I started my Vicky this morning and while it was warming up for about 15 minutes the oil pressure gauge suddenly dropped to zero from about 50lbs. I immediately shut it down.

Any ideas? Gauge/sender malfunction? Oil pump? ....????

Engine is a crate 350 Chev with aluminum heads, newly installed Comp cam and roller rockers, nothing radical in the build. I've put about 200mi on the car since the cam was installed. It hasn't been driven since Thanksgiving and was started once about 3 weeks ago and at that time I ran it for about 30 minutes.

I do not know where to start since I'm not even a good engine diagnostician???

HELP!