How much rear main seal oil loss is considered normal for our cars?

[dvw]

The 440 that was in my Belvedere had an oil leak that I couldn’t stop. I pulled the motor and replaced it. It was setting on my motor stand and one day I noticed oil on the cam plug. I have a new plug but I siliconed it instead. I’m not sure if it will work but I’ll give it a try.

I fixed mine the same way. Also a few years ago my sons turbo small block leaked out of the bell housing. When the trans was out we aired up the crank case and sprayed the engine with soapy water. The cam plug was actually cracked. My son had bought a box of 10. The remaining 9 plugs were all cracked in the same spot. Leason learned. Do a complete inspection on everything during the build. No matter how minor the part is.
Doug