Absolutely possible with a stuck relief valve (or one shimmed too high). I've had 2 completely different engine shoot past 100 psi cold at start up. One (the Ford) blew out the oil filter gasket, and the other pumped most of the oil into the head (GM 4 banger engine) in a race and left the mains dry and they seized. So I would not downplay too high a pressure; it CAN bite you big time.