low oil pressure

so i changed the oil in my stock stroke 360 with x heads using royal purple 5w-30 and a fram oil filter, started it up oil pressure looked good at around 55-60 pounds hopped in drove it around for about half an hour and as the engine got hotter about 185 degrees the oil pressure droped to around 25 psi when at idle but was still at around 55 or 60 when on the throttle, does this sound like a problom?
Author: admin