I hate to admit it, but this happened to me too. I pulled my engine after the first season to "de-tune" the cam and heads. When I put it back in, I was sure I had all the lines to the cooler and remote filter hooked up the same as they had been - NOT! I did lube the engine with a pre-oiler, then fired it up.
As I was trying to "run-in" the new cam, I noticed the
oil press guage didn't have any reading. I told myself it would pop-up, soon. After about two minutes, I decided it just couldn't be right, and shut it off. Re-routed the remote filter lines (back to the way I'd had them before, I guess). I fired it back up, and all was well.
I didn't bother with cutting up filters or any of that (though those are certainly good suggestions). I decided just to "go for broke" - and changed the
oil (no particles) and kept going. Still going strong 4 summers and 4000 miles ( there'd be MORE miles if I could keep a trnny together) later - no noises, pulls to 7000+, and no problems.
hope you are as lucky, too
cobrajeff