Is there any way to PERMAMENTLY eliminate rear main oil leaks?

Darter6 said
I will tell you that I took apart a 1984 roller cam 318 and it had a rope seal.
Ma Mopar did many things so who knows ?

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The 85 roller I pulled apart also had a rope seal. I first thought it was a regular seal that was so old and hard, until it came out. Never seen a rope seal before. Lol