dumping out from where the screw-on filter meets the lip of the adapter. It's almost as if oil is getting into the filter then has no where to go but out between the adapter and the filter. It's not a "single drip" scenario. It's coming out like a waterfall covering 2/3 of the circumference of the filter.

This is my first Chevy build and I expected some problems but nothing like this. Perpendicular to the oil filter are 2 holes with screw in plugs that I sealed up. I assumed these were for a remote cooler but may have something to do with creating my problem. All the build books I have don't really talk about these holes. Any ideas on what I did wrong ?? Any and all advice is welcome.