Small block keeps blowing the oil filter off?

winnipeg dart said

I have seen this happen before, and it was the oil pressure relief valve on the oil pump. it was stuck.

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Yup, you have a stuck preasure relief valve. I lost a brand new 289 33 years ago. My girl friend at the time blew one in the drive way and drove it 15 miles to the 289 death. This is serious, deal with it now.