I wanted someone opinion who has a lot more knowledge on these LS motors than me, I got this 5.3 from a buddy of mine said it ran fine when in truck, pulled valve covers and it had a decent amount of sludge and just all around dirty, pulled heads and found it definitely has some wear and not religious oil changes, my question is there a way I can clean this motor up without removing rockers springs, pistons, cam, crank, ETC, or does it look decent enough to just slap it back together and let her ride another day