Have your oul analyzed! You may have more problems, if not it is cheap insurance.
Check your lifters and cam too. My old 428 had debris in the
oil and filter and it turned out to be catastophic. Three flat lobes on my cam with the bottom worn out of several hydraulic lifters. I hate to be the bearer of bad news but there needs to be a complete examination of your engine. Keith Williams in Dallas had a similar problem with his 428. Don't take anything for granted.
Keep us posted on what you find.
Clois