'68 Dart with a 318 LA - Build Options
@KCBones
You will have to put an oil pressure gauge on the 318 to see where your oil pressure is running. Good pressure equals good bearing tolerances.
If you can get an eye shot on the cam peaks, that is a good sign to what condition the engine is in. Hopefully they have not degraded.
Can look in through the distributor hole if you are not tearing the engine down. See what the cam wear pattern looks like.