good oil pressure "generally" means good rod and main bearings. I would pull head and look for foreign objects and or carbon on top of piston/s. if the piston is hammering an object it will really sound out.

1953 Chevy 3100
261 and SM420
53Chevy 3100
1953 Mack Firetruck
1972 Porsche 911
1986 Honda Goldwing