Connect a direct-reading pressure gauge to the port where the sending unit goes into the block. That's the only way to confirm you've got oil pressure. Any parts store should have one. A generic aftermarket gauge with all the plumbing necessary to connect it is a lot less costly than a trashed engine due to no oil pressure!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!