TedRamAirII,
When we pulled the motor a month ago, we inspected the oil pump and shaft. The shaft had some witness marks on it. I'm pretty new to working on cars but some of the guys thought we had a smoking gun. We switched out the oil pump and shaft, re-installed the motor and it had the same knock. We did feel around the oil pan and didn't find anything unusual. I have all the confidence that this motor will be a beast when I get it back.
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